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LAW36 material curve assignment? [SOLVED]

User: "Altair Forum User"
Altair Employee
Updated by Altair Forum User

Hello,

 

In the RD-xxxx tutorials the stress-strain curve is assigned to fct_ID1, but I cannot find it in my Hypermesh. There is a curve assignment field under fct_ID_E, and one more field under the NFunc. If I assign it for fct_ID_E, RADIOSS gives an error that stress should decrease as plastic strain increases. If I assign to the field under NFunc, it also needs scale and EPS_DOT.

 

1. What are these two parameters?.

2. Eventually, where do I provide the curve?

3. Also, after creating the material, is there a way to view the true stress - strain curve just to confirm that RADIOSS interprets it correctly? I also tried the Johnson Cook material model but the results were way wrong (strain of >200% when the fail strain is 8%). So I just want to make sure the fields I am entering have correct interpretation by checking with the total stress strain curve.

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