{"id":247776,"date":"2023-01-27T21:46:39","date_gmt":"2023-01-27T21:46:39","guid":{"rendered":"\/forum\/forums\/topic\/question-about-the-meaning-of-a-warning\/"},"modified":"2023-01-30T22:40:18","modified_gmt":"2023-01-30T22:40:18","slug":"question-about-the-meaning-of-a-warning","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/question-about-the-meaning-of-a-warning\/","title":{"rendered":"Question about the meaning of a warning"},"content":{"rendered":"

Hello, I am simulating a coupled transient thermal and transient structural simulation. In the transient thermal simulation, I have an APDL variable representing the amount of heat applied to the surface of the geometry. If I run the thermal simulation with a very small amount of applied heat, this results in a temperatures that are just slightly above the initial temperature.<\/p>\n

Then after doing this, improrting the results to transient structural, and running the structural simulation, I get this warning:<\/p>\n

 *** WARNING ***                         CP =      42.188   TIME= 12:31:40
 A reference force value times the tolerance is used by the              
 Newton-Raphson method for checking convergence.  The calculated         
 reference FORCE CONVERGENCE VALUE = 1.728813387E-05 is less than a      
 threshold.  This threshold is internally calculated.  You can           
 overwrite it by specifying MINREF on the CNVTOL command.  Check         
 results carefully.    <\/p>\n

What does this warning mean?<\/p>\n","protected":false},"template":"","class_list":["post-247776","topic","type-topic","status-closed","hentry","topic-tag-apdl","topic-tag-convergence","topic-tag-coupled-simulation","topic-tag-transient-structural","topic-tag-transient-thermal","topic-tag-warning"],"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