{"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":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"I&#039;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. 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I did not set any constraint for the mass. 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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\" \/>\n\t\t<meta name=\"twitter:image\" content=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/10\/08-10-2024-1728431415-Figure 2.jpg\" \/>\n\t\t<script type=\"application\/ld+json\" class=\"aioseo-schema\">\n\t\t\t{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/mass-spring-system-does-not-move-properly-when-the-spring-is-non-linear\\\/#breadcrumblist\",\"itemListElement\":[{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/#listItem\",\"name\":\"Topics\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/#listItem\",\"position\":2,\"name\":\"Topics\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/transient-structural\\\/#listItem\",\"name\":\"transient-structural\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/transient-structural\\\/#listItem\",\"position\":3,\"name\":\"transient-structural\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/transient-structural\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/mass-spring-system-does-not-move-properly-when-the-spring-is-non-linear\\\/#listItem\",\"name\":\"Mass-spring system does not move properly when the spring is non-linear\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/#listItem\",\"name\":\"Topics\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/mass-spring-system-does-not-move-properly-when-the-spring-is-non-linear\\\/#listItem\",\"position\":4,\"name\":\"Mass-spring system does not move properly when the spring is non-linear\",\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/transient-structural\\\/#listItem\",\"name\":\"transient-structural\"}}]},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/#organization\",\"name\":\"Ansys Learning Forum\",\"description\":\"Ansys Innovation Space\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/mass-spring-system-does-not-move-properly-when-the-spring-is-non-linear\\\/#webpage\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/mass-spring-system-does-not-move-properly-when-the-spring-is-non-linear\\\/\",\"name\":\"Mass-spring system does not move properly when the spring is non-linear | Ansys Learning Forum\",\"description\":\"I'm currently analysing the dynamics of a beam coupled with a spring-mass system. 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