Is it possible to simulate Inelastic Lateral Buckling of beams by beam-column elements in opensees?

[wuhuaxie]

Hi all,

I wonder is it possible to simulate Inelastic Lateral Buckling of beams by beam-column element in opensees? For example, a cantilever steel tubular beam subjected to a vertical load at its tip.

My model is a steel cylinder tower (diameter/thickness ratio over 100) subjected to lateral pushover.

I know how to model slender column by using the corotational mesh approach, but how about the flexural issue? Enabling a thin-walled tubular beam to show the buckling behavior instead of the ductile hinge behavior.

I know there are some beam-column elements for warping effect, but I haven't found them in openseespy yet, are they the solution? or turn to the final solution of using shell elements.

Thank you for your kind reply!

[mhscott]

You can try dispBeamColumnAsym: https://opensees.github.io/OpenSeesDocu ... nAsym.html
or mixedBeamColumnAsym: https://opensees.github.io/OpenSeesDocu ... nAsym.html

[wuhuaxie]

Thank you very much for your suggestions. I will try them.

[braydenmorales]

These links that you share are helpful with me.
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