{"id":720,"date":"2022-10-26T10:01:24","date_gmt":"2022-10-26T10:01:24","guid":{"rendered":"https:\/\/owolff.com.linux20.curanetserver.dk\/?page_id=720"},"modified":"2024-10-07T10:32:50","modified_gmt":"2024-10-07T08:32:50","slug":"simulation-in-comsol-multiphysics","status":"publish","type":"page","link":"https:\/\/owolff.com\/en\/application-support\/simulation-in-comsol-multiphysics\/","title":{"rendered":"Simulation in COMSOL Multiphysics"},"content":{"rendered":"\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-lcg9ppdn-4768135e69807f1ca35dc34e559e6a50\">\n.avia-section.av-lcg9ppdn-4768135e69807f1ca35dc34e559e6a50{\nmargin-bottom:0px;\n}\n.avia-section.av-lcg9ppdn-4768135e69807f1ca35dc34e559e6a50 .av-parallax .av-parallax-inner{\nbackground-color:#702423;\nbackground-image:url(https:\/\/owolff.com\/wp-content\/uploads\/2023\/04\/comsol-1-e1682329915230.jpg);\nbackground-repeat:no-repeat;\nbackground-position:50% 50%;\nbackground-attachment:scroll;\n}\n.avia-section.av-lcg9ppdn-4768135e69807f1ca35dc34e559e6a50 .av-section-color-overlay{\nopacity:0.7;\nbackground-color:#702423;\n}\n<\/style>\n<div id='av_section_1'  class='avia-section av-lcg9ppdn-4768135e69807f1ca35dc34e559e6a50 main_color avia-section-default avia-no-border-styling  avia-builder-el-0  el_before_av_submenu  avia-builder-el-first  avia-full-stretch av-parallax-section avia-bg-style-parallax av-section-color-overlay-active av-minimum-height av-minimum-height-custom av-height-custom  container_wrap sidebar_right'  data-section-bg-repeat='stretch' data-av_minimum_height_px='320'><div class='av-parallax' data-avia-parallax-ratio='0.3' ><div class='av-parallax-inner main_color avia-full-stretch'><\/div><\/div><div class=\"av-section-color-overlay-wrap\"><div class=\"av-section-color-overlay\"><\/div><div class='container av-section-cont-open' style='height:320px'><main  role=\"main\" itemprop=\"mainContentOfPage\"  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'  itemprop=\"headline\"  >Simulation in COMSOL Multiphysics<\/h1><div class='av_custom_color av-subheading av-subheading_below'><p>Simulating mechanical, electrical and acoustical properties<\/p>\n<\/div><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><\/div>\n\n<\/div><\/div><\/main><!-- close content main element --><\/div><\/div><\/div><div class='clear'><\/div><div id='sub_menu1'  class='av-submenu-container av-j6wca-d827ec2c86eee5be1276e4835bc1a126 socket_color  avia-builder-el-3  el_after_av_section  el_before_av_section  submenu-style-2 av-sticky-submenu submenu-not-first container_wrap sidebar_right' style='z-index:301' ><div class='container av-menu-mobile-disabled av-submenu-pos-center'><ul id='av-custom-submenu-1' class='av-subnav-menu' role='menu'>\n<li class='menu-item av-1nj1ci-6b3fee00ba60eff95acfc3290da822fd menu-item-top-level menu-item-top-level-1' role='menuitem'><a href='https:\/\/owolff.com\/en\/application-support\/active-noise-cancellation\/'  ><span class='avia-bullet'><\/span><span class='avia-menu-text'>Active Noise Cancellation<\/span><\/a><\/li>\n<li class='menu-item av-1e1ile-3f8ad34e6f847ab109c49ea5fe4a35ff menu-item-top-level menu-item-top-level-2' role='menuitem'><a href='https:\/\/owolff.com\/en\/application-support\/audio-in-smart-glasses\/'  ><span class='avia-bullet'><\/span><span class='avia-menu-text'>Audio in Smart Glasses<\/span><\/a><\/li>\n<li class='menu-item av-18i54i-be1d6a00b83cce88a6a4195ff1ac6752 menu-item-top-level menu-item-top-level-3' role='menuitem'><a href='https:\/\/owolff.com\/en\/application-support\/buzzers-and-piezo-transducers\/'  ><span class='avia-bullet'><\/span><span class='avia-menu-text'>Buzzers and piezo transducers<\/span><\/a><\/li>\n<li class='menu-item av-10csxu-449b535d6fcbcf81d9e9b089b3076ebc menu-item-top-level menu-item-top-level-4' role='menuitem'><a href='https:\/\/owolff.com\/en\/application-support\/diaphragm-design\/'  ><span class='avia-bullet'><\/span><span class='avia-menu-text'>Diaphragm design<\/span><\/a><\/li>\n<li class='menu-item av-udpvu-e1bbe7aa4d2d4c10eebfb8b1ae823c25 menu-item-top-level menu-item-top-level-5' role='menuitem'><a href='https:\/\/owolff.com\/en\/application-support\/headphones-and-earphones\/'  ><span class='avia-bullet'><\/span><span class='avia-menu-text'>Head- and earphones<\/span><\/a><\/li>\n<li class='menu-item av-qbo62-ed4fc6559f9ecc15693b255a1c6f8ef9 menu-item-top-level menu-item-top-level-6' role='menuitem'><a href='https:\/\/owolff.com\/en\/application-support\/simulation-in-comsol-multiphysics\/'  ><span class='avia-bullet'><\/span><span class='avia-menu-text'>Simulation in Comsol Multiphysics\u00ae<\/span><\/a><\/li>\n<li class='menu-item av-megu2-f840722b0e8b5793f96f9f727735da54 menu-item-top-level menu-item-top-level-7' role='menuitem'><a href='https:\/\/owolff.com\/en\/application-support\/speaker-system-design\/'  ><span class='avia-bullet'><\/span><span class='avia-menu-text'>Speaker system design<\/span><\/a><\/li>\n<li class='menu-item av-hq3vm-83c9b19d3d567bfed0f8d80d4613f69d menu-item-top-level menu-item-top-level-8' role='menuitem'><a href='https:\/\/owolff.com\/en\/application-support\/telecom-handsets\/'  ><span class='avia-bullet'><\/span><span class='avia-menu-text'>Telecom handsets<\/span><\/a><\/li>\n<li class='menu-item av-72j8i-9162509e1ce42368ae9ca7583ac1b8ac menu-item-top-level menu-item-top-level-9' role='menuitem'><a href='https:\/\/owolff.com\/en\/application-support\/transducer-design\/'  ><span class='avia-bullet'><\/span><span class='avia-menu-text'>Transducer design<\/span><\/a><\/li>\n<\/ul><\/div><\/div><div class='sticky_placeholder'><\/div>\n<div id='av_section_2'  class='avia-section av-16tdaf-bbedcf932cc7c9ea105505d28b477b87 main_color avia-section-default avia-no-border-styling  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type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-8qp9c-a1b403edb2893acba175cbfdacaee328\">\n#top .av-special-heading.av-8qp9c-a1b403edb2893acba175cbfdacaee328{\nmargin:80px 0 0 0;\npadding-bottom:20px;\ncolor:#101010;\nfont-size:30px;\n}\nbody .av-special-heading.av-8qp9c-a1b403edb2893acba175cbfdacaee328 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n#top #wrap_all .av-special-heading.av-8qp9c-a1b403edb2893acba175cbfdacaee328 .av-special-heading-tag{\nfont-size:30px;\n}\n.av-special-heading.av-8qp9c-a1b403edb2893acba175cbfdacaee328 .special-heading-inner-border{\nborder-color:#101010;\n}\n.av-special-heading.av-8qp9c-a1b403edb2893acba175cbfdacaee328 .av-subheading{\nfont-size:15px;\n}\n\n@media only screen and (min-width: 480px) and (max-width: 767px){ \n#top #wrap_all .av-special-heading.av-8qp9c-a1b403edb2893acba175cbfdacaee328 .av-special-heading-tag{\nfont-size:0.8em;\n}\n}\n\n@media only screen and (max-width: 479px){ \n#top #wrap_all .av-special-heading.av-8qp9c-a1b403edb2893acba175cbfdacaee328 .av-special-heading-tag{\nfont-size:0.8em;\n}\n}\n<\/style>\n<div  class='av-special-heading av-8qp9c-a1b403edb2893acba175cbfdacaee328 av-special-heading-h2 custom-color-heading blockquote modern-quote  avia-builder-el-6  el_before_av_textblock  avia-builder-el-first  av-inherit-size'><h2 class='av-special-heading-tag '  itemprop=\"headline\"  >Simulating both mechanical, electrical and acoustic parameters in COMSOL Multiphysics<\/h2><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><br \/>\n<section  class='av_textblock_section av-le2n1l79-0103bab9bf0be26efdfcaf94948ea9ad '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p>Ole Wolff have been using COMSOL Multiphysics\u00ae since 2016 and are now using it to simulate both mechanical, electrical and acoustical parameters of loudspeakers and enclosures.<br \/>\nThis page gives a quick overview of some of these simulations using the (now discontinued) 19mm speaker OWS-1943T-8CP as an example.<\/p>\n<p>This particular Ole Wolff speaker has been modeled in close cooperation with COMSOL and is now featured as a model in the COMSOL Multiphysics software.<\/p>\n<\/div><\/section><\/p><\/div><\/div><!--close column table wrapper. Autoclose: 1 -->\n\n<\/div><\/div><\/div><!-- close content main div --><\/div><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-l9pgd6ns-d90812e310f0806715ad4ba56760fa43\">\n.avia-section.av-l9pgd6ns-d90812e310f0806715ad4ba56760fa43 .av-parallax .av-parallax-inner{\nbackground-color:#702423;\nbackground-image:url(https:\/\/owolff.com\/wp-content\/uploads\/2023\/01\/background_graphic2-1-909x1030.png);\nbackground-repeat:no-repeat;\nbackground-position:50% 50%;\nbackground-attachment:scroll;\n}\n<\/style>\n<div id='av_section_3'  class='avia-section av-l9pgd6ns-d90812e310f0806715ad4ba56760fa43 main_color avia-section-no-padding avia-no-border-styling  avia-builder-el-8  el_after_av_section  el_before_av_section  av-parallax-section avia-bg-style-parallax container_wrap sidebar_right'  data-section-bg-repeat='no-repeat'><div class='av-parallax' data-avia-parallax-ratio='0.3' ><div class='av-parallax-inner main_color avia-full-stretch'><\/div><\/div><div class='container av-section-cont-open' ><div class='template-page content  av-content-small alpha units'><div class='post-entry post-entry-type-page post-entry-720'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-jd1x4-be3841d47b7cbd5df3f0b26051e23dbb\">\n.flex_column.av-jd1x4-be3841d47b7cbd5df3f0b26051e23dbb{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-jd1x4-be3841d47b7cbd5df3f0b26051e23dbb av_two_third  avia-builder-el-9  el_before_av_one_third  avia-builder-el-first  first flex_column_div av-zero-column-padding  '     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-8vyaw-a5ac665833ea492a392713ab3cae3198\">\n#top .av-special-heading.av-8vyaw-a5ac665833ea492a392713ab3cae3198{\nmargin:50px 0 0 0;\npadding-bottom:20px;\ncolor:#ffffff;\nfont-size:30px;\n}\nbody .av-special-heading.av-8vyaw-a5ac665833ea492a392713ab3cae3198 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n#top #wrap_all .av-special-heading.av-8vyaw-a5ac665833ea492a392713ab3cae3198 .av-special-heading-tag{\nfont-size:30px;\n}\n.av-special-heading.av-8vyaw-a5ac665833ea492a392713ab3cae3198 .special-heading-inner-border{\nborder-color:#ffffff;\n}\n.av-special-heading.av-8vyaw-a5ac665833ea492a392713ab3cae3198 .av-subheading{\nfont-size:15px;\n}\n\n@media only screen and (min-width: 480px) and (max-width: 767px){ \n#top #wrap_all .av-special-heading.av-8vyaw-a5ac665833ea492a392713ab3cae3198 .av-special-heading-tag{\nfont-size:0.8em;\n}\n}\n\n@media only screen and (max-width: 479px){ \n#top #wrap_all .av-special-heading.av-8vyaw-a5ac665833ea492a392713ab3cae3198 .av-special-heading-tag{\nfont-size:0.8em;\n}\n}\n<\/style>\n<div  class='av-special-heading av-8vyaw-a5ac665833ea492a392713ab3cae3198 av-special-heading-h2 custom-color-heading blockquote modern-quote  avia-builder-el-10  el_before_av_textblock  avia-builder-el-first  av-inherit-size'><h2 class='av-special-heading-tag '  itemprop=\"headline\"  >Get the best results<\/h2><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-l9iabezh-c1222f3ea14f9cbdeeb14ee2486cdbe6\">\n#top .av_textblock_section.av-l9iabezh-c1222f3ea14f9cbdeeb14ee2486cdbe6 .avia_textblock{\ncolor:#ffffff;\n}\n<\/style>\n<section  class='av_textblock_section av-l9iabezh-c1222f3ea14f9cbdeeb14ee2486cdbe6 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock av_inherit_color'  itemprop=\"text\" ><div class=\"BrdtekstFutura\">COMSOL Multiphysics enables Ole Wolff to make confident decisions based on simulation results and optimize parts of acoustic products for best price\/performance ratio.<\/div>\n<div class=\"BrdtekstFutura\"><\/div>\n<div class=\"BrdtekstFutura\">Agreement between CAD drawing and physical samples is key to obtain correct simulation results.<\/div>\n<\/div><\/section><\/p><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-85kgg-9acce6464910df5fe238aad06381746c\">\n.flex_column.av-85kgg-9acce6464910df5fe238aad06381746c{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-85kgg-9acce6464910df5fe238aad06381746c av_one_third  avia-builder-el-12  el_after_av_two_third  avia-builder-el-last  flex_column_div av-zero-column-padding  '     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-lluv6u2h-50a4853e5d0211d1386c3b8f195727ce\">\n#top .hr.hr-invisible.av-lluv6u2h-50a4853e5d0211d1386c3b8f195727ce{\nheight:80px;\n}\n<\/style>\n<div  class='hr av-lluv6u2h-50a4853e5d0211d1386c3b8f195727ce hr-invisible  avia-builder-el-13  el_before_av_button  avia-builder-el-first '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div><br \/>\n<div  class='avia-button-wrap av-lluv17j0-03e36dc51951ebad49051154a3c03900-wrap avia-button-center  avia-builder-el-14  el_after_av_hr  avia-builder-el-last  button-front-4'>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-lluv17j0-03e36dc51951ebad49051154a3c03900\">\n#top #wrap_all .avia-button.av-lluv17j0-03e36dc51951ebad49051154a3c03900{\ncolor:#ffffff;\ntransition:all 0.4s ease-in-out;\n}\n#top #wrap_all .avia-button.av-lluv17j0-03e36dc51951ebad49051154a3c03900:hover{\nbackground-color:#702423;\ncolor:#ffffff;\ntransition:all 0.4s ease-in-out;\n}\n#top #wrap_all .avia-button.av-lluv17j0-03e36dc51951ebad49051154a3c03900 .avia-svg-icon svg:first-child{\nfill:#ffffff;\nstroke:#ffffff;\n}\n#top #wrap_all .avia-button.av-lluv17j0-03e36dc51951ebad49051154a3c03900:hover .avia-svg-icon svg:first-child{\nfill:#ffffff;\nstroke:#ffffff;\n}\n<\/style>\n<a href='https:\/\/owolff.com\/wp-content\/uploads\/2024\/02\/Ole_Wolff_virtual_prototyping_2024-02-05.pdf'  class='avia-button av-lluv17j0-03e36dc51951ebad49051154a3c03900 av-link-btn avia-icon_select-yes-right-icon avia-size-large avia-position-center avia-color-light'  target=\"_blank\"  rel=\"noopener noreferrer\"  aria-label=\"Ole Wolff virtual prototyping\"><span class='avia_iconbox_title' >Ole Wolff virtual prototyping<\/span><span class='avia_button_icon avia_button_icon_right avia-iconfont avia-font-entypo-fontello' data-av_icon='\ue875' data-av_iconfont='entypo-fontello' ><\/span><\/a><\/div><\/p><\/div>\n\n<\/div><\/div><\/div><!-- close content main div --><\/div><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-cpshs-97921fdcb7e0184a84b5c458594cdab9\">\n.avia-section.av-cpshs-97921fdcb7e0184a84b5c458594cdab9{\nbackground-color:#f9f9f9;\nbackground-image:unset;\n}\n<\/style>\n<div id='av_section_4'  class='avia-section av-cpshs-97921fdcb7e0184a84b5c458594cdab9 main_color avia-section-default avia-no-border-styling  avia-builder-el-15  el_after_av_section  el_before_av_section  avia-bg-style-scroll container_wrap sidebar_right'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-small alpha units'><div class='post-entry post-entry-type-page post-entry-720'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-klhgg-40ac69eb38d84a7871773e6ce83bba9a\">\n#top .av-special-heading.av-klhgg-40ac69eb38d84a7871773e6ce83bba9a{\nmargin:80px 0 0 0;\npadding-bottom:20px;\ncolor:#101010;\nfont-size:30px;\n}\nbody .av-special-heading.av-klhgg-40ac69eb38d84a7871773e6ce83bba9a .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n#top #wrap_all .av-special-heading.av-klhgg-40ac69eb38d84a7871773e6ce83bba9a .av-special-heading-tag{\nfont-size:30px;\n}\n.av-special-heading.av-klhgg-40ac69eb38d84a7871773e6ce83bba9a .special-heading-inner-border{\nborder-color:#101010;\n}\n.av-special-heading.av-klhgg-40ac69eb38d84a7871773e6ce83bba9a .av-subheading{\nfont-size:15px;\n}\n\n@media only screen and (min-width: 480px) and (max-width: 767px){ \n#top #wrap_all .av-special-heading.av-klhgg-40ac69eb38d84a7871773e6ce83bba9a .av-special-heading-tag{\nfont-size:0.8em;\n}\n}\n\n@media only screen and (max-width: 479px){ \n#top #wrap_all .av-special-heading.av-klhgg-40ac69eb38d84a7871773e6ce83bba9a .av-special-heading-tag{\nfont-size:0.8em;\n}\n}\n<\/style>\n<div  class='av-special-heading av-klhgg-40ac69eb38d84a7871773e6ce83bba9a av-special-heading-h2 custom-color-heading blockquote modern-quote modern-centered  avia-builder-el-16  el_before_av_hr  avia-builder-el-first  av-inherit-size'><h2 class='av-special-heading-tag '  itemprop=\"headline\"  >Magnetic analysis<\/h2><div class='av_custom_color av-subheading av-subheading_below'><p>Simulating the motor<\/p>\n<\/div><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-le44gls1-60ae67b4c1436c8f14c2976b8e43f12e\">\n#top .hr.hr-invisible.av-le44gls1-60ae67b4c1436c8f14c2976b8e43f12e{\nheight:30px;\n}\n<\/style>\n<div  class='hr av-le44gls1-60ae67b4c1436c8f14c2976b8e43f12e hr-invisible  avia-builder-el-17  el_after_av_heading  el_before_av_one_half '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-fcecw-625805393ca68a08166360ae9d5bcaba\">\n.flex_column.av-fcecw-625805393ca68a08166360ae9d5bcaba{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-fcecw-625805393ca68a08166360ae9d5bcaba av_one_half  avia-builder-el-18  el_after_av_hr  el_before_av_one_half  first flex_column_div av-zero-column-padding  '     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-ejnmw-d52965ddf77e5febb71b50581bf0b68b\">\n#top .av-special-heading.av-ejnmw-d52965ddf77e5febb71b50581bf0b68b{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-ejnmw-d52965ddf77e5febb71b50581bf0b68b .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-ejnmw-d52965ddf77e5febb71b50581bf0b68b .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-ejnmw-d52965ddf77e5febb71b50581bf0b68b av-special-heading-h3  avia-builder-el-19  el_before_av_iconlist  avia-builder-el-first '><h3 class='av-special-heading-tag '  itemprop=\"headline\"  >2D Axisymmetric simulation includes<\/h3><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-l8vdykex-45a97da42757413164b2dc06a686e11f\">\n#top .avia-icon-list-container.av-l8vdykex-45a97da42757413164b2dc06a686e11f .iconlist_icon{\ncolor:#ffffff;\nbackground-color:#702423;\n}\n#top .avia-icon-list-container.av-l8vdykex-45a97da42757413164b2dc06a686e11f .iconlist_icon svg:first-child{\nstroke:#ffffff;\nfill:#ffffff;\n}\n.avia-icon-list-container.av-l8vdykex-45a97da42757413164b2dc06a686e11f .iconlist_content{\ncolor:#101010;\n}\n<\/style>\n<div  class='avia-icon-list-container av-l8vdykex-45a97da42757413164b2dc06a686e11f  avia-builder-el-20  el_after_av_heading  avia-builder-el-last '><ul class='avia-icon-list avia_animate_when_almost_visible avia-icon-list-left av-iconlist-small av-l8vdykex-45a97da42757413164b2dc06a686e11f avia-iconlist-animate'>\n<li><div class='iconlist_icon av-se7xs-8d9e21a76ee088317f385dac491400a6 avia-font-entypo-fontello avia-iconfont avia-font-entypo-fontello'><span class='av-icon-char' data-av_icon='\ue812' data-av_iconfont='entypo-fontello' aria-hidden=\"true\"><\/span><\/div><article class=\"article-icon-entry \"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class=\"iconlist_content_wrap\"><header class=\"entry-content-header\" aria-label=\"Icon: \"><\/header><div class='iconlist_content av_inherit_color'  itemprop=\"text\" ><p>Losses in iron<\/p>\n<\/div><\/div><footer class=\"entry-footer\"><\/footer><\/article><div class=\"iconlist-timeline\"><\/div><\/li>\n<li><div class='iconlist_icon av-iox3c-11d2b159a53f9d2ee722b92b12ebd697 avia-font-entypo-fontello avia-iconfont avia-font-entypo-fontello'><span class='av-icon-char' data-av_icon='\ue812' data-av_iconfont='entypo-fontello' aria-hidden=\"true\"><\/span><\/div><article class=\"article-icon-entry \"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class=\"iconlist_content_wrap\"><header class=\"entry-content-header\" aria-label=\"Icon: \"><\/header><div class='iconlist_content av_inherit_color'  itemprop=\"text\" ><p>Thin low permeability gaps between iron and magnets due to glue<\/p>\n<\/div><\/div><footer class=\"entry-footer\"><\/footer><\/article><div class=\"iconlist-timeline\"><\/div><\/li>\n<\/ul><\/div><\/p><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-779w0-00dd79ad4a97f69d258d0403ae5327ab\">\n.flex_column.av-779w0-00dd79ad4a97f69d258d0403ae5327ab{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-779w0-00dd79ad4a97f69d258d0403ae5327ab av_one_half  avia-builder-el-21  el_after_av_one_half  el_before_av_one_half  flex_column_div av-zero-column-padding  '     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-bai1k-87a0878d1c3c6292f5776e5edb9a7273\">\n#top .av-special-heading.av-bai1k-87a0878d1c3c6292f5776e5edb9a7273{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-bai1k-87a0878d1c3c6292f5776e5edb9a7273 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-bai1k-87a0878d1c3c6292f5776e5edb9a7273 .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-bai1k-87a0878d1c3c6292f5776e5edb9a7273 av-special-heading-h3  avia-builder-el-22  el_before_av_iconlist  avia-builder-el-first '><h3 class='av-special-heading-tag '  itemprop=\"headline\"  >Plots gives insight about<\/h3><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-l8vdykex-8-8ae957528dacd16dc95e1d2dfc093ecb\">\n#top .avia-icon-list-container.av-l8vdykex-8-8ae957528dacd16dc95e1d2dfc093ecb .iconlist_icon{\ncolor:#ffffff;\nbackground-color:#702423;\n}\n#top .avia-icon-list-container.av-l8vdykex-8-8ae957528dacd16dc95e1d2dfc093ecb .iconlist_icon svg:first-child{\nstroke:#ffffff;\nfill:#ffffff;\n}\n.avia-icon-list-container.av-l8vdykex-8-8ae957528dacd16dc95e1d2dfc093ecb .iconlist_content{\ncolor:#101010;\n}\n<\/style>\n<div  class='avia-icon-list-container av-l8vdykex-8-8ae957528dacd16dc95e1d2dfc093ecb  avia-builder-el-23  el_after_av_heading  avia-builder-el-last '><ul class='avia-icon-list avia_animate_when_almost_visible avia-icon-list-left av-iconlist-small av-l8vdykex-8-8ae957528dacd16dc95e1d2dfc093ecb avia-iconlist-animate'>\n<li><div class='iconlist_icon av-gakao-e3eb8a5c0d6fb69be4e74e337d56699c avia-font-entypo-fontello avia-iconfont avia-font-entypo-fontello'><span class='av-icon-char' data-av_icon='\ue812' data-av_iconfont='entypo-fontello' aria-hidden=\"true\"><\/span><\/div><article class=\"article-icon-entry \"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class=\"iconlist_content_wrap\"><header class=\"entry-content-header\" aria-label=\"Icon: \"><\/header><div class='iconlist_content av_inherit_color'  itemprop=\"text\" ><p>Static flux density<\/p>\n<\/div><\/div><footer class=\"entry-footer\"><\/footer><\/article><div class=\"iconlist-timeline\"><\/div><\/li>\n<li><div class='iconlist_icon av-8u7sw-8a45830cf6c053402d52ad9d12ba4622 avia-font-entypo-fontello avia-iconfont avia-font-entypo-fontello'><span class='av-icon-char' data-av_icon='\ue812' data-av_iconfont='entypo-fontello' aria-hidden=\"true\"><\/span><\/div><article class=\"article-icon-entry \"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class=\"iconlist_content_wrap\"><header class=\"entry-content-header\" aria-label=\"Icon: \"><\/header><div class='iconlist_content av_inherit_color'  itemprop=\"text\" ><p>Induced current density at various frequencies<\/p>\n<\/div><\/div><footer class=\"entry-footer\"><\/footer><\/article><div class=\"iconlist-timeline\"><\/div><\/li>\n<\/ul><\/div><\/p><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-779w0-7-7233b5823a46a9887e11e7c181d71497\">\n.flex_column.av-779w0-7-7233b5823a46a9887e11e7c181d71497{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-779w0-7-7233b5823a46a9887e11e7c181d71497 av_one_half  avia-builder-el-24  el_after_av_one_half  el_before_av_one_half  first flex_column_div av-zero-column-padding  column-top-margin'     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-hd7i0-18ebc12afc1fb32892f49582ac24fc34\">\n.avia-image-container.av-hd7i0-18ebc12afc1fb32892f49582ac24fc34 img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-hd7i0-18ebc12afc1fb32892f49582ac24fc34 .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-image-container av-hd7i0-18ebc12afc1fb32892f49582ac24fc34 av-styling- avia_animated_image av-animated-when-visible-95 fade-in avia-align-center  avia-builder-el-25  el_before_av_textblock  avia-builder-el-first '   itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><img decoding=\"async\" fetchpriority=\"high\" class='wp-image-724 avia-img-lazy-loading-not-724 avia_image ' src=\"https:\/\/owolff.com\/wp-content\/uploads\/2022\/10\/Comsol_axisymmetric_magnetic_simulation.jpeg\" alt='' title='Comsol_axisymmetric_magnetic_simulation'  height=\"394\" width=\"500\"  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/owolff.com\/wp-content\/uploads\/2022\/10\/Comsol_axisymmetric_magnetic_simulation.jpeg 500w, https:\/\/owolff.com\/wp-content\/uploads\/2022\/10\/Comsol_axisymmetric_magnetic_simulation-300x236.jpeg 300w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><\/div><\/div><\/div><br \/>\n<section  class='av_textblock_section av-l9i9r7ps-b53f7b5a1dab6263341a35da74424abe '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><div class=\"ow-box-single-100-wrapper\" style=\"text-align: center;\">\n<div class=\"ow-box-single-100\">\n<div class=\"ow-box sec_4927\">\n<div class=\"BrdtekstFutura\"><em>Mesh used in the axisymmetric magnetic simulation.<\/em><\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"ow-box-single-100-wrapper\">\n<div class=\"ow-box-single-100\">\n<div class=\"ow-box sec_4928\"><\/div>\n<\/div>\n<\/div>\n<\/div><\/section><\/p><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-779w0-6-b7cd82fae3bb3765de62a363e0d939b4\">\n.flex_column.av-779w0-6-b7cd82fae3bb3765de62a363e0d939b4{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-779w0-6-b7cd82fae3bb3765de62a363e0d939b4 av_one_half  avia-builder-el-27  el_after_av_one_half  el_before_av_one_half  flex_column_div av-zero-column-padding  column-top-margin'     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-9v0nc-707f38fbaea9884a256312095385d8e3\">\n.avia-image-container.av-9v0nc-707f38fbaea9884a256312095385d8e3 img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-9v0nc-707f38fbaea9884a256312095385d8e3 .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-image-container av-9v0nc-707f38fbaea9884a256312095385d8e3 av-styling- avia_animated_image av-animated-when-visible-95 fade-in avia-align-center  avia-builder-el-28  el_before_av_textblock  avia-builder-el-first '   itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><img decoding=\"async\" fetchpriority=\"high\" class='wp-image-732 avia-img-lazy-loading-not-732 avia_image ' src=\"https:\/\/owolff.com\/wp-content\/uploads\/2022\/10\/flux_density_in_the_magnet_system_a.jpeg\" alt='' title='flux_density_in_the_magnet_system_a'  height=\"394\" width=\"500\"  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/owolff.com\/wp-content\/uploads\/2022\/10\/flux_density_in_the_magnet_system_a.jpeg 500w, https:\/\/owolff.com\/wp-content\/uploads\/2022\/10\/flux_density_in_the_magnet_system_a-300x236.jpeg 300w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><\/div><\/div><\/div><br \/>\n<section  class='av_textblock_section av-l9i9r7ps-5-40763085d190e4b0e43099289c35dfeb '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><div class=\"ow-box-single-100-wrapper\" style=\"text-align: center;\">\n<div class=\"ow-box-single-100\">\n<div class=\"ow-box sec_4927\">\n<div class=\"BrdtekstFutura\"><em>Plot of flux density in the magnet system.<\/em><\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"ow-box-single-100-wrapper\">\n<div class=\"ow-box-single-100\">\n<div class=\"ow-box sec_4928\"><\/div>\n<\/div>\n<\/div>\n<\/div><\/section><\/p><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-y8cr4-c525ba498d054c1f46383f279936c78b\">\n.flex_column.av-y8cr4-c525ba498d054c1f46383f279936c78b{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-y8cr4-c525ba498d054c1f46383f279936c78b av_one_half  avia-builder-el-30  el_after_av_one_half  el_before_av_one_half  first flex_column_div av-zero-column-padding  column-top-margin'     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-l9ia34lp-4e5a7de90c9e0addc12a926b6ff4e1b3\">\n.avia-image-container.av-l9ia34lp-4e5a7de90c9e0addc12a926b6ff4e1b3 img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-l9ia34lp-4e5a7de90c9e0addc12a926b6ff4e1b3 .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-image-container av-l9ia34lp-4e5a7de90c9e0addc12a926b6ff4e1b3 av-styling- avia_animated_image av-animated-when-visible-95 left-to-right avia-align-center  avia-builder-el-31  el_before_av_textblock  avia-builder-el-first '   itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><img decoding=\"async\" fetchpriority=\"high\" class='wp-image-731 avia-img-lazy-loading-not-731 avia_image ' src=\"https:\/\/owolff.com\/wp-content\/uploads\/2022\/10\/the_acoustic_analysis._1a.jpg\" alt='' title='the_acoustic_analysis._1a'  height=\"394\" width=\"500\"  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/owolff.com\/wp-content\/uploads\/2022\/10\/the_acoustic_analysis._1a.jpg 500w, https:\/\/owolff.com\/wp-content\/uploads\/2022\/10\/the_acoustic_analysis._1a-300x236.jpg 300w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><\/div><\/div><\/div><br \/>\n<section  class='av_textblock_section av-l9i9rsqm-bafb837fcc25eb2ed80f73378d171898 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p style=\"text-align: center;\"><em>Coil resistance and reactance as function of frequency is derived. These analysis results are later used as lumped parameters in the acoustic analysis.<\/em><\/p>\n<\/div><\/section><\/p><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-y8cr4-4-f42a1c1262b00f201011f149ddda5ab2\">\n.flex_column.av-y8cr4-4-f42a1c1262b00f201011f149ddda5ab2{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-y8cr4-4-f42a1c1262b00f201011f149ddda5ab2 av_one_half  avia-builder-el-33  el_after_av_one_half  avia-builder-el-last  flex_column_div av-zero-column-padding  column-top-margin'     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-l9ia3bqp-bcc3cfc22730d17f161dc8466eb12803\">\n.avia-image-container.av-l9ia3bqp-bcc3cfc22730d17f161dc8466eb12803 img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-l9ia3bqp-bcc3cfc22730d17f161dc8466eb12803 .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-image-container av-l9ia3bqp-bcc3cfc22730d17f161dc8466eb12803 av-styling- avia_animated_image av-animated-when-visible-95 right-to-left avia-align-center  avia-builder-el-34  el_before_av_textblock  avia-builder-el-first '   itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><img decoding=\"async\" fetchpriority=\"high\" class='wp-image-730 avia-img-lazy-loading-not-730 avia_image ' src=\"https:\/\/owolff.com\/wp-content\/uploads\/2022\/10\/the_acoustic_analysis_a.jpeg\" alt='' title='the_acoustic_analysis_a'  height=\"394\" width=\"500\"  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/owolff.com\/wp-content\/uploads\/2022\/10\/the_acoustic_analysis_a.jpeg 500w, https:\/\/owolff.com\/wp-content\/uploads\/2022\/10\/the_acoustic_analysis_a-300x236.jpeg 300w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><\/div><\/div><\/div><br \/>\n<section  class='av_textblock_section av-l9i9s0vc-0c846ef8709f006c0fddff5f64dfa9d8 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p style=\"text-align: center;\"><em>The BL(x) plot is very close to the measured Klippel response and reveals that the voice coil is slightly off-center. Ole Wolff have both Comsol for simulation and Klippel for verification, which is a very powerful combination.<\/em><\/p>\n<\/div><\/section><\/p><\/div>\n\n<\/div><\/div><\/div><!-- close content main div --><\/div><\/div><div id='av_section_5'  class='avia-section av-l9pg78ay-21e4898c50140b47ae8aeddf780527a5 main_color avia-section-default avia-no-border-styling  avia-builder-el-36  el_after_av_section  el_before_av_section  avia-bg-style-scroll container_wrap sidebar_right'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-small alpha units'><div class='post-entry post-entry-type-page post-entry-720'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-cn9g0-f9398eccbd7bebc054647b93996e12e2\">\n#top .av-special-heading.av-cn9g0-f9398eccbd7bebc054647b93996e12e2{\nmargin:80px 0 0 0;\npadding-bottom:20px;\ncolor:#101010;\nfont-size:30px;\n}\nbody .av-special-heading.av-cn9g0-f9398eccbd7bebc054647b93996e12e2 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n#top #wrap_all .av-special-heading.av-cn9g0-f9398eccbd7bebc054647b93996e12e2 .av-special-heading-tag{\nfont-size:30px;\n}\n.av-special-heading.av-cn9g0-f9398eccbd7bebc054647b93996e12e2 .special-heading-inner-border{\nborder-color:#101010;\n}\n.av-special-heading.av-cn9g0-f9398eccbd7bebc054647b93996e12e2 .av-subheading{\nfont-size:15px;\n}\n\n@media only screen and (min-width: 480px) and (max-width: 767px){ \n#top #wrap_all .av-special-heading.av-cn9g0-f9398eccbd7bebc054647b93996e12e2 .av-special-heading-tag{\nfont-size:0.8em;\n}\n}\n\n@media only screen and (max-width: 479px){ \n#top #wrap_all .av-special-heading.av-cn9g0-f9398eccbd7bebc054647b93996e12e2 .av-special-heading-tag{\nfont-size:0.8em;\n}\n}\n<\/style>\n<div  class='av-special-heading av-cn9g0-f9398eccbd7bebc054647b93996e12e2 av-special-heading-h2 custom-color-heading blockquote modern-quote modern-centered  avia-builder-el-37  el_before_av_textblock  avia-builder-el-first  av-inherit-size'><h2 class='av-special-heading-tag '  itemprop=\"headline\"  >Mechanical analysis<\/h2><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div>\n<section  class='av_textblock_section av-le2n1l79-9-200da3390b46287390967c5ec041c794 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p style=\"text-align: center;\">Simulating the diaphragm.<br \/>\nThe diaphragm is analyzed using a combination of Solid Mechanics for the voice coil and Shell physics using geometric nonlinearities for the diaphragm.<\/p>\n<p style=\"text-align: center;\">In the static study, diaphragm deformations and stresses can be displayed.<\/p>\n<\/div><\/section>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-gwd0o-a19948f33429f1d69fce52023b3160be\">\n#top .flex_column.av-gwd0o-a19948f33429f1d69fce52023b3160be{\nmargin-top:50px;\nmargin-bottom:0px;\n}\n.flex_column.av-gwd0o-a19948f33429f1d69fce52023b3160be{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n.responsive #top #wrap_all .flex_column.av-gwd0o-a19948f33429f1d69fce52023b3160be{\nmargin-top:50px;\nmargin-bottom:0px;\n}\n<\/style>\n<div  class='flex_column av-gwd0o-a19948f33429f1d69fce52023b3160be av_one_half  avia-builder-el-39  el_after_av_textblock  el_before_av_one_half  first flex_column_div av-zero-column-padding  column-top-margin'     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-l9ia59jo-f097a349c32d6906265010cff72cdfb7\">\n.avia-image-container.av-l9ia59jo-f097a349c32d6906265010cff72cdfb7 img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-l9ia59jo-f097a349c32d6906265010cff72cdfb7 .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-image-container av-l9ia59jo-f097a349c32d6906265010cff72cdfb7 av-styling- avia_animated_image av-animated-when-visible-95 fade-in avia-align-center  avia-builder-el-40  el_before_av_textblock  avia-builder-el-first '   itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><img decoding=\"async\" fetchpriority=\"high\" class='wp-image-729 avia-img-lazy-loading-not-729 avia_image ' src=\"https:\/\/owolff.com\/wp-content\/uploads\/2022\/10\/Comsol_analysis_mechanical_1a.jpeg\" alt='' title='Comsol_analysis_mechanical_1a'  height=\"394\" width=\"500\"  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/owolff.com\/wp-content\/uploads\/2022\/10\/Comsol_analysis_mechanical_1a.jpeg 500w, https:\/\/owolff.com\/wp-content\/uploads\/2022\/10\/Comsol_analysis_mechanical_1a-300x236.jpeg 300w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><\/div><\/div><\/div><br \/>\n<section  class='av_textblock_section av-l9i9srbg-ea90bf34bd966cafd64452902400278b '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p style=\"text-align: center;\"><em>Displacement and breakups at selected frequencies.<\/em><\/p>\n<\/div><\/section><\/p><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-gwd0o-3-1f720ae3bde609eba8c42f93e699c043\">\n#top .flex_column.av-gwd0o-3-1f720ae3bde609eba8c42f93e699c043{\nmargin-top:50px;\nmargin-bottom:0px;\n}\n.flex_column.av-gwd0o-3-1f720ae3bde609eba8c42f93e699c043{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n.responsive #top #wrap_all .flex_column.av-gwd0o-3-1f720ae3bde609eba8c42f93e699c043{\nmargin-top:50px;\nmargin-bottom:0px;\n}\n<\/style>\n<div  class='flex_column av-gwd0o-3-1f720ae3bde609eba8c42f93e699c043 av_one_half  avia-builder-el-42  el_after_av_one_half  avia-builder-el-last  flex_column_div av-zero-column-padding  column-top-margin'     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-l9ia5hjg-1a0a0b0abbd7744982364dcbd343fe35\">\n.avia-image-container.av-l9ia5hjg-1a0a0b0abbd7744982364dcbd343fe35 img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-l9ia5hjg-1a0a0b0abbd7744982364dcbd343fe35 .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-image-container av-l9ia5hjg-1a0a0b0abbd7744982364dcbd343fe35 av-styling- avia_animated_image av-animated-when-visible-95 fade-in avia-align-center  avia-builder-el-43  el_before_av_textblock  avia-builder-el-first '   itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><img decoding=\"async\" fetchpriority=\"high\" class='wp-image-728 avia-img-lazy-loading-not-728 avia_image ' src=\"https:\/\/owolff.com\/wp-content\/uploads\/2022\/10\/Comsol_analysis_mechanical_1.jpeg\" alt='' title='Comsol_analysis_mechanical_1'  height=\"600\" width=\"800\"  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/owolff.com\/wp-content\/uploads\/2022\/10\/Comsol_analysis_mechanical_1.jpeg 800w, https:\/\/owolff.com\/wp-content\/uploads\/2022\/10\/Comsol_analysis_mechanical_1-300x225.jpeg 300w, https:\/\/owolff.com\/wp-content\/uploads\/2022\/10\/Comsol_analysis_mechanical_1-768x576.jpeg 768w, https:\/\/owolff.com\/wp-content\/uploads\/2022\/10\/Comsol_analysis_mechanical_1-705x529.jpeg 705w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/div><\/div><\/div><br \/>\n<section  class='av_textblock_section av-l9i9sxug-5d12880cf1ecdec397a4ff04ec1aaba0 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p style=\"text-align: center;\"><em>The cms analysis has pretty good agreement with the Klippel data. Correlation between simulation and test data will always depend on the initial accuracy of the CAD file and production tolerances of the tested unit.<\/em><\/p>\n<\/div><\/section><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-l9pfw9v9-53d4188bf726c049918b6892ca1ac3bc\">\n#top .hr.hr-invisible.av-l9pfw9v9-53d4188bf726c049918b6892ca1ac3bc{\nheight:30px;\n}\n<\/style>\n<div  class='hr av-l9pfw9v9-53d4188bf726c049918b6892ca1ac3bc hr-invisible  avia-builder-el-45  el_after_av_textblock  el_before_av_button '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div><br \/>\n<div  class='avia-button-wrap av-lgp0slq1-b8dc0265e6e5cb99b7a0e203444961c4-wrap avia-button-center  avia-builder-el-46  el_after_av_hr  avia-builder-el-last  button-front-2'>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-lgp0slq1-b8dc0265e6e5cb99b7a0e203444961c4\">\n#top #wrap_all .avia-button.av-lgp0slq1-b8dc0265e6e5cb99b7a0e203444961c4{\ncolor:#bf4542;\ntransition:all 0.4s ease-in-out;\n}\n#top #wrap_all .avia-button.av-lgp0slq1-b8dc0265e6e5cb99b7a0e203444961c4:hover{\nbackground-color:#ffffff;\ncolor:#ffffff;\ntransition:all 0.4s ease-in-out;\n}\n#top #wrap_all .avia-button.av-lgp0slq1-b8dc0265e6e5cb99b7a0e203444961c4 .avia-svg-icon svg:first-child{\nfill:#bf4542;\nstroke:#bf4542;\n}\n#top #wrap_all .avia-button.av-lgp0slq1-b8dc0265e6e5cb99b7a0e203444961c4:hover .avia-svg-icon svg:first-child{\nfill:#ffffff;\nstroke:#ffffff;\n}\n<\/style>\n<a href='https:\/\/owolff.com\/en\/application-support\/diaphragm-design\/'  class='avia-button av-lgp0slq1-b8dc0265e6e5cb99b7a0e203444961c4 av-link-btn avia-icon_select-yes-right-icon avia-size-large avia-position-center avia-color-light'   aria-label=\"Read more about diaphragm design\"><span class='avia_iconbox_title' >Read more about diaphragm design<\/span><span class='avia_button_icon avia_button_icon_right avia-iconfont avia-font-entypo-fontello' data-av_icon='\ue875' data-av_iconfont='entypo-fontello' ><\/span><\/a><\/div><\/p><\/div>\n\n<\/div><\/div><\/div><!-- close content main div --><\/div><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-le44u7km-8512ccd7d4fd70f175bfa7352604f744\">\n.avia-section.av-le44u7km-8512ccd7d4fd70f175bfa7352604f744{\nbackground-color:#f9f9f9;\nbackground-image:unset;\n}\n<\/style>\n<div id='av_section_6'  class='avia-section av-le44u7km-8512ccd7d4fd70f175bfa7352604f744 main_color avia-section-default avia-no-border-styling  avia-builder-el-47  el_after_av_section  el_before_av_section  avia-bg-style-scroll container_wrap sidebar_right'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-small alpha units'><div class='post-entry post-entry-type-page post-entry-720'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-8dcjs-1eacb884c2ff7989672f32976806ade4\">\n#top .av-special-heading.av-8dcjs-1eacb884c2ff7989672f32976806ade4{\nmargin:80px 0 0 0;\npadding-bottom:20px;\ncolor:#101010;\nfont-size:30px;\n}\nbody .av-special-heading.av-8dcjs-1eacb884c2ff7989672f32976806ade4 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n#top #wrap_all .av-special-heading.av-8dcjs-1eacb884c2ff7989672f32976806ade4 .av-special-heading-tag{\nfont-size:30px;\n}\n.av-special-heading.av-8dcjs-1eacb884c2ff7989672f32976806ade4 .special-heading-inner-border{\nborder-color:#101010;\n}\n.av-special-heading.av-8dcjs-1eacb884c2ff7989672f32976806ade4 .av-subheading{\nfont-size:15px;\n}\n\n@media only screen and (min-width: 480px) and (max-width: 767px){ \n#top #wrap_all .av-special-heading.av-8dcjs-1eacb884c2ff7989672f32976806ade4 .av-special-heading-tag{\nfont-size:0.8em;\n}\n}\n\n@media only screen and (max-width: 479px){ \n#top #wrap_all .av-special-heading.av-8dcjs-1eacb884c2ff7989672f32976806ade4 .av-special-heading-tag{\nfont-size:0.8em;\n}\n}\n<\/style>\n<div  class='av-special-heading av-8dcjs-1eacb884c2ff7989672f32976806ade4 av-special-heading-h2 custom-color-heading blockquote modern-quote modern-centered  avia-builder-el-48  el_before_av_one_half  avia-builder-el-first  av-inherit-size'><h2 class='av-special-heading-tag '  itemprop=\"headline\"  >Acoustic analysis<\/h2><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-a0uiw-0a7c4d09aae7b52a626bd7c668f9ef68\">\n#top .flex_column.av-a0uiw-0a7c4d09aae7b52a626bd7c668f9ef68{\nmargin-top:50px;\nmargin-bottom:0px;\n}\n.flex_column.av-a0uiw-0a7c4d09aae7b52a626bd7c668f9ef68{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n.responsive #top #wrap_all .flex_column.av-a0uiw-0a7c4d09aae7b52a626bd7c668f9ef68{\nmargin-top:50px;\nmargin-bottom:0px;\n}\n<\/style>\n<div  class='flex_column av-a0uiw-0a7c4d09aae7b52a626bd7c668f9ef68 av_one_half  avia-builder-el-49  el_after_av_heading  el_before_av_one_half  first flex_column_div av-zero-column-padding  '     ><section  class='av_textblock_section av-l9ia7umf-7ed2ee19928183ab1965ff729423ce08 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p>Combining physics to simulate the resulting acoustic output.<\/p>\n<p>The acoustic analysis is performed using the following physics:<\/p>\n<ul>\n<li>Solid and Shell mechanics (for the diaphragm and voice coil)<\/li>\n<li>Electrical Circuit (for lumped parameters)<\/li>\n<li>Solid-Shell connection (for the diaphragm and voice coil)<\/li>\n<li>Acoustic-Structure boundary x2 (couples the diaphragm and voice coil to the air)<\/li>\n<\/ul>\n<p>The lumped motor of the speaker couples the voice coil impedance as well as the (static) BL value found in the magnetic study to the force on the voice coil in the mechanical study using the relation<\/p>\n<p>Force = BL*i<\/p>\n<p>Feedback to the motor is ensured via the voltage source with the voltage defined as BL*v0, with v0 being the voice coil velocity.<\/p>\n<\/div><\/section><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-a0uiw-2-acec455c0fdff93bcdacf1dfc978f2be\">\n#top .flex_column.av-a0uiw-2-acec455c0fdff93bcdacf1dfc978f2be{\nmargin-top:50px;\nmargin-bottom:0px;\n}\n.flex_column.av-a0uiw-2-acec455c0fdff93bcdacf1dfc978f2be{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n.responsive #top #wrap_all .flex_column.av-a0uiw-2-acec455c0fdff93bcdacf1dfc978f2be{\nmargin-top:50px;\nmargin-bottom:0px;\n}\n<\/style>\n<div  class='flex_column av-a0uiw-2-acec455c0fdff93bcdacf1dfc978f2be av_one_half  avia-builder-el-51  el_after_av_one_half  el_before_av_one_half  flex_column_div av-zero-column-padding  '     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-l9ia7g82-c0cec8e06cae2217a5fd2f9ee36a8bd8\">\n.avia-image-container.av-l9ia7g82-c0cec8e06cae2217a5fd2f9ee36a8bd8 img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-l9ia7g82-c0cec8e06cae2217a5fd2f9ee36a8bd8 .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-image-container av-l9ia7g82-c0cec8e06cae2217a5fd2f9ee36a8bd8 av-styling- avia-align-center  avia-builder-el-52  el_before_av_textblock  avia-builder-el-first '   itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><img decoding=\"async\" fetchpriority=\"high\" class='wp-image-727 avia-img-lazy-loading-not-727 avia_image ' src=\"https:\/\/owolff.com\/wp-content\/uploads\/2022\/10\/Comsol_acoustic_analysis_a_1.jpeg\" alt='' title='Comsol_acoustic_analysis_a_1'  height=\"394\" width=\"500\"  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/owolff.com\/wp-content\/uploads\/2022\/10\/Comsol_acoustic_analysis_a_1.jpeg 500w, https:\/\/owolff.com\/wp-content\/uploads\/2022\/10\/Comsol_acoustic_analysis_a_1-300x236.jpeg 300w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><\/div><\/div><\/div><br \/>\n<section  class='av_textblock_section av-l9ia7umf-1-2fe343317fe31f321ddd9ed1f1e000a0 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p style=\"text-align: center;\"><em>Example of tuning the acoustics of an earphone by blocking leakage holes and reducing front volume using sticky tack.<\/em><\/p>\n<\/div><\/section><\/p><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-kp1jk-3f57a702e953db372f4d26dfd4ed67ef\">\n.flex_column.av-kp1jk-3f57a702e953db372f4d26dfd4ed67ef{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-kp1jk-3f57a702e953db372f4d26dfd4ed67ef av_one_half  avia-builder-el-54  el_after_av_one_half  el_before_av_one_half  first flex_column_div av-zero-column-padding  column-top-margin'     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-l9iaa0u0-1109840971858b69624cd9c60dee7bb4\">\n.avia-image-container.av-l9iaa0u0-1109840971858b69624cd9c60dee7bb4 img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-l9iaa0u0-1109840971858b69624cd9c60dee7bb4 .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-image-container av-l9iaa0u0-1109840971858b69624cd9c60dee7bb4 av-styling- avia_animated_image av-animated-when-visible-95 pop-up avia-align-center  avia-builder-el-55  el_before_av_textblock  avia-builder-el-first '   itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><img decoding=\"async\" fetchpriority=\"high\" class='wp-image-726 avia-img-lazy-loading-not-726 avia_image ' src=\"https:\/\/owolff.com\/wp-content\/uploads\/2022\/10\/Comsol_impedance_a.jpeg\" alt='' title='Comsol_impedance_a'  height=\"394\" width=\"500\"  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/owolff.com\/wp-content\/uploads\/2022\/10\/Comsol_impedance_a.jpeg 500w, https:\/\/owolff.com\/wp-content\/uploads\/2022\/10\/Comsol_impedance_a-300x236.jpeg 300w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><\/div><\/div><\/div><br \/>\n<section  class='av_textblock_section av-l9iaajei-ef1e1a1a811ffee42097a49bf53b9937 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p style=\"text-align: center;\"><i>Simulated impedance curve shows very good agreement with test results. The rear hole resonance is visible at around 7.7 kHz due to the feedback to the lumped motor.<\/i><\/p>\n<\/div><\/section><\/p><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-e9xbs-9e20aa83a0da5ea707ced54fe9f1a848\">\n.flex_column.av-e9xbs-9e20aa83a0da5ea707ced54fe9f1a848{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-e9xbs-9e20aa83a0da5ea707ced54fe9f1a848 av_one_half  avia-builder-el-57  el_after_av_one_half  avia-builder-el-last  flex_column_div av-zero-column-padding  column-top-margin'     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-l9iaa9vv-e08bc03cf880b0645c58771de426e3e1\">\n.avia-image-container.av-l9iaa9vv-e08bc03cf880b0645c58771de426e3e1 img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-l9iaa9vv-e08bc03cf880b0645c58771de426e3e1 .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-image-container av-l9iaa9vv-e08bc03cf880b0645c58771de426e3e1 av-styling- avia_animated_image av-animated-when-visible-95 pop-up avia-align-center  avia-builder-el-58  el_before_av_textblock  avia-builder-el-first '   itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><img decoding=\"async\" fetchpriority=\"high\" class='wp-image-725 avia-img-lazy-loading-not-725 avia_image ' src=\"https:\/\/owolff.com\/wp-content\/uploads\/2022\/10\/Comsol_SPL_a.jpeg\" alt='' title='Comsol_SPL_a'  height=\"394\" width=\"500\"  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/owolff.com\/wp-content\/uploads\/2022\/10\/Comsol_SPL_a.jpeg 500w, https:\/\/owolff.com\/wp-content\/uploads\/2022\/10\/Comsol_SPL_a-300x236.jpeg 300w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><\/div><\/div><\/div><br \/>\n<section  class='av_textblock_section av-l9iaaq3b-720c75319bbdf5582d176835d57e7c3f '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p style=\"text-align: center;\"><i>The sensitivity plot also shows very good agreement with the measurement. There are some losses in the rear holes (resonance around. 7.7kHz) that are not included in the basic Pressure acoustic analysis. To simulate theses losses, a Thermoviscous Acoustics study could be used for high precision. Alternatively a simpler \u201cresistive\u201d impedance could be applied to the rear holes.<\/i><\/p>\n<\/div><\/section><\/p><\/div><\/div><\/div><\/div><!-- close content main div --><\/div><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-4e37a-0099f3f5d16cd070cfbae45e2fd4e7a2\">\n.avia-section.av-4e37a-0099f3f5d16cd070cfbae45e2fd4e7a2{\nbackground-color:#ffffff;\nbackground-image:unset;\n}\n<\/style>\n<div id='av_section_7'  class='avia-section av-4e37a-0099f3f5d16cd070cfbae45e2fd4e7a2 main_color avia-section-default avia-no-border-styling  avia-builder-el-60  el_after_av_section  avia-builder-el-last  avia-bg-style-parallax container_wrap sidebar_right'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-small alpha units'><div class='post-entry post-entry-type-page post-entry-720'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" 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