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Ansys Learning Forum › Forums › Discuss Simulation › General Mechanical › Buckling Analysis on a curved panel › Reply To: Buckling Analysis on a curved panel

August 27, 2024 at 3:21 pm
dlooman
Ansys Employee

Sometimes it is good to run your input in batch mode.  It is easier to find the error messages that way.  When I do that with your input above I see the error:

*** WARNING ***                         CP =       0.109   TIME= 10:53:30
 No valid degree of freedom labels were input.  The D command is         
 ignored. 

That can be fixed like below:

! D,ALL,, , , , ,, , , , ,UZ
d,all,uz,0

 

I also saw these warnings during solution: 

*** WARNING ***                         CP =       0.266   TIME= 10:53:30
 Node 97 on element 1 is unselected.

That can be fixed with nsel,all before solution.

Your boundary condition at the vertical edges is an axial constraint.  That doesn't seem right.  Check your boundary conditions interactively with /pbc,all,1 and nplot.