{"id":6189,"date":"2014-08-22T17:12:39","date_gmt":"2014-08-22T17:12:39","guid":{"rendered":"https:\/\/www.akustik-forschung.de\/test\/?p=6189"},"modified":"2021-03-08T08:37:07","modified_gmt":"2021-03-08T07:37:07","slug":"koerperschall-in-maschinen-und-strukturen","status":"publish","type":"post","link":"https:\/\/www.akustikforschung.de\/en\/leistungen\/maschinenakustik\/strukturanalyse\/koerperschall-in-maschinen-und-strukturen\/","title":{"rendered":"Structure-borne noise in machines and structures"},"content":{"rendered":"<p><a href=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2014\/01\/messung_schwingung_gleisaufbau_05_ed_ws-e1614961700540.jpg\" rel=\"gallery\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-6195 size-medium\" src=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2014\/01\/messung_schwingung_gleisaufbau_05_ed_ws-e1614961700540-300x216.jpg\" alt=\"Measurement of structure-borne sound with 3D acceleration sensors at the rail track during pass-by of railway vehicles\" width=\"300\" height=\"216\" srcset=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2014\/01\/messung_schwingung_gleisaufbau_05_ed_ws-e1614961700540-300x216.jpg 300w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2014\/01\/messung_schwingung_gleisaufbau_05_ed_ws-e1614961700540-640x460.jpg 640w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2014\/01\/messung_schwingung_gleisaufbau_05_ed_ws-e1614961700540-768x552.jpg 768w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2014\/01\/messung_schwingung_gleisaufbau_05_ed_ws-e1614961700540.jpg 800w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p>When machines and structures are mechanically excited, the induced vibration energy propagates in terms of structure-borne sound along both the excited structure and adjacent ones.<\/p>\n<p>At other positions, the structure-borne sound can be emitted as airborne sound again. Especially, in the range of the natural frequencies (eigenfrequencies) of the structure, the sound emission coefficient can become very large. This has to be kept in mind when optimizing machines with respect to a minimum sound emission.<\/p>\n<p><!--contentpartdivider--><\/p>\n<h4>Measurement of structure-borne sound and eigenfrequencies<\/h4>\n<p>To measure the vibration behavior of machines and other structures, among other things, the company offers the following services:<\/p>\n<ul>\n<li>measurement of vibration properties (operational vibration analysis) as well as propagation of structure-borne sound with 1D and 3D acceleration sensors and impedance sensors<\/li>\n<\/ul>\n<ul>\n<li>investigation of properties of machinery structures by application of experimental <a href=\"https:\/\/www.akustikforschung.de\/en\/leistungen\/maschinenakustik\/strukturanalyse\/modalanalyse\/\">modal analysis<\/a> (EMA) and operational modal analysis (OMA) respectively<\/li>\n<\/ul>\n<ul>\n<li>structural analysis of machines, devices and structural elements by application of transfer path analysis (TPA)<\/li>\n<\/ul>\n<h4>Modeling and optimization of vibration behavior and eigenfrequencies<\/h4>\n<p>We also support you to optimize the vibration behavior and the eigenfrequencies of machinery structures, especially with minimizing the propagation of structure-borne sound and the coefficient of sound emission as well as the vibration isolation of machines:<\/p>\n<ul>\n<li>numerical modeling of the vibrational behaviour of structures (determination of eigenfrequencies) by application of finite element method (<a href=\"https:\/\/www.akustikforschung.de\/en\/unternehmen\/know-how\/anwendungssoftware\/fem-finite-elemente-methode\/\">FEM<\/a>)<\/li>\n<\/ul>\n<ul>\n<li>design and optimization of structures with coatings and restrained intermediate layers for damping of structure-borne sound<\/li>\n<\/ul>\n<ul>\n<li>design of structure-borne sound isolation\/ vibration isolation by means of mass-spring-system<\/li>\n<\/ul>\n<p><!--contentpartdivider--><\/p>\n<p><!--\n\n[caption id=\"attachment_8460\" align=\"alignright\" width=\"300\"]<a href=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2014\/08\/numerische_berechnung_eigenfrequenz_maschinenstruktur_01_ws.png\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-8460\" src=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2014\/08\/numerische_berechnung_eigenfrequenz_maschinenstruktur_01_ws-300x225.png\" alt=\"numerical calculation and optimization of vibration behaviour of a machinery structure and determination of eigenfrequencies\" width=\"300\" height=\"225\" srcset=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2014\/08\/numerische_berechnung_eigenfrequenz_maschinenstruktur_01_ws-300x225.png 300w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2014\/08\/numerische_berechnung_eigenfrequenz_maschinenstruktur_01_ws-440x330.png 440w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2014\/08\/numerische_berechnung_eigenfrequenz_maschinenstruktur_01_ws.png 510w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a> Numerical modeling of vibration behaviour of a machinery structure as well as calculation of eigenfrequencies[\/caption]\n\n--><\/p>\n<div id=\"attachment_10195\" style=\"width: 310px\" class=\"wp-caption alignright\"><a href=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2018\/05\/strukturanalyse_02b_luefter_ws-e1614961831435.png\" rel=\"gallery\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-10195\" class=\"wp-image-10195 size-medium\" src=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2018\/05\/strukturanalyse_02b_luefter_ws-e1614961831435-300x156.png\" alt=\"Structural analysis of single components and assemply groups by numerical modeling of vibrational behaviour as well as calculation of natural frequencies\" width=\"300\" height=\"156\" srcset=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2018\/05\/strukturanalyse_02b_luefter_ws-e1614961831435-300x156.png 300w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2018\/05\/strukturanalyse_02b_luefter_ws-e1614961831435-768x400.png 768w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2018\/05\/strukturanalyse_02b_luefter_ws-e1614961831435-640x334.png 640w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2018\/05\/strukturanalyse_02b_luefter_ws-e1614961831435.png 800w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-10195\" class=\"wp-caption-text\">Structural analysis of fan by numerical modeling of vibrational behaviour as well as calculation of natural frequencies (Geometrie of Comsol Multiphysics GmbH)<\/p><\/div>\n<div id=\"attachment_10206\" style=\"width: 310px\" class=\"wp-caption alignright\"><a href=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2018\/05\/strukturanalyse_01b_Federbein.gif\" rel=\"gallery\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-10206\" class=\"wp-image-10206 size-full\" src=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2018\/05\/strukturanalyse_01b_Federbein.gif\" alt=\"Design of active assembly groups by simulation of dynamic vibrational behaviour of by means of finite element method (FEM)\" width=\"300\" height=\"225\" \/><\/a><p id=\"caption-attachment-10206\" class=\"wp-caption-text\">Design of spring leg by numerical simulation of dynamic vibrational behaviour by means of finite element method (FEM)<\/p><\/div>\n<p><a href=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2018\/05\/strukturanalyse_04_getriebe_ed_ws-e1614962361504.png\" rel=\"gallery\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-10191 size-medium\" src=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2018\/05\/strukturanalyse_04_getriebe_ed_ws-e1614962361504-300x253.png\" alt=\"Structural analysis of gear drive by numerical modeling of vibrational behaviour, propagation of structure-borne sound as well as calculation of natural frequencies\" width=\"300\" height=\"253\" srcset=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2018\/05\/strukturanalyse_04_getriebe_ed_ws-e1614962361504-300x253.png 300w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2018\/05\/strukturanalyse_04_getriebe_ed_ws-e1614962361504-768x648.png 768w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2018\/05\/strukturanalyse_04_getriebe_ed_ws-e1614962361504-640x540.png 640w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2018\/05\/strukturanalyse_04_getriebe_ed_ws-e1614962361504.png 791w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<div id=\"attachment_10190\" style=\"width: 310px\" class=\"wp-caption alignright\"><a href=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2018\/05\/strukturanalyse_05_getriebe_ed_ws-e1614962291614.png\" rel=\"gallery\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-10190\" class=\"wp-image-10190 size-medium\" src=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2018\/05\/strukturanalyse_05_getriebe_ed_ws-e1614962291614-300x270.png\" alt=\"Structural analysis of single components and assembly groups by numerical modeling of vibrational behaviour, propagation of structure-borne sound as well as calculation of natural frequencies\" width=\"300\" height=\"270\" srcset=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2018\/05\/strukturanalyse_05_getriebe_ed_ws-e1614962291614-300x270.png 300w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2018\/05\/strukturanalyse_05_getriebe_ed_ws-e1614962291614-768x690.png 768w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2018\/05\/strukturanalyse_05_getriebe_ed_ws-e1614962291614-640x575.png 640w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2018\/05\/strukturanalyse_05_getriebe_ed_ws-e1614962291614.png 807w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-10190\" class=\"wp-caption-text\">Structural analysis of gear drive by numerical modeling of vibrational behaviour as well as calculation of natural frequencies (Geometry of Comsol Multiphysics GmbH)<\/p><\/div>\n<p><div id=\"attachment_6196\" style=\"width: 310px\" class=\"wp-caption alignright\"><a href=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2014\/01\/messung_schwingung_fahrbahn_01_ed2_ws-e1614962499108.jpg\" rel=\"gallery\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-6196\" class=\"wp-image-6196 size-medium\" src=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2014\/01\/messung_schwingung_fahrbahn_01_ed2_ws-e1614962499108-300x347.jpg\" alt=\"Measurement of vibrations at a road surface for prediction of the sound emission of the road for mechanical excitation during pass-by of vehicle\" width=\"300\" height=\"347\" srcset=\"https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2014\/01\/messung_schwingung_fahrbahn_01_ed2_ws-e1614962499108-300x347.jpg 300w, https:\/\/www.akustikforschung.de\/wp-content\/uploads\/2014\/01\/messung_schwingung_fahrbahn_01_ed2_ws-e1614962499108.jpg 518w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-6196\" class=\"wp-caption-text\">Measurement of propagation of structure-borne sound at a road surface during pass-by of vehicle<\/p><\/div><\/p>","protected":false},"excerpt":{"rendered":"<p>When machines and structures are mechanically excited, the induced vibration energy propagates in terms of structure-borne sound along both the [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":6195,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[472,85,469,225,48,449,471,183,171,169,90,470],"class_list":["post-6189","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-strukturanalyse","tag-abstrahlgrad","tag-auslegung","tag-eigenfrequenzen","tag-fem","tag-korperschall","tag-korperschallisolation","tag-maschinen","tag-modalanalyse","tag-numerische-berechnung","tag-optimierung","tag-schallemission","tag-schwingverhalten","has-content-parts","content-parts-5"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>K\u00f6rperschall in Maschinen und Strukturen - Structure-borne noise<\/title>\n<meta name=\"description\" content=\"K\u00f6rperschall in Maschinen und Strukturen, Messung von 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