Reply To: Some error warning running procedure

[yuyang]

hi Walter
i also met some problems with Example N° 4. i download the example and didn’t make any change . when i run opensees，there are some problems as follow

o Analysis: Gravity
o Analysis: Pushover
WARNING: CTestNormDispIncr::test() – failed to converge
after: 25 iterations current Norm: 0.0113331 (max: 1e-008, Norm deltaR: 12.0539)
AcceleratedNewton::solveCurrentStep() -The ConvergenceTest object failed in test()
StaticAnalysis::analyze() – the Algorithm failed at iteration: 0 with domain at load factor 464.64
OpenSees > analyze failed, returned: -3 error flag

KrylovNewton failed (disp = 8.167e+000, load = 4.645e+002), try Newton
WARNING: CTestNormDispIncr::test() – failed to converge
after: 25 iterations current Norm: 0.0193136 (max: 1e-008, Norm deltaR: 0.144816)
AcceleratedNewton::solveCurrentStep() -The ConvergenceTest object failed in test()
StaticAnalysis::analyze() – the Algorithm failed at iteration: 0 with domain at load factor 464.62
OpenSees > analyze failed, returned: -3 error flag

KrylovNewton failed (disp = 8.174e+000, load = 4.646e+002), try Newton
WARNING: CTestNormDispIncr::test() – failed to converge
after: 25 iterations current Norm: 0.000229172 (max: 1e-008, Norm deltaR: 0.168427)
NewtnRaphson::solveCurrentStep() -the ConvergenceTest object failed in test()
StaticAnalysis::analyze() – the Algorithm failed at iteration: 0 with domain at load factor 464.605
OpenSees > analyze failed, returned: -3 error flag

Newton failed (disp = 8.174e+000, load = 4.646e+002), try Newton w/ iniCurrent
WARNING: CTestNormDispIncr::test() – failed to converge
after: 25 iterations current Norm: 0.0011156 (max: 1e-008, Norm deltaR: 0.2284)
NewtnRaphson::solveCurrentStep() -the ConvergenceTest object failed in test()
StaticAnalysis::analyze() – the Algorithm failed at iteration: 0 with domain at load factor 464.605
OpenSees > analyze failed, returned: -3 error flag

Newton w/ iniCurrent failed (disp = 8.174e+000, load = 4.646e+002), try Newton w/ ini

but if i improve the strength of both concrete and steel.all the problems above are solved. while if i reduce the load without change the strength .these problem still exist
i am a beginner. maybe you can explain the reason to me

Many Thanks
Yu Yang