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This is possible with OptiStruct.Please refer attached document from OptiStruct user guide.
Hi,
it is possible to use nonlinear quasistatic analysis as a preload for linear buckling analysis (see attached model). From Optistruct help:
A linear buckling solution cannot be performed on a linear static subcase that uses inertia relief. STATSUB(BUCKLING) can only be used to reference buckling to linear static or nonlinear static (small displacement + N2S/S2S contact only) subcases. For more information in using a preloaded linear static analysis (with STATSUB(PRELOAD) pointing to large displacement nonlinear analysis), in buckling analysis, refer to Linear Buckling Analysis in the User Guide.
I've just tried to open file.
Sorry, could you resave file on HM 2017, or just send .fem file?
perfect!=)
it works!
my mistake was that i had used static nonlin-geom.)
where did you find in UsGuide part about it feature?
That document is from Reference Guide>Input Data>Subcase Information Section>STATSUB.
No idea?