{"id":392301,"date":"2024-10-31T18:17:03","date_gmt":"2024-10-31T18:17:03","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/prescribed-motion-set_-displacement\/"},"modified":"2024-10-31T18:17:03","modified_gmt":"2024-10-31T18:17:03","slug":"prescribed-motion-set_-displacement","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/prescribed-motion-set_-displacement\/","title":{"rendered":"Prescribed motion set_ displacement"},"content":{"rendered":"<p>&lt;p&gt;Hello everyone&lt;\/p&gt;&lt;p&gt;I am trying to model a column of soil consisting of 100 equal solid elements, where the nodes of each elevation are constarined in all directions of x,y,and z to behave completely in shear. The materials are elastic and all are the same.I also fix he bottom of my column in vertical direction. When I apply prescribed_motion_set at the bottom of the soil column (in x or horizontal direction) and my motion would be displacement, after doing the analysis, the nodout shows significantly crazy values for acceleration at the bottom (where I apply the dispalcement as my input), however, the other nodes have rational acceleration records.&lt;\/p&gt;&lt;p&gt;Does anybody knows what am I missing?&lt;\/p&gt;&lt;p&gt;I am using ls-prepost for my simulation.&lt;\/p&gt;&lt;p&gt;Thanks&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-392301","topic","type-topic","status-publish","hentry","topic-tag-ansys-ls-dyna-1"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["446916","471944"],"_bbp_author_ip":["128.62.19.69"],"_btv_view_count":["404"],"_bbp_topic_status":["unanswered"],"_bbp_topic_id":["392301"],"_bbp_forum_id":["27814"],"_bbp_engagement":["446916","471944"],"_bbp_voice_count":["2"],"_bbp_reply_count":["5"],"_bbp_last_reply_id":["393400"],"_bbp_last_active_id":["393400"],"_bbp_last_active_time":["2024-11-08 22:05:07"]},"test":"mostafamunr-edu"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/392301","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/392301\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=392301"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}