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Use concrete material in "Static Stress with Nonliner Material Models"

Use concrete material in "Static Stress with Nonliner Material Models"

(OP)
Hi.
Did anybody use reinforced-concrete material in NonLinear problem in Algor 2012?
Material settings:
** Plain concrete material properties

    Young's modulus =  0.3250E+05
    Poisson's ratio =  0.1800E+00
    Mass density =  0.2447E-12
    Failure strength in uniaxial tension =  0.1150E+01
    Failure strength in uniaxial compression =  0.1700E+02
    Constant shear retention factor =  0.7000E+00
    No tension stiffening is defined
    Hardening curve
       Plastic Strain          Stress
           0.0000E+00      0.0000E+00
          NaN              0.1700E+02
    Material model parameters
       A1 =  0.3300E+00
       A2 =  0.9260E+01
       A3 =  0.4130E+01
       A4 =  0.2400E+00
       C0 =  0.5500E+01
       k0 =  0.8800E+00

The solver report:
Time        Percent     DT       L Iter. Residual
   0.000000   0.00     0.050000  1   0   0.0000E+00
 ** Reached autotm limit.
 ** For possible causes and solutions,
    check under "Help: Index" for "Autotm limit".
 
 ** Job started           : 2011-07-21  18:39:00
 ** Job finished          : 2011-07-21  18:42:11
 ** Total elapsed time    : 3:10 (minutes:seconds)
 ** Error (1)
  !! Program aborted !


What am I doing wrong?

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