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 

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 

Sebastien Gordon_20282

Thanks for your support.

Regards,

seb