accumulated plastic strain

[Yaakov]

Dear FEAP Team & Users,

I would ask, which commands can I use for the plot results of the hardening variable \alpha (accumulated plastic strain)?

Best regards,
Yaakov

[Prof. R.L. Taylor]

History variables as time-history plots may be done using the
TPLOt command  with the option HIST n1 n2 for internal variable n1 of element n2 (n2 can be replaced by x y z)

Contour plots can be done with

PLOT HISTory hpnum

YOu also have to include in the material set description the command

HIST plot n1 hpnum  (For many materials n1 = 1 for the accumlated plastic strain, but you may have to check the routines)

NOTE:  This command only works with late versions (e.g., ver 8.4)

[Yaakov]

Dear Prof. Taylor,

Thanks very much for your answer.

I added PLOT HISTory 1 1 in the material set description the command (e.g. Iex8 Benchmark)

but it shows no value of accumulated plastic strain:
 *WARNING* No plot - all zero values.

which errors may I make in this input file (Iex8)?

Kind regards,
Yaakov

[FEAP_Admin]

On the material card you want

"hist plot 1 1"

then to plot, use  "plot hist 1"

[Note your time steps are giant and the second time step does not even converge]

Also: you need to have version 8.4 for this feature.