{"id":343670,"date":"2024-01-08T16:05:50","date_gmt":"2024-01-08T16:05:50","guid":{"rendered":"\/forum\/forums\/reply\/343670\/"},"modified":"2024-01-08T16:05:50","modified_gmt":"2024-01-08T16:05:50","slug":"343670","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/343670\/","title":{"rendered":"Reply To: A solver pivot warning or error has been detected"},"content":{"rendered":"

<p>Hello Calvin!<br>Considering the warnings\/errors, I would recommend you validate the geometry first! As there might be a presence of some underdefined beams.<br>Solver pivot error to make you understand simply is the solution which has resulted in to singular matrix i.e., it may have many solutions (not unique) or is indeterminate.<br>There might be several reasons for this, <br>Underdefined material – Like improper density, material properties, etc. (Maybe in this case)<br>Underdefined geometry (Maybe in this case)<br>Improper constraints – Over or under constraints <br>Underdefined Contacts<br>Buckling (Maybe in this case) – Structure is deforming up to the extent of giving a non-unique solution.<br><br>How to deal with this issue -<br>Check and verify the above-mentioned points or if you’re getting the apt result and post-processing is an issue, turn off the solver pivot from ‘Solution’ or Lapse the solver pivot checking using the command (PIVCHECK, OFF – PIVCHECK (ansys.com)<\/a> )<\/p><p style=”margin: 0px !important; padding: 0px !important;”>References – <\/p><p style=”margin: 0px !important; padding: 0px !important;”>5.9. Singular Matrices (ansys.com)<\/a><br>Search Ansys Documentation<\/a><\/p><p style=”margin: 0px !important; padding: 0px !important;”>A solver pivot warning or error has been detected (ansys.com)<\/a><\/p><p style=”margin: 0px !important; padding: 0px !important;”>Error: Solver pivot warnings or errors have been encountered during the solution (ansys.com)<\/a><\/p><p style=”margin: 0px !important; padding: 0px !important;”> <\/p><p style=”margin: 0px !important; padding: 0px !important;”>Hope this helps!<\/p><p style=”margin: 0px !important; padding: 0px !important;”>Thanks,<\/p><p style=”margin: 0px !important; padding: 0px !important;”>Sahil<\/p><p style=”margin: 0px !important; padding: 0px !important;”>For more exciting courses and certifications, hit this link: Ansys Innovation Courses | Ansys Innovation Space<\/a><\/p><p style=”margin: 0px !important; padding: 0px !important;”>If you are not able to open the links, refer to this forum discussion: <u style=”color: var(–bs-link-color); background-color: initial;”>How to access the ANSYS Online Help<\/a><\/u><\/p><p style=”margin: 0px !important; padding: 0px !important;”>Guidelines for Posting on Ansys Learning Forum<\/a><\/p><p style=”margin: 0px !important; padding: 0px !important;”> <\/p><\/p>\n","protected":false},"template":"","class_list":["post-343670","reply","type-reply","status-publish","hentry"],"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