Flat Panel Post-Buckling Analysis with Implicit Method using OptiStruct

Sebastien Gordon_20282

Hi,

I would like to know if it is possible to obtain files (*.fem , *.hm) or more detailed procedures to reproduce the analysis related to the “ Flat Panel Post-Buckling Analysis with Implicit Method using OptiStruct” study, from Yuhao He, Senior Project and James M. Gilbert, Engineer Chief Engineer

Ref. :Post-Buckling Analysis with Implicit Method using OptiStruct_190219.pdf,

from, https://www.altair.com/resource/flat-panel-post-buckling-analysis-with-implicit-method-using-optistruct

I’m interested about “imperfection =translating nodes randomly”; “damping” and “Contact” FEM configuration.

Thanks,

 

seb

yuhaohe

Hi Seb,

 

You may see the .fem files in the attachments. One file contains imperfection and the other contains all contacts and stabilizations.

I used a script to randomly translate all nodes with small distance, but I cannot find the script now. If I remember correctly, only the perfectly flat panel needs imperfection to initiate buckling. More complex structure has "imperfection" in the geometry itself and thus doesn't need artificial imperfections.

 

Thanks,

Yuhao 

flat_panel_with_frame_shear_5perThick.fem

flat_panel_with_frame_shear_N2S_10x_N2S_stab-1.fem