I define a function Yield stress vs temperature in Femap and setting this function in a non linear material definition Card (setting initial yield stress = 1) but when I run the analysis I obtain an error.
The solver consider yield stress = 1 and not considered the predefined function.
How I can properly define this analysis?
Solved! Go to Solution.
I don't used Advanced non linear analysis but the classic non linear analysis (SOL 106).
This procedure is applied also with this solver?
Unfortunately, I don't recall if thermal plasticity works the same way in SOL106.
I know SOL106 has thermal elasticity, and it also has creep plasticity including thermal effects, but don't recall if it can do direct thermal plasticity without using a creep method.
I suggest you look at Chapter 6 of the "Handbook of Nonlinear Analysis (SOL106)" via the Femap menu: Help -> NX Nastran.
Interesting. My copy of the docs (Quick Ref Guide) doesn't even have an entry for MATST1.
I will respectfully urge caution... GTAC may have advised how to produce temp dependent Nastran entries, but I suggest you check very carefully that those entries are producing the intended effect on plasticity if you are using SOL106.
Perhaps its a new feature not documented yet, which would be exciting, as SOL106 has not changed a great deal over the years.
And interesting that it does not use exactly the same entries as SOL601 (adv NL) for the same purpose.
That input is unique to Autodesk Nastran, that option is not available in NX Nastran. It always helps to identify the solver when questions come up on advanced features.