{"id":250768,"date":"2023-02-21T12:52:55","date_gmt":"2023-02-21T12:52:55","guid":{"rendered":"\/forum\/forums\/reply\/250768\/"},"modified":"2023-02-21T12:52:55","modified_gmt":"2023-02-21T12:52:55","slug":"250768","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/250768\/","title":{"rendered":"Reply To: How can i apply mechanical vibrations of a known power spectrum ?"},"content":{"rendered":"<p>&lt;p&gt;Could you elaborate on what do you mean with &#8220;<em>For the vibrational force, i used tabulated pressure vs. time data &lt;span style=&#8221;text-decoration: underline;&#8221;&gt;at one frequency&lt;\/span&gt;.<\/em>&#8220;.&nbsp; Do you mean you used a so called time history, with a given sampling frequency? because to me it is unclear what does &#8220;<em>at one frequency<\/em>&#8221; mean.&nbsp; The time history, if sufficiently sampled, will contain all frequencies up to the Nyquist frequency.&nbsp; With time history I mean a long list of couples of data points: for example t=0, p=p0; t=0.001, p=p1, and so on&#8230;&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;I am not familiar wiht FSI. But for simply mechanical analysis the input of a PSD as vibration excitation is certainly possible.&nbsp; Differently from a time history, a PSD is a statistical approach, though.&nbsp;&nbsp;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-250768","reply","type-reply","status-publish","hentry"],"aioseo_notices":[],"acf":[],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies\/250768","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/reply"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies\/250768\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=250768"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}