Period difference in OpenSees and other programs

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foadEng
Posts: 28
Joined: Sun Jan 24, 2010 12:51 pm
Location: Iran

Period difference in OpenSees and other programs

Post by foadEng »

Hi
I'm using OpenSees for 3D modeling. I wanted to know about the period difference between same models in OpenSees and other programs. For example for a 2 story (3D model) first mode period is 0.7 in OpenSees but 0.65 in SAP or ETABS. I just wanted to know if this difference is acceptable or not?! If it's not how much difference is good?
Thank you very much!
Foad Mohajeri Nav
Iran University of Science and Technology
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fmk
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Posts: 5884
Joined: Fri Jun 11, 2004 2:33 pm
Location: UC Berkeley
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Post by fmk »

there should be no difference if you use the same elements and materials .. if there is, it means that the models are different.
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