Ansys Employee
If you are willing to use workbench instead of APDL this -
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- is a helpful tutorial on how to perform buckling with thermal expansion. For simulating buckling post the critical temperature ANSYS provides 2 methods for dealing with non convergence non linear stabilization and arch length stabilization. You could check Unstable Structures for details regarding both. The non linear stabilization uses artificial viscous forces to reduce displacement at unstable nodes and stabilize the solution, while the arch length method is a numerical technique that can model the negative portion of slope deflection curve. You need to turn large deflection 'On" for non linear problems and start with the default time step settings with auto time stepping set to program controlled (you could change this if the you face convergence issue later). Also temperature can be applied as ramped thermal load as shown in the first video. Also check https://ansyshelp.ansys.com/account/secured?returnurl=/Views/Secured/corp/v193/ans_str/Hlp_G_STR8_12.html (best practices for nonlinear analysis) and
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Regards Ishan.
How to access links to help documentation ? - https://forum.ansys.com/discussion/22563/using-help-with-links#latest