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Command lines for using Tsai-Wu failure criteria

Command lines for using Tsai-Wu failure criteria

Command lines for using Tsai-Wu failure criteria

(OP)
I'm a little bit confused about the Tsai-Wu failure criteria used with Solid46 elements. I tried to program the criteria by myself (with the equations in the help files), in order to verify if the results would be the same as the pre-programmed criteria, but they are not. Maybe the problem comes from my command lines, when I call the TW criteria. The help is not quite clear about the way of writing those lines... Here are my commands for specifying TW:

...
TBDELE,FAIL,1            
TB,FAIL,1,1
TBTEMP,,CRIT
TBDATA,1,3,1            ! 3 = Tsai-Wu (I guess...)
TBTEMP,T1,1
TBDATA,   1, (... and then, the material data...)
...

Is the sequence ok for printing the Tsai-Wu criteria, or is an argument wrong somewhere? Thanks for your help.

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