{"id":6354,"date":"2020-08-05T16:23:37","date_gmt":"2020-08-05T14:23:37","guid":{"rendered":"http:\/\/neu.ski-consult.de\/?page_id=6354"},"modified":"2023-11-16T15:29:15","modified_gmt":"2023-11-16T14:29:15","slug":"wirbelerregte-querschwingung","status":"publish","type":"page","link":"https:\/\/ski-consult.de\/en\/taetigkeitsbreiche\/strukturanalysen\/wirbelerregte-querschwingung\/","title":{"rendered":"Vortex induced vibrations"},"content":{"rendered":"<div data-elementor-type=\"wp-page\" data-elementor-id=\"6354\" class=\"elementor elementor-6354\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-54b6047 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"54b6047\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-1d0d95a\" data-id=\"1d0d95a\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-d2ca919 elementor-widget elementor-widget-heading\" data-id=\"d2ca919\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Vortex induced vibrations<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-96746a6 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"96746a6\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-8cd6d54\" data-id=\"8cd6d54\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-bf489bc elementor-widget elementor-widget-text-editor\" data-id=\"bf489bc\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"main-content\">\n<div class=\"content\">\n<div id=\"c881\" class=\"csc-default\">\n<div class=\"csc-textpic-text\">\n<div class=\"csc-textpic-text\">\n<div class=\"csc-textpic-text\">\n<div class=\"csc-textpic-text\">\n<p class=\"bodytext\">It comes to&nbsp;<a class=\"internal-link\" title=\"damage accumulation hypothesis\" href=\"https:\/\/ski-consult.de\/en\/wirbelerregte-querschwingung\/\">vortex induced vibrations<\/a>, when on the opposite sides of a structure alternating vortices peel off. If the excitation by the wind lies in the frequency range of the structure,&nbsp;<a class=\"internal-link\" title=\"damage accumulation hypothesis\" href=\"https:\/\/ski-consult.de\/en\/dynamische-strukturanalysen\/\">resonance effects<\/a>&nbsp;and a swaying of the vibrations can occur at right angles to the wind.<span style=\"letter-spacing: 0px;\">&nbsp;<\/span><\/p><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0d55cb7 elementor-widget elementor-widget-text-editor\" data-id=\"0d55cb7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"main-content\"><div class=\"content\"><div id=\"c881\" class=\"csc-default\"><div class=\"csc-textpic-text\"><div class=\"csc-textpic-text\"><p class=\"bodytext\">This phenomenon can occur particularly in tall, slender structures with a smooth surface. The main influencing factors are the stiffness of the structure  (<a class=\"internal-link\" title=\"damage accumulation hypothesis\" href=\"https:\/\/ski-consult.de\/en\/dynamische-strukturanalysen\/\">natural frequency<\/a>\u00a0as a function of mass distribution), the shape and arrangement of the cross-section (round, square, polygon; series arrangement, standalone) and the peculiarities of the structure.<\/p><\/div><\/div><\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-c583ffa elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"c583ffa\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-7e70ed0\" data-id=\"7e70ed0\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-b24c45c elementor-widget elementor-widget-text-editor\" data-id=\"b24c45c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"main-content\"><div class=\"content\"><div id=\"c881\" class=\"csc-default\"><div class=\"csc-textpic-text\"><div class=\"csc-textpic-text\"><p class=\"bodytext\"><span style=\"letter-spacing: 0px;\">The vortex shedding occurs above a certain site-specific wind speed. As a rule, the critical wind speed is a frequently occurring speed. The number of oscillation cycles and the resulting bending stress play a role relevant to design when determining the structure in the\u00a0<\/span><a class=\"internal-link\" style=\"background-color: #ffffff; letter-spacing: 0px;\" title=\"damage accumulation hypothesis\" href=\"https:\/\/ski-consult.de\/en\/taetigkeitsbreiche\/strukturanalysen\/ermuedung\/\">fatigue limit state<\/a><span style=\"letter-spacing: 0px;\">\u00a0.<\/span><\/p><\/div><\/div><\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0f4d33f elementor-widget elementor-widget-image\" data-id=\"0f4d33f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"438\" src=\"https:\/\/ski-consult.de\/wp-content\/uploads\/2020\/08\/csm_Wirbelerregte_Querschwingungen_2751d73a7b.jpg\" class=\"attachment-large size-large wp-image-6360\" alt=\"\" srcset=\"https:\/\/ski-consult.de\/wp-content\/uploads\/2020\/08\/csm_Wirbelerregte_Querschwingungen_2751d73a7b.jpg 800w, https:\/\/ski-consult.de\/wp-content\/uploads\/2020\/08\/csm_Wirbelerregte_Querschwingungen_2751d73a7b-300x164.jpg 300w, https:\/\/ski-consult.de\/wp-content\/uploads\/2020\/08\/csm_Wirbelerregte_Querschwingungen_2751d73a7b-768x420.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Principle of the vortex-excited transverse vibrations\n<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-579232d\" data-id=\"579232d\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-9b93781 elementor-widget elementor-widget-image\" data-id=\"9b93781\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"761\" height=\"600\" src=\"https:\/\/ski-consult.de\/wp-content\/uploads\/2020\/08\/csm_EF-Betonschaft_52237b4979.jpg\" class=\"attachment-large size-large wp-image-6359\" alt=\"\" srcset=\"https:\/\/ski-consult.de\/wp-content\/uploads\/2020\/08\/csm_EF-Betonschaft_52237b4979.jpg 761w, https:\/\/ski-consult.de\/wp-content\/uploads\/2020\/08\/csm_EF-Betonschaft_52237b4979-300x237.jpg 300w\" sizes=\"(max-width: 761px) 100vw, 761px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Natural frequency analysis of a concrete shaft with oscillation shape (overshoot)\n<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-552c4de elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"552c4de\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-7f956ee\" data-id=\"7f956ee\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-bbde052 elementor-widget elementor-widget-text-editor\" data-id=\"bbde052\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"main-content\"><div class=\"content\"><div id=\"c881\" class=\"csc-default\"><div class=\"csc-textpic-text\"><div class=\"csc-textpic-text\"><p class=\"bodytext\">Using the calculation formulas in DIN EN 1991-1-4 it is possible to determine the occurring bending moments of the structure. Furthermore, a corresponding number of cycles can be determined. These values can be used to carry out a\u00a0<a class=\"internal-link\" title=\"damage accumulation hypothesis\" href=\"https:\/\/ski-consult.de\/en\/taetigkeitsbreiche\/strukturanalysen\/ermuedung\/\">fatigue life analysis<\/a>\u00a0of the structure.<\/p><p class=\"bodytext\">For\u00a0<a class=\"internal-link\" title=\"damage accumulation hypothesis\" href=\"https:\/\/ski-consult.de\/en\/kleinwindenergieanlagen\/\">substructure<\/a>\u00a0, the DIBt guideline stipulates that if the damage caused by transverse vibrations is less than 10% of the total damage over the service life, this does not have to be taken into account in the actual fatigue calculation.<\/p><p class=\"bodytext\">For chimneys, the only fatigue load is the swirled lateral vibrations.\u00a0<\/p><\/div><\/div><\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-d55d3b5 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"d55d3b5\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-49f8b8d\" data-id=\"49f8b8d\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-1124db3 elementor-widget elementor-widget-image\" data-id=\"1124db3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"423\" height=\"600\" src=\"https:\/\/ski-consult.de\/wp-content\/uploads\/2020\/08\/csm_Eigenform_01_2149891145.jpg\" class=\"attachment-large size-large wp-image-6358\" alt=\"\" srcset=\"https:\/\/ski-consult.de\/wp-content\/uploads\/2020\/08\/csm_Eigenform_01_2149891145.jpg 423w, https:\/\/ski-consult.de\/wp-content\/uploads\/2020\/08\/csm_Eigenform_01_2149891145-212x300.jpg 212w\" sizes=\"(max-width: 423px) 100vw, 423px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Deformation of the tower due to vortex induced vibtrations\n<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-c72c08b\" data-id=\"c72c08b\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-83da68a elementor-widget elementor-widget-image\" data-id=\"83da68a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"423\" height=\"600\" src=\"https:\/\/ski-consult.de\/wp-content\/uploads\/2020\/08\/csm_Moment_01_d03e7eda8b.jpg\" class=\"attachment-large size-large wp-image-6357\" alt=\"\" srcset=\"https:\/\/ski-consult.de\/wp-content\/uploads\/2020\/08\/csm_Moment_01_d03e7eda8b.jpg 423w, https:\/\/ski-consult.de\/wp-content\/uploads\/2020\/08\/csm_Moment_01_d03e7eda8b-212x300.jpg 212w\" sizes=\"(max-width: 423px) 100vw, 423px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Bending moments of the tower due to vortex induced vibtrations\n<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-7c358d6\" data-id=\"7c358d6\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-9e2b72b elementor-widget elementor-widget-image\" data-id=\"9e2b72b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"465\" height=\"600\" src=\"https:\/\/ski-consult.de\/wp-content\/uploads\/2020\/08\/csm_Scruton-Wendel_2bf67c1690.jpg\" class=\"attachment-large size-large wp-image-6356\" alt=\"\" srcset=\"https:\/\/ski-consult.de\/wp-content\/uploads\/2020\/08\/csm_Scruton-Wendel_2bf67c1690.jpg 465w, https:\/\/ski-consult.de\/wp-content\/uploads\/2020\/08\/csm_Scruton-Wendel_2bf67c1690-233x300.jpg 233w\" sizes=\"(max-width: 465px) 100vw, 465px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Scruton-helix\n<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-128ebad elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"128ebad\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-a025485\" data-id=\"a025485\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-428d72e elementor-widget elementor-widget-text-editor\" data-id=\"428d72e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"bodytext\">Due to the swirl-excited transverse vibrations, large base moments can occur in the support area. Unanchored constructions can be in danger of tipping in the assembled state. If this is the case, it must be ensured for this construction phase by weather forecasts that the critical wind speed at which the transverse vibrations can occur is not reached for the period of the hazardous installation section.<\/p><p class=\"bodytext\">One way of temporarily or permanently preventing lateral vibrations without having to change the main load-bearing structure is to install aerodynamic interference measures in the area of the effective length of the lateral vibrations. The so-called vortex removers are profiles that are placed in the upper part of the structures to prevent the vertebrae from continuously loosening over the height. They ensure that the flow is detached in different directions, so that there is no alternating separation.\u00a0<\/p><p class=\"bodytext\">An example of such solutions for towers\/chimneys is the SCRUTON coils, which are used most frequently. These are three-way fault bars (no lattice strips), which are often installed helix-like around the structure in the upper third.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-1eff574 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"1eff574\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-421f301\" data-id=\"421f301\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-e954b96 elementor-widget elementor-widget-heading\" data-id=\"e954b96\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Our services<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-130e4b7 elementor-widget elementor-widget-text-editor\" data-id=\"130e4b7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"main-content\"><div class=\"content\"><div id=\"c881\" class=\"csc-default\"><div class=\"csc-textpic-text\"><div class=\"csc-textpic-text\"><p class=\"bodytext\">The\u00a0<a class=\"internal-link\" style=\"background-color: #ffffff;\" title=\"damage accumulation hypothesis\" href=\"https:\/\/ski-consult.de\/en\/\">SKI Ingenieurges. mbH<\/a>\u00a0can carry out static and dynamic structural analyses within the framework of structural design. These essentially comprise the following structural analyses:<\/p><ul><li><a class=\"internal-link\" style=\"color: #0071b7;\" title=\"damage accumulation hypothesis\" href=\"https:\/\/ski-consult.de\/en\/finite-element-berechnungen\/\">Modeling of the structure<\/a>\u00a0(in steel and reinforced concrete construction)<\/li><li>Determination of mass distribution<\/li><li><a class=\"internal-link\" title=\"damage accumulation hypothesis\" href=\"https:\/\/ski-consult.de\/en\/dynamische-strukturanalysen\/\">Natural frequency<\/a>\u00a0analysis of the structure<\/li><li>Verification of turbulent transverse vibrations according to DIN EN 1991-1-4<\/li><li><a class=\"internal-link\" title=\"damage accumulation hypothesis\" href=\"https:\/\/ski-consult.de\/en\/taetigkeitsbreiche\/onshore-windenergieanlagen\/flach-und-tiefgruendung\/\">Geotechnical checks\u00a0<\/a>against tilting due to lateral vibrations<\/li><li><a class=\"internal-link\" title=\"damage accumulation hypothesis\" href=\"https:\/\/ski-consult.de\/en\/taetigkeitsbreiche\/strukturanalysen\/ermuedung\/\">Fatgiue analysis<\/a>\u00a0of the structure due to lateral vibrations<\/li><li>Assessment of the hazard of a structure against swirling transverse vibrations<\/li><li>Optimization of structures against turbulence-excited transverse oscillations<\/li><\/ul><\/div><\/div><\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Wirbelerregte Querschwingung Es kommt zu&nbsp;wirbelerregten Querschwingungen, wenn sich auf den gegen\u00fcberliegenden Seiten einer Struktur alternierend Wirbel abl\u00f6sen. Liegt die Anregung durch den Wind in dem Frequenzbereich der Struktur, kann es zu&nbsp;Resonanzeffekten&nbsp;und einem Aufschaukeln der Schwingungen quer zum Wind kommen.&nbsp; Dieses Ph\u00e4nomen kann besonders bei hohen schlanken Bauwerken mit einer glatten Oberfl\u00e4che auftreten. Die wesentlichen Einflussfaktoren&#8230;<\/p>","protected":false},"author":4,"featured_media":0,"parent":6281,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-6354","page","type-page","status-publish","hentry","no-post-thumbnail"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Wirbelerregte Querschwingung &#8226; SKI Ingenieurges. mbH<\/title>\n<meta name=\"description\" content=\"Wirbelerregte Querschwingung &#8226; SKI kann Berechnungen inkl. 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