Eigenmode Imperfections - Postbuckling
Eigenmode Imperfections - Postbuckling
(OP)
Is there any way in Nastran to apply geometric imperfections for a postbuckling analysis?
In Abaqus, you can use the *Imperfection command to point to a results file of a buckling eigenvalue analysis.
*Imperfection, file=buckle_results
1, 0.05
2, 0.05
.. (specify mode number and max displacement)
I'm looking to a do the same thing in Nastran. Any suggestions?
Thanks
In Abaqus, you can use the *Imperfection command to point to a results file of a buckling eigenvalue analysis.
*Imperfection, file=buckle_results
1, 0.05
2, 0.05
.. (specify mode number and max displacement)
I'm looking to a do the same thing in Nastran. Any suggestions?
Thanks





RE: Eigenmode Imperfections - Postbuckling
There should be examples in the manual.
Regards
Thomas
RE: Eigenmode Imperfections - Postbuckling
Brian
www.espcomposites.com
RE: Eigenmode Imperfections - Postbuckling
Another way is to use the command "Create loads from loadset", creating loads at the vector of the deform mode you want, but you have to adjust the displacement caused by the loads using "Scale load" command.
I don 't know if i help you...