{"id":461028,"date":"2026-07-08T07:47:54","date_gmt":"2026-07-08T07:47:54","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/function-expression-for-force-based-on-joint-speed-in-ansys-motion\/"},"modified":"2026-07-08T07:47:54","modified_gmt":"2026-07-08T07:47:54","slug":"function-expression-for-force-based-on-joint-speed-in-ansys-motion","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/function-expression-for-force-based-on-joint-speed-in-ansys-motion\/","title":{"rendered":"Function Expression for Force based on Joint Speed in Ansys Motion,"},"content":{"rendered":"<p>&lt;div&gt;I am using Ansys Workbench Motion and need to define a force that dynamically updates based on a joint&#8217;s rotational speed during the solution (e.g., the force increases as the speed increases).&lt;\/div&gt;&lt;div&gt;&nbsp;&lt;\/div&gt;&lt;div&gt;Could you please advise on:&lt;\/div&gt;&lt;div&gt;&nbsp;&lt;\/div&gt;&lt;div&gt;What is the exact Function Expression syntax to extract a joint&#8217;s rotational speed in a specific direction (e.g., Z-axis)?&lt;\/div&gt;&lt;div&gt;&nbsp;&lt;\/div&gt;&lt;div&gt;How can I integrate this speed variable into a Force expression correctly?&lt;\/div&gt;&lt;div&gt;&nbsp;&lt;\/div&gt;&lt;div&gt;Any simple syntax examples would be highly appreciated.&lt;\/div&gt;&lt;div&gt;&nbsp;&lt;\/div&gt;&lt;div&gt;Best regards,&lt;\/div&gt;<\/p>\n","protected":false},"template":"","class_list":["post-461028","topic","type-topic","status-publish","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_forum_id":["311391"],"_bbp_topic_id":["461028"],"_bbp_subscription":["547083"],"_bbp_author_ip":["140.127.33.178"],"_bbp_last_reply_id":["0"],"_bbp_last_active_id":["461028"],"_bbp_last_active_time":["2026-07-08 07:47:54"],"_bbp_reply_count":["0"],"_bbp_reply_count_hidden":["0"],"_bbp_voice_count":["1"],"_bbp_engagement":["547083"],"_btv_view_count":["79"],"_bbp_topic_status":["unanswered"]},"test":"b10838033g4e-npust-edu-tw"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/461028","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\/461028\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=461028"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}