{"id":396458,"date":"2024-12-05T14:55:13","date_gmt":"2024-12-05T14:55:13","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/396458\/"},"modified":"2024-12-05T16:43:52","modified_gmt":"2024-12-05T16:43:52","slug":"396458","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/396458\/","title":{"rendered":"Reply To: Natural Frequencies Anslysis"},"content":{"rendered":"<p>&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p class=&#8221;&rdquo;&rdquo;&rdquo;MsoNormal&rdquo;&rdquo;&rdquo;&#8221;&gt;Hi&lt;\/p&gt;&lt;p class=&#8221;&rdquo;&rdquo;&rdquo;MsoNormal&rdquo;&rdquo;&rdquo;&#8221;&gt;&lsquo;I guess the max deformation in the model is 1.1895&Prime;, when the Natural Frequency is 87.653Hz, Am I right or not?&rsquo;&lt;\/p&gt;&lt;p class=&#8221;&rdquo;&rdquo;&rdquo;MsoNormal&rdquo;&rdquo;&rdquo;&#8221;&gt;&nbsp;&lt;\/p&gt;&lt;p class=&#8221;&rdquo;&rdquo;&rdquo;MsoNormal&rdquo;&rdquo;&rdquo;&#8221;&gt;Yes that is correct, 87.653 Hz is the natural frequency of this natural mode &ndash; but have in mind that the displacement values (1.1895 here say) for that frequency\/mode are normalized\/scaled eigen vectors\/modes. So the absolute\/exact values (1.1895 inch) are not of importance. See here for&nbsp; discussion on this: https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/unrealistically-large-deformation-modal-analysis\/&lt;\/p&gt;&lt;p class=&#8221;&rdquo;&rdquo;&rdquo;MsoNormal&rdquo;&rdquo;&rdquo;&#8221;&gt;&nbsp;&lt;\/p&gt;&lt;p class=&#8221;&rdquo;&rdquo;&rdquo;MsoNormal&rdquo;&rdquo;&rdquo;&#8221;&gt;The absolute\/actual value of the displacement\/stress is only meaningful when we apply a force later in a harmonic analysis say, and look at the actual response of this structure due to this force.&lt;\/p&gt;&lt;p class=&#8221;&rdquo;&rdquo;&rdquo;MsoNormal&rdquo;&rdquo;&rdquo;&#8221;&gt;&nbsp;&lt;\/p&gt;&lt;p class=&#8221;&rdquo;&rdquo;&rdquo;MsoNormal&rdquo;&rdquo;&rdquo;&#8221;&gt;For all these details see our free courses on modal and dynamic analysis:&lt;\/p&gt;&lt;p class=&#8221;&rdquo;&rdquo;&rdquo;MsoNormal&rdquo;&rdquo;&rdquo;&#8221;&gt;https:\/\/innovationspace.ansys.com\/product\/modal-analysis-in-ansys-mechanical\/&lt;\/p&gt;&lt;p class=&#8221;&rdquo;&rdquo;&rdquo;MsoNormal&rdquo;&rdquo;&rdquo;&#8221;&gt;https:\/\/innovationspace.ansys.com\/product\/intro-to-modal-based-methods\/&lt;\/p&gt;&lt;p class=&#8221;&rdquo;&rdquo;&rdquo;MsoNormal&rdquo;&rdquo;&rdquo;&#8221;&gt;All the best&lt;\/p&gt;&lt;p class=&#8221;&rdquo;&rdquo;&rdquo;MsoNormal&rdquo;&rdquo;&rdquo;&#8221;&gt;Erik&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-396458","reply","type-reply","status-publish","hentry"],"aioseo_notices":[],"acf":[],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies\/396458","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":3,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies\/396458\/revisions"}],"predecessor-version":[{"id":396487,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies\/396458\/revisions\/396487"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=396458"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}