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Analysis in 2D
Posted: 09 Sep 2015, 19:51
by khan0099
Dear sir !
i am asking a question irrelevant but i need it's answer , i have design a 3D model in etab , which i want to analyse in seismo-struct . my question is can i analyse a 3D model in 2D in seismo-struct , Is there any changes in result will be occur or not , need an explained answer ,
Thank you
regards
Re: Analysis in 2D
Posted: 10 Sep 2015, 09:17
by z.gronti
Dear Khan,
There will be changes if you analyze a 3D model as a 2D model. The changes depend on the simplifications you make.
Re: Analysis in 2D
Posted: 13 Sep 2015, 14:11
by ruipinho
khan0099,
Is there a particular reason why you wish to force a 2D analysis in SeismoStruct? Why do you not simply build a 3D model of your structure in SeismoStruct?
Best,
Rui
Re: Analysis in 2D
Posted: 14 Sep 2015, 06:19
by khan0099
dear sir !
it took alot of time to analyze a 3D model in seismo-struct ,
Can you explain the changes that will happened when i analyze a 3D model in 2D in seismo-struct .
Re: Analysis in 2D
Posted: 15 Sep 2015, 09:29
by ruipinho
khan0099,
Yes, a 2D analysis will indeed be faster than a 3D one.
However, naturally, if your structure is not regular in plan and/or your seismic input is bidirectional, then your 2D simplification will inevitably introduce errors.
I suggest that you run some experiments with small sub-sets of your full model, comparing the results you obtain with 2D and 3D analyses, and then withdraw your own conclusions.
Best of luck with your investigations,
Rui