Eigen analysis with cable material

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Farid
Posts: 23
Joined: Thu May 05, 2005 11:10 am
Location: University of California, Los Angeles

Eigen analysis with cable material

Post by Farid » Wed Apr 12, 2017 6:03 pm

Hi,

I assume that cable material in opensees has a tension-only behavior. Eigen analysis is a linear analysis, I am wondering how does OS handle cable material (with a prestress tension) during eigen analysis?! Does OS assume a linear elastic behavior for cable with identical tension and compression stiffnesses during eigen analysis?
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fmk
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Re: Eigen analysis with cable material

Post by fmk » Thu Apr 13, 2017 2:25 pm

the eigen command will use the current stiffness of each element, the elements will use the current material tangent
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Farid
Posts: 23
Joined: Thu May 05, 2005 11:10 am
Location: University of California, Los Angeles

Re: Eigen analysis with cable material

Post by Farid » Thu Apr 13, 2017 2:32 pm

Got it. Thank you.
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