buckling of steel column

02-Getting started with the modelling
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kargar
Posts: 11
Joined: 31 May 2009, 05:42

buckling of steel column

Post by kargar »

I want to model a steel structure, whose columns are capable of buckling. I know that I have to introduce an imperfection inside my element as well as refined mesh. I just want to know which of the three models which are introduced inside the software for steel is suitable for modelling the buckling.
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seismosoft
Posts: 1184
Joined: 06 Jul 2007, 04:55

Re: buckling of steel column

Post by seismosoft »

In principle, any model should be fine since the buckling will be mainly driven by geometrical nonlinearity, rather than material one.

However, if one uses an adequately calibrated 'stl_mn' model, it will obviously be easier to simulate buckling. The same happens for the 'stl_mp' model with a negative value for the 'a3' parameter, which is perhaps the model that we would reccommend.

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