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Transient convergence issue

Transient convergence issue

Transient convergence issue

(OP)
I am running a transient dynamic analysis in ansys, at some time point it is failing to converge and the MAX DOF INC bounces back and forth between two point. I am including a sample. It bisects soon and converges but the same bouncing happens again and again. Eventually it reaches the limit and does not bisect again. I know that there is way to view residual forces in ANSYS I just can't seem to remember or find the command in help.  Any help is appreciated.

Thanks

    EQUIL ITER   6 COMPLETED.  NEW TRIANG MATRIX.  MAX DOF INC= -0.1623E-05
     FORCE CONVERGENCE VALUE  =  1922.      CRITERION=  10.85
     MOMENT CONVERGENCE VALUE = 0.2778E-06  CRITERION= 0.3117E-02 <<< CONVERGED
    EQUIL ITER   7 COMPLETED.  NEW TRIANG MATRIX.  MAX DOF INC=  0.1623E-05
     FORCE CONVERGENCE VALUE  =  1.004      CRITERION= 0.2982E-01
     MOMENT CONVERGENCE VALUE = 0.3128E-06  CRITERION= 0.3207E-02 <<< CONVERGED
    EQUIL ITER   8 COMPLETED.  NEW TRIANG MATRIX.  MAX DOF INC= -0.1623E-05
     FORCE CONVERGENCE VALUE  =  1922.      CRITERION=  11.29
     MOMENT CONVERGENCE VALUE = 0.2778E-06  CRITERION= 0.3245E-02 <<< CONVERGED
    EQUIL ITER   9 COMPLETED.  NEW TRIANG MATRIX.  MAX DOF INC=  0.1623E-05
     FORCE CONVERGENCE VALUE  =  1.004      CRITERION= 0.3105E-01
     MOMENT CONVERGENCE VALUE = 0.3128E-06  CRITERION= 0.3340E-02 <<< CONVERGED

RE: Transient convergence issue

Look up the help for the nldiag command.  I believe what you want is:

nldiag,nrre,X

Where X is the number of Newton Raphson residuals you wish to store.

Hope this helps,
Doug

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