{"id":394773,"date":"2024-11-21T12:58:00","date_gmt":"2024-11-21T12:58:00","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/moment-reaction-probe-with-large-deformation\/"},"modified":"2025-09-22T08:54:07","modified_gmt":"2025-09-22T08:54:07","slug":"moment-reaction-probe-with-large-deformation","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/moment-reaction-probe-with-large-deformation\/","title":{"rendered":"Moment Reaction probe with Large deformation"},"content":{"rendered":"<p>&lt;p&gt;Hi,&nbsp;&lt;\/p&gt;&lt;p&gt;I would like to read the reaction moment probe from the contact in a large displacement analysis. When I use the summation method: orientation system or centroid, the moment is read relative to the undisplaced centroid of the contact. I need the summation point to be at the centroid of the displaced contact. Is there any way to do this automatically? The only solution I have found is to move the coordinate system exactly by the value the geometry moves, but this is too labor-intensive to do for many&nbsp;contacts and many timesteps.&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;When the summation point does not move with the mesh, this results in a false reading of the moments.&nbsp;&lt;\/p&gt;&lt;p&gt;&nbsp;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/11\/21-11-2024-1732193809-mceclip3.png\" \/>&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/11\/21-11-2024-1732193847-mceclip4.png\" \/>&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-394773","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["241700","20905","461937","598175"],"_bbp_author_ip":["46.205.205.33"],"_btv_view_count":["948"],"_bbp_topic_status":["unanswered"],"_bbp_topic_id":["394773"],"_bbp_forum_id":["27796"],"_bbp_voice_count":["3"],"_bbp_reply_count":["4"],"_bbp_last_reply_id":["441883"],"_bbp_last_active_id":["441883"],"_bbp_last_active_time":["2025-09-22 04:37:15"],"_bbp_reply_count_hidden":["1"],"_bbp_engagement":["20905","241700","598175"],"_bbp_status":["publish"]},"test":"jo9fingmail-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/394773","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\/394773\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=394773"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}