Buckling mode shows for one model, but not for another with different thickness? [COMSOL]
Buckling mode shows for one model, but not for another with different thickness? [COMSOL]
(OP)
I have a linear buckling model where the thickness is t = 0.005 m, here I get a buckling mode shape with the corresponding critical load factor as seen on the right:

But I change the thickness to 0.035 and run the exact same model again, but dont get a buckling mode or critical load factor:

The only thing that comes to mind is perhaps the prescribed displacement which I have set to -0.01 m in the x-direction. Perhaps as the thickness is larger in the second model I have to pull on it harder to achieve buckling? I am currently trying to increase the displacement to -0.035 but I am not sure this is working. Is there some other reason why my second model might not be giving me the buckling mode I want?

But I change the thickness to 0.035 and run the exact same model again, but dont get a buckling mode or critical load factor:

The only thing that comes to mind is perhaps the prescribed displacement which I have set to -0.01 m in the x-direction. Perhaps as the thickness is larger in the second model I have to pull on it harder to achieve buckling? I am currently trying to increase the displacement to -0.035 but I am not sure this is working. Is there some other reason why my second model might not be giving me the buckling mode I want?
RE: Buckling mode shows for one model, but not for another with different thickness? [COMSOL]
RE: Buckling mode shows for one model, but not for another with different thickness? [COMSOL]
RE: Buckling mode shows for one model, but not for another with different thickness? [COMSOL]
RE: Buckling mode shows for one model, but not for another with different thickness? [COMSOL]
RE: Buckling mode shows for one model, but not for another with different thickness? [COMSOL]
I get the error message:
"The following feature has encountered a problem:
- Feature: Eigenvalue Solver 1 (sol1/e1)
No eigenvalues found.
- Error on node 1: No eigenvalues found.
- Error on node 2: No eigenvalues found.
- Error on node 3: No eigenvalues found.
- Error on node 4: No eigenvalues found.
- Error on node 5: No eigenvalues found.
- Error on node 6: No eigenvalues found.
- Error on node 7: No eigenvalues found.
- Error on node 8: No eigenvalues found.
- Error on node 9: No eigenvalues found.
- Error on node 10: No eigenvalues found.
- Error on node 11: No eigenvalues found.
- Error on node 12: No eigenvalues found.
- Error on node 13: No eigenvalues found.
- Error on node 14: No eigenvalues found.
- Error on node 15: No eigenvalues found."