error in time history analysis

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greatFAZ
Posts: 4
Joined: Wed Jul 17, 2013 8:21 pm
Location: tabriz

error in time history analysis

Post by greatFAZ » Wed Jul 17, 2013 8:27 pm

hi every one.when i want to do time history analysis i face an error.what is it and how can i solve it?
the error is:
OpenSees > source 33.tcl
periods are 0.12142953755293168 0.12142953755293168
Model Built
WARNING PlainHandler::handle() - constraint matrix not identity, ignoring const
raint for node 2
non-varyng assumed
WARNING PlainHandler::handle() - constraint matrix not identity, ignoring const
raint for node 4
non-varyng assumed
WARNING PlainHandler::handle() - constraint matrix not identity, ignoring const
raint for node 6
non-varyng assumed
WARNING PlainHandler::handle() - constraint matrix not identity, ignoring const
raint for node 8
non-varyng assumed
WARNING BandGenLinLapackSolver::solve() -LAPACK routine returned 25
WARNING Linear::solveCurrentStep() -the LinearSOE failed in solve()
DirectIntegrationAnalysis::analyze() - the Algorithm failed at time 0.02
OpenSees > analyze failed, returned: -3 error flag

naba077
Posts: 34
Joined: Mon May 28, 2012 9:38 pm
Location: Saitama University

Re: error in time history analysis

Post by naba077 » Thu Jul 18, 2013 2:12 am

Can you upload your whole program?

punitbarwani
Posts: 19
Joined: Tue Aug 06, 2013 10:48 pm
Location: Indore, India

Comparision Of Opensees And IDARC

Post by punitbarwani » Tue Aug 06, 2013 11:50 pm

can anyone help me to compare drift result of OPENSEES and IDARC of a portal frame, analysis type is dynamic with time history everything in modelling is done but some due to some parameters the results are different
My email id is " punits95@hotmail.com " & " coolpunitrocks@gmail.com " plz plz plz contact me here or at mail i will send u all result and modelling of both OPENSEES and IDARC.....
thank you!!

fmk
Site Admin
Posts: 5866
Joined: Fri Jun 11, 2004 2:33 pm
Location: UC Berkeley
Contact:

Re: error in time history analysis

Post by fmk » Tue Aug 13, 2013 3:04 pm

the answer to original post is to use Penalty or Transformation constraint handler. you are using rigid diaprags or something in the model and the constraint matrix is not the identity.

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