Recently ,I construct a 10 story plane frame in opensees.
There are three parts: model , adding seismic load , analysis .
the model is good ,for there are none warnings comes out.
I take the bigbear records as the seismic load ,and modify the peak acceleration as 0.224 g .
And then ,I set the analysis parameters as follows:
rayleigh 0.01 0.02 0.0 0.0
system UmfPack;
constraints Plain;
test NormDispIncr 1.0e-3 100 0;
algorithm BFGS ;
numberer RCM;
integrator Newmark 0.5 0.25 ;
analysis Transient;
analyze 20000 0.005 ;
After analyzing ,WARNings come out :
WARNING - ForceBeamColumn2d::update - failed to get compatible element forces &
deformations for element: 35(dW: << 1712.25)
Domain::update - domain failed in update
Newmark::update() - failed to update the domain
WARNING BFGS::solveCurrentStep() -the Integrator failed in update()
DirectIntegrationAnalysis::analyze() - the Algorithm failed at time 5.135
OpenSees > analyze failed, returned: -3 error flag
-3
How could I identify where is wrong ,and how could I settle the problem?
for element: 35(dW: << 1712.25) , Where is the problem
Moderators: silvia, selimgunay, Moderators
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Casino
I agree with you guys.
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Re: for element: 35(dW: << 1712.25) , Where is the problem
I accept with information: ayleigh 0.01 0.02 0.0 0.0
system UmfPack;
constraints Plain;
test NormDispIncr 1.0e-3 100 0;
algorithm BFGS ;
numberer RCM;
integrator Newmark 0.5 0.25 ;
analysis Transient;
analyze 20000 0.005 ;
system UmfPack;
constraints Plain;
test NormDispIncr 1.0e-3 100 0;
algorithm BFGS ;
numberer RCM;
integrator Newmark 0.5 0.25 ;
analysis Transient;
analyze 20000 0.005 ;