{"id":313022,"date":"2023-10-24T12:11:08","date_gmt":"2023-10-24T12:11:08","guid":{"rendered":"\/forum\/forums\/reply\/313022\/"},"modified":"2023-10-24T13:00:39","modified_gmt":"2023-10-24T13:00:39","slug":"313022","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/313022\/","title":{"rendered":"Reply To: Transient structural analysis with initial displacement in workbench"},"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&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;Hi&lt;\/p&gt;&lt;p&gt;Please see the transient courses for instance the one I sent and try and understand that.&lt;\/p&gt;&lt;p&gt;Also make sure you understand the difference between Steps (You have 2 steps), and time step (which is dt in the time integration used of the equations of motion &ndash; I showed above how to determine that time step size ~ T_period\/10).&nbsp; You can search this online and get lots of help that way.&lt;\/p&gt;&lt;p&gt;The end time for step 1 could be say 1 s (does not matter since 1st step it is quasi-static movement of the tip up), and the 2nd dynamic step could be say 10 * T_period (T_per.=1\/freq., freq.=12 Hz for you) so you want to see 10 periods of vibration say or more perhaps say 100*T_per., thus the end of that 2nd step is = &lt;br&gt;end of first step (say 1s) + 10*T_per.&nbsp;&lt;\/p&gt;&lt;p&gt;Leave also time integration on for both steps (makes steps dynamic so considering mass, damping and stiffness matrix so full dynamics equations of motion&nbsp;&lt;\/p&gt;&lt;p&gt;Also the help manual contains info on the theory of transient dynamics.&lt;\/p&gt;&lt;p&gt;So go through material on transient dynamics and linear dynamics.&lt;\/p&gt;&lt;p&gt;All the best of luck.&lt;\/p&gt;&lt;p&gt;Erik&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p class=&#8221;&rdquo;&rdquo;MsoNormal&rdquo;&rdquo;&#8221;&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-313022","reply","type-reply","status-publish","hentry"],"aioseo_notices":[],"acf":[],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies\/313022","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\/313022\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=313022"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}