{"id":288034,"date":"2023-06-10T00:16:13","date_gmt":"2023-06-10T00:16:13","guid":{"rendered":"\/forum\/forums\/topic\/spring-boundary-conditions\/"},"modified":"2023-06-10T00:16:13","modified_gmt":"2023-06-10T00:16:13","slug":"spring-boundary-conditions","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/spring-boundary-conditions\/","title":{"rendered":"Spring Boundary Conditions"},"content":{"rendered":"<p>Hi Community,<\/p>\n<p>I have a problem defining a boundary condition that is not fixed or pinned. Instead, I want to assign a stiffness to the node. As shown in the figure below.<\/p>\n<p>In this figure, the rotational boundary condition is free. But the translation boundary condition is provided by a stiffness value.<\/p>\n<p>When I start doing this job, I think I could assign a spring aligned to the directions, which are not fixed. For example at point A, the vertical direction is fixed. At the same time, the x and z directions are semi-rigid.&nbsp; I thought I could create a line element and then change the element type to combin14 (which is a spring). But I don&#8217;t know how to do it.&nbsp; Is it possible to change the element type to combin14? Or, is there any other way to define these flexible boundary conditions?<\/p>\n<p>The second figure shows how other people do it (only for visualization, the model is not provided).<\/p>\n<p>&nbsp;<\/p>\n<p>Thanks,<\/p>\n<p>Xiao<\/p>\n<p><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/06\/10-06-2023-1686355593-Picture1.png\" alt=\"\"><\/p>\n<p><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/06\/10-06-2023-1686355946-Picture1.png\" alt=\"\"><\/p>\n","protected":false},"template":"","class_list":["post-288034","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["173800","3796","50680"],"_bbp_author_ip":["96.7.74.173"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["2597"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["288034"],"_bbp_forum_id":["27791"],"_bbp_engagement":["3796","50680","173800"],"_bbp_voice_count":["3"],"_bbp_reply_count":["4"],"_bbp_last_reply_id":["288619"],"_bbp_last_active_id":["288619"],"_bbp_last_active_time":["2023-06-14 02:42:08"]},"test":"xiao"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/288034","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\/288034\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=288034"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}