hi everybody.
i'm doing pushover analysis for a 6 story RC moment frame, i have a loop for trying various types of algorithms, after these warning analysis runs successfully, despite of these warnings the outputs are valid or nut????
Model Built
WARNING: CTestNormDispIncr::test() - failed to converge
after: 100 iterations
NewtnRaphson::solveCurrentStep() -the ConvergenceTest object failed in test()
StaticAnalysis::analyze() - the Algorithm failed at iteration: 43 with domain at
load factor 56706.4
OpenSees > analyze failed, returned: -3 error flag
WARNING: CTestNormDispIncr::test() - failed to converge
after: 100 iterations
NewtnRaphson::solveCurrentStep() -the ConvergenceTest object failed in test()
StaticAnalysis::analyze() - the Algorithm failed at iteration: 0 with domain at
load factor 56706.4
OpenSees > analyze failed, returned: -3 error flag
Trying Newton with Initial Tangent ..
WARNING BandGenLinLapackSolver::solve() -LAPACK routine returned 244
WARNING NewtonRaphson::solveCurrentStep() -the LinearSysOfEqn failed in solve()
StaticAnalysis::analyze() - the Algorithm failed at iteration: 0 with domain at
load factor 56717.4
OpenSees > analyze failed, returned: -3 error flag
Trying Broyden ..
WARNING: CTestNormDispIncr::test() - failed to converge
after: 10 iterations
WARNING: CTestNormDispIncr::test() - failed to converge
after: 10 iterations
WARNING: CTestNormDispIncr::test() - failed to converge
after: 10 iterations
Large trial compressive strain
UniaxialMaterial::setTrial() - material failed in setTrialStrain()
Large trial compressive strain
UniaxialMaterial::setTrial() - material failed in setTrialStrain()
Large trial compressive strain
UniaxialMaterial::setTrial() - material failed in setTrialStrain()
ForceBeamColumn2d::update() - section failed in setTrial
Large trial compressive strain
UniaxialMaterial::setTrial() - material failed in setTrialStrain()
Large trial compressive strain
UniaxialMaterial::setTrial() - material failed in setTrialStrain()
Large trial compressive strain
UniaxialMaterial::setTrial() - material failed in setTrialStrain()
Large trial compressive strain
UniaxialMaterial::setTrial() - material failed in setTrialStrain()
Large trial compressive strain
UniaxialMaterial::setTrial() - material failed in setTrialStrain()
Large trial compressive strain
UniaxialMaterial::setTrial() - material failed in setTrialStrain()
Large trial compressive strain
UniaxialMaterial::setTrial() - material failed in setTrialStrain()
Large trial compressive strain
UniaxialMaterial::setTrial() - material failed in setTrialStrain()
Large trial compressive strain
UniaxialMaterial::setTrial() - material failed in setTrialStrain()
Large trial compressive strain
UniaxialMaterial::setTrial() - material failed in setTrialStrain()
ForceBeamColumn2d::update() - section failed in setTrial
Domain::update - domain failed in update
DisplacementControl::update - model failed to update for new dU
WARNING Broyden::solveCurrentStep() -the Integrator failed in update()
StaticAnalysis::analyze() - the Algorithm failed at iteration: 0 with domain at
load factor 59124.3
OpenSees > analyze failed, returned: -3 error flag
Trying NewtonWithLineSearch ..
Large trial compressive strain
UniaxialMaterial::setTrial() - material failed in setTrialStrain()
Large trial compressive strain
UniaxialMaterial::setTrial() - material failed in setTrialStrain()
Large trial compressive strain
UniaxialMaterial::setTrial() - material failed in setTrialStrain()
Large trial compressive strain
UniaxialMaterial::setTrial() - material failed in setTrialStrain()
Large trial compressive strain
UniaxialMaterial::setTrial() - material failed in setTrialStrain()
Large trial compressive strain
UniaxialMaterial::setTrial() - material failed in setTrialStrain()
Large trial compressive strain
UniaxialMaterial::setTrial() - material failed in setTrialStrain()
Large trial compressive strain
UniaxialMaterial::setTrial() - material failed in setTrialStrain()
Large trial compressive strain
UniaxialMaterial::setTrial() - material failed in setTrialStrain()
Large trial compressive strain
UniaxialMaterial::setTrial() - material failed in setTrialStrain()
Large trial compressive strain
UniaxialMaterial::setTrial() - material failed in setTrialStrain()
Large trial compressive strain
UniaxialMaterial::setTrial() - material failed in setTrialStrain()
ForceBeamColumn2d::update() - section failed in setTrial
Domain::update - domain failed in update
DisplacementControl::update - model failed to update for new dU
WARNING NewtonRaphson::solveCurrentStep() -the Integrator failed in update()
StaticAnalysis::analyze() - the Algorithm failed at iteration: 0 with domain at
load factor 61873.5
OpenSees > analyze failed, returned: -3 error flag
Trying Newton with Initial Tangent ..
WARNING BandGenLinLapackSolver::solve() -LAPACK routine returned 244
WARNING NewtonRaphson::solveCurrentStep() -the LinearSysOfEqn failed in solve()
StaticAnalysis::analyze() - the Algorithm failed at iteration: 0 with domain at
load factor 57723.8
OpenSees > analyze failed, returned: -3 error flag
Trying Broyden ..
Large trial compressive strain
UniaxialMaterial::setTrial() - material failed in setTrialStrain()
Large trial compressive strain
UniaxialMaterial::setTrial() - material failed in setTrialStrain()
Large trial compressive strain
UniaxialMaterial::setTrial() - material failed in setTrialStrain()
Large trial compressive strain
UniaxialMaterial::setTrial() - material failed in setTrialStrain()
Large trial compressive strain
UniaxialMaterial::setTrial() - material failed in setTrialStrain()
Large trial compressive strain
UniaxialMaterial::setTrial() - material failed in setTrialStrain()
Large trial compressive strain
UniaxialMaterial::setTrial() - material failed in setTrialStrain()
Large trial compressive strain
UniaxialMaterial::setTrial() - material failed in setTrialStrain()
Large trial compressive strain
UniaxialMaterial::setTrial() - material failed in setTrialStrain()
Large trial compressive strain
UniaxialMaterial::setTrial() - material failed in setTrialStrain()
ForceBeamColumn2d::update() - section failed in setTrial
Large trial compressive strain
UniaxialMaterial::setTrial() - material failed in setTrialStrain()
Large trial compressive strain
UniaxialMaterial::setTrial() - material failed in setTrialStrain()
Large trial compressive strain
UniaxialMaterial::setTrial() - material failed in setTrialStrain()
Large trial compressive strain
UniaxialMaterial::setTrial() - material failed in setTrialStrain()
Large trial compressive strain
UniaxialMaterial::setTrial() - material failed in setTrialStrain()
Large trial compressive strain
UniaxialMaterial::setTrial() - material failed in setTrialStrain()
ForceBeamColumn2d::update() - section failed in setTrial
Domain::update - domain failed in update
DisplacementControl::update - model failed to update for new dU
WARNING Broyden::solveCurrentStep() -the Integrator failed in update()
StaticAnalysis::analyze() - the Algorithm failed at iteration: 0 with domain at
load factor 62666.2
OpenSees > analyze failed, returned: -3 error flag
Trying NewtonWithLineSearch ..
analysis SUCCESSFULL
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valid or invalid of the outputs after these warnings:
Moderators: silvia, selimgunay, Moderators
Re: valid or invalid of the outputs after these warnings:
look at the results around the time steps indicated .. you might want to remove the Broyden algorithm as it does not appear to be working and seems to be causing the steps with the bad strains (these are ignored in the solution, as if Broyden or whatever algorithm fails the model goes back to the last converged step and you try something different)