{"id":248755,"date":"2023-02-06T14:24:03","date_gmt":"2023-02-06T14:24:03","guid":{"rendered":"\/forum\/forums\/topic\/how-to-evaluate-random-vibe-results-taking-into-account-the-pre-stressed-enviro\/"},"modified":"2023-02-06T14:24:03","modified_gmt":"2023-02-06T14:24:03","slug":"how-to-evaluate-random-vibe-results-taking-into-account-the-pre-stressed-enviro","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/how-to-evaluate-random-vibe-results-taking-into-account-the-pre-stressed-enviro\/","title":{"rendered":"How to evaluate Random Vibe results taking into account the pre-stressed enviro"},"content":{"rendered":"<p>Hi,<\/p>\n<p>Is it possible to estimate the total stress on an object undergoing random vibration by adding the random vibe stress to the analysis&#8217; pre-stress? For example if I have a cantilevered beam with 17,000 psi at the fixed support in a static structural analysis with standard gravity, and my random vibration 3sigma stress is 1,000 psi, can I say that the total 3sigma stress is 18,000 psi? If so, is this a conservative estimate or do I need to add any additional boundary conditions to make it more accurate?<\/p>\n<p>Thanks!<\/p>\n","protected":false},"template":"","class_list":["post-248755","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=\"Hi,Is it possible to estimate the total stress on an object undergoing random vibration by adding the random vibe stress to the analysis&#039; pre-stress? 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