Can I use buckling eigenmodes for the same part, but with different elements?

[apal21]

Hello,

Suppose I have calculated buckling eigenmodes for a part with shell (S4R) elements, which I want to use as a perturbation for a post-buckling analysis. Can I use these same eigenmodes (what you need are the .fil file and .prt file) if I re-construct the same part in 3d, say with C3D8R elements? Or vice versa, interchanging 2d and 3d.

 

[FEA way]

No, it can’t be done this way. Abaqus uses nodal data for imperfections and they may be introduced only to the same mesh.

 

[apal21]

Got it, thank you!