{"id":426410,"date":"2025-03-21T02:17:09","date_gmt":"2025-03-21T02:17:09","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/reaction-forces-to-balance-the-moments-of-a-lever-mechanism\/"},"modified":"2025-03-24T07:22:56","modified_gmt":"2025-03-24T07:22:56","slug":"reaction-forces-to-balance-the-moments-of-a-lever-mechanism","status":"answered","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/reaction-forces-to-balance-the-moments-of-a-lever-mechanism\/","title":{"rendered":"Reaction Forces to Balance the Moments of a Lever Mechanism."},"content":{"rendered":"<p>&lt;p&gt;Hello Forum,&lt;\/p&gt;&lt;p&gt;I have a Lever Mechanism in which i wanted to understand how much of force is needed to lift the lever. I did the RBD Analysis for this but the thing is, if i give displacement boundary condition for a certain time period the reaction forces are higher then the theoretical calculations. What i have understood is the reaction given by solver are to achieve the displacement over the given time period.&lt;\/p&gt;&lt;p&gt;Is there a way in which i can understand the reaction forces needed just to balance the lever as it lifts. One way of doing is performing a static analysis for specific orientation of lever and getting the reaction forces, but that time consuming. How can i do this in MBD Software.&nbsp;&nbsp;&lt;\/p&gt;&lt;p&gt;Just for the clarification, When the lever is at initail condition, i calculated the moments and thus reaction force needed is around 30KN and as it lifts up, it reduces and for the final position the reaction forces are 17KN. But if i give displacement boundary condition in MBD and try to see the reaction forces, the reaction forces are constant without any change in it. Is my understanding correct? These reaction forces are to maintain the motion and not just enough to balance the moment. How do i get reaction forces to balance the moments in MDB. (Preferably Ansys Motion).&lt;\/p&gt;&lt;p&gt;Thanks&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-426410","topic","type-topic","status-answered","hentry","topic-tag-ansysworkbench-ansys-staticstructural","topic-tag-ansys","topic-tag-ansysmotion","topic-tag-force-reaction","topic-tag-multibody-dynamics","topic-tag-rbd","topic-tag-rigid-body-dynamics","topic-tag-rigid-body-motion"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_forum_id":["27791"],"_bbp_topic_id":["426410"],"_bbp_subscription":["12466","240"],"_bbp_author_ip":["175.101.11.194"],"_bbp_last_reply_id":["426562"],"_bbp_last_active_id":["426562"],"_bbp_last_active_time":["2025-03-24 07:22:47"],"_bbp_reply_count":["3"],"_bbp_reply_count_hidden":["0"],"_bbp_voice_count":["2"],"_bbp_engagement":["12466","240"],"_btv_view_count":["225"],"_bbp_topic_status":["answered"]},"test":"zabee-ktelled-in"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/426410","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\/426410\/revisions"}],"predecessor-version":[{"id":426563,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/426410\/revisions\/426563"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=426410"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}