{"id":388679,"date":"2024-10-08T23:53:24","date_gmt":"2024-10-08T23:53:24","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/mass-spring-system-does-not-move-properly-when-the-spring-is-non-linear\/"},"modified":"2024-10-08T23:54:20","modified_gmt":"2024-10-08T23:54:20","slug":"mass-spring-system-does-not-move-properly-when-the-spring-is-non-linear","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/mass-spring-system-does-not-move-properly-when-the-spring-is-non-linear\/","title":{"rendered":"Mass-spring system does not move properly when the spring is non-linear"},"content":{"rendered":"<p>&lt;p&gt;&lt;p&gt;I&#8217;m currently analysing the dynamics of a beam coupled with a spring-mass system. The spring can be linear or not. However, as shown in the attached pictures, for some reason the mass will not move when the non-linear spring is set. I did not set any constraint for the mass. The Transient Analysis was set with Weak Springs and Large Deflection on. Does anyone know how can I solve that? I need the move to move freely. When I perform a linear analysis for the linear spring, the spring-mass behaves as I need. Thanks in advance.&lt;\/p&gt;&lt;p&gt;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/10\/08-10-2024-1728431415-Figure 2.jpg\" alt=\"\" width=\"1199\" height=\"548\" \/>&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/10\/08-10-2024-1728431437-Figure 1.jpg\" alt=\"\" \/>&lt;\/p&gt;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-388679","topic","type-topic","status-publish","hentry","topic-tag-spring","topic-tag-transient-structural"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["348523","20905"],"_bbp_author_ip":["2804:14c:36:8471:57d:82:5477:97b1"],"_btv_view_count":["229"],"_bbp_topic_status":["unanswered"],"_edit_last":["348523"],"_bbp_revision_log":["a:1:{i:388680;a:2:{s:6:\"author\";i:348523;s:6:\"reason\";s:0:\"\";}}"],"_bbp_topic_id":["388679"],"_bbp_forum_id":["27796"],"_bbp_engagement":["20905","348523"],"_bbp_voice_count":["2"],"_bbp_reply_count":["5"],"_bbp_last_reply_id":["390928"],"_bbp_last_active_id":["390928"],"_bbp_last_active_time":["2024-10-22 21:02:34"]},"test":"asceduardoalumni-usp-br"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/388679","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":1,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/388679\/revisions"}],"predecessor-version":[{"id":388680,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/388679\/revisions\/388680"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=388679"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}