parallel analysis of a nonlinear frame

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aaataha
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Joined: Sun Oct 13, 2019 1:44 pm

parallel analysis of a nonlinear frame

Post by aaataha » Fri Jan 15, 2021 2:03 am

Hi,

I am trying to run a model of a nonlinear frame system with force-based elements using openseesSP. However, the analysis doesn't start at all and i get this error "ForceBeamColumn3d::update() -- could not invert flexibility". Although the analysis of the same model can be done successfully using sequential analysis.

mhscott
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Location: Corvallis, Oregon USA
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Re: parallel analysis of a nonlinear frame

Post by mhscott » Sun Jan 17, 2021 9:07 am

Can you provide a minimum example, e.g., a one element model, where this error occurs?

mhscott
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Location: Corvallis, Oregon USA
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Re: parallel analysis of a nonlinear frame

Post by mhscott » Sun Jan 17, 2021 9:10 am

What section model are you using? Do you have the same problem if you switch to 'section Elastic'?

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