{"id":363287,"date":"2024-04-20T00:41:39","date_gmt":"2024-04-20T00:41:39","guid":{"rendered":"\/forum\/forums\/topic\/modal-results-not-responding-to-changing-pre-stress\/"},"modified":"2024-04-20T00:41:39","modified_gmt":"2024-04-20T00:41:39","slug":"modal-results-not-responding-to-changing-pre-stress","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/modal-results-not-responding-to-changing-pre-stress\/","title":{"rendered":"Modal Results not Responding to Changing Pre-Stress"},"content":{"rendered":"<p>I am trying to apply moment to a beam at one end and solve for vibration modes.<\/p>\n<p>Each time I change the moment load at the free end of the beam, the modal solution outputs the exact same frequencies for the 20 modes solved. (Almost as if it is not accounting for the pre stress at all)<\/p>\n<p>When I try the same with an axial tensile load, the solved frequencies increase with increased load. For some reason they do not when I apply moment. Any advice is appreciated, thank you<\/p>\n","protected":false},"template":"","class_list":["post-363287","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"I am trying to apply moment to a beam at one end and solve for vibration modes.Each time I change the moment load at the free end of the beam, the modal solution outputs the exact same frequencies for the 20 modes solved. 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