{"id":457489,"date":"2026-05-01T04:37:43","date_gmt":"2026-05-01T04:37:43","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/error-the-body-selection-must-be-a-part-of-body-contact-tracker\/"},"modified":"2026-05-01T04:37:43","modified_gmt":"2026-05-01T04:37:43","slug":"error-the-body-selection-must-be-a-part-of-body-contact-tracker","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/error-the-body-selection-must-be-a-part-of-body-contact-tracker\/","title":{"rendered":"Error: The Body Selection must be a part of Body Contact Tracker"},"content":{"rendered":"

<p>I am trying to extract contact force using contact force tracker (added by right clicking the ‘Solution Information’) scoped to a rigid body (tool) interacting with a flexible body (workpiece), when trying to simulate an orthogonal cutting process in ANSYS 2021R1 LS-DYNA. I only used ‘body interaction’ as a connection between these two bodies, with a frictional coffecient entered as 0.3, with no other contacts built betweeen these bodies (like bonded, etc). However, when I try to evaluate the results after solution has finished, the contact force tracker doesn’t work, and generates me this error as I am sharing in the picture. I don’t know how to add the body contact tracker, because I don’t see any option to add it from anywhere (like it doesn’t show up in the ‘Solution Information’). Can you tell me how should I address this issue?<br><br>\"\"<\/p><\/p>\n","protected":false},"template":"","class_list":["post-457489","topic","type-topic","status-publish","hentry","topic-tag-ansys-ls-dyna-1","topic-tag-body-interaction-1","topic-tag-contact-force-reaction"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t