geometric imperfections for modeling of brace behavior

03-Unexpected behaviour/errors
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Somayyeh
Posts: 2
Joined: 11 May 2017, 08:15

geometric imperfections for modeling of brace behavior

Post by Somayyeh » 11 May 2017, 09:07

Dear SEISMOSTRUCT Support Team,
My name is Somayyeh,
I have used truss element for modeling braces. For accurate modeling of brace behavior
at buckling, I want to use geometric imperfections. How can I assign imperfection to braces by SEISMOSTRUCT?

huffte
Posts: 840
Joined: 22 Jul 2011, 10:19
Location: Cookeville, Tennessee, USA
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Re: geometric imperfections for modeling of brace behavior

Post by huffte » 11 May 2017, 13:13

Hi Somayyeh.

First, you will likely get more response if you are careful about which forum you post in. I think you inadvertently asked a SeismoStruct question in the SeismoArtif forum area. I imagine that many who use SeismoStruct, but not SeismoArtif, never look in the SeismoArtif forum.

Second, one way to model imperfections is to simply define two elements making up each brace, with the common node coordinates set to give the desired imperfection (i.e., the 3 nodes making up the two elements are not collinear).

Third, best of luck Somayyeh.
Tim Huff

Somayyeh
Posts: 2
Joined: 11 May 2017, 08:15

Re: geometric imperfections for modeling of brace behavior

Post by Somayyeh » 13 May 2017, 12:24

Dear huffte,
Thank you for these useful information( both the appropriate forum and modelling imperfections).

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