{"id":428074,"date":"2025-04-06T07:16:21","date_gmt":"2025-04-06T07:16:21","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/error-temp-dof-value-exceeding\/"},"modified":"2025-04-06T07:17:27","modified_gmt":"2025-04-06T07:17:27","slug":"error-temp-dof-value-exceeding","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/error-temp-dof-value-exceeding\/","title":{"rendered":"Error: TEMP dof value exceeding"},"content":{"rendered":"<p>&lt;p&gt;&lt;p&gt;Hello&nbsp; community,&lt;\/p&gt;&lt;p&gt;I am trying to run a thermo mechaincal analysis for brake. I have applied convection with film coefficient of 5e-05 W\/mm^2 K on to the brake faces of the disc and pads. The initial and reference temperature is 22 deg C for convection. I have also applied the mechanical loads like joint rotational velocity, joint force. Frictional contacts have been defined between contacting faces of pad and disc that are having Pure penalty formulation with detection method as Nodal- normal to target. Normal stiffness defined as 0.075. The load steps for free rotation converge, but at the start of brake application (Brake force applied as joint force in 3rd load step) where the brake force is linearly ramped over a span of 0.1 seconds fails to converge with following errors:&lt;\/p&gt;&lt;p&gt;The value of TEMP at node 215974 is 11417734.8. It ia greater than the&lt;br&gt;current limit of 1000000 (which can be reset on the NCNV command).&lt;br&gt;This generally indicates that there are no temperature constraints or&lt;br&gt;convections applied.&lt;\/p&gt;&lt;p&gt;*** MESSAGE CONTINUATION &#8212;- DIAGNOSTIC INFORMATION ***&lt;br&gt;If one or more parts of the model are held together only by contact&lt;br&gt;verify that the contact surfaces are closed. You can check contact&lt;br&gt;status in the SOLUTION module for the converged solutions using&lt;br&gt;CNCHECK.&lt;br&gt;*** ERROR ***&lt;br&gt;*** MESSAGE CONTINUATION &#8212;- DIAGNOSTIC INFORMATION ***&lt;br&gt;Rigid body motion can also occur when net section yielding has&lt;br&gt;occurred resulting in large displacements for small increments of load&lt;br&gt;or when buckling has occurred. You can plot the time history curve&lt;br&gt;for node 215974 in the TEMP direction to check for stiffness (slope of&lt;br&gt;the curve) approaching zero.&lt;\/p&gt;&lt;p&gt;As per the error, I&#8217;ve previously ran the contact tool and observed the initial status to be closed for all the contacts defined. How to troubleshoot these errors so that the disc can stop rotating after the brake force application.&lt;\/p&gt;&lt;p&gt;Regards,&lt;\/p&gt;&lt;p&gt;Rohan.&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-428074","topic","type-topic","status-publish","hentry","topic-tag-convergence","topic-tag-coupled-field-1","topic-tag-disc-brake"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_forum_id":["27791"],"_bbp_topic_id":["428074"],"_bbp_author_ip":["27.59.102.218"],"_bbp_last_reply_id":["430740"],"_bbp_last_active_id":["430740"],"_bbp_last_active_time":["2025-05-03 11:59:33"],"_bbp_reply_count":["13"],"_bbp_reply_count_hidden":["0"],"_bbp_voice_count":["3"],"_bbp_engagement":["339414","490","20905"],"_btv_view_count":["500"],"_bbp_topic_status":["unanswered"],"_bbp_subscription":["339414","490","20905"],"_edit_last":["339414"],"_bbp_revision_log":["a:1:{i:428076;a:2:{s:6:\"author\";i:339414;s:6:\"reason\";s:0:\"\";}}"]},"test":"engr-rohan7gmail-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/428074","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\/428074\/revisions"}],"predecessor-version":[{"id":428076,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/428074\/revisions\/428076"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=428074"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}