how to calculate the torsional deflection of thin-walled beams considering buckling 1

[silvamat]

Hi all

I need to calculate the torsional deflection of a thin-walled beam of arbitrary section. Thin-walled beams behave like shells, so buckling is an important factor. Is there any equation to calculate the torsional deflection of thin-walled beams taking in consideration the buckling effect? I need an expression with the polar inertia moment. I also would like to have the reference of a book or something with that equation, so I can study the matter by myself


thanks in advance,
regards,
Miguel Silva, MSc.

 

[GregLocock]

Not in general. You might consider some sort of limit by eliminating the buckled panel and recalculating K for the new section.

Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376

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[racookpe1978]

You've asked this same question now 5 times in 4 different forums. You apparently do like any of the answers our readers have contributed.

Make the finite element model. Solve it yourself. Stop repeating the question.

 

[3DDave]

There's a very simple method for solving it, but I'll have to come back to write it up later.

It's based on a method Fermat developed.