SDV transfer VFRIC to VUMAT

[Alexander24]

I have got a little problem with my subroutines, and I hope you can help me with it.

I have got a VFRIC subroutine with solution-dependent state variables (SDVs) which cannnot be output recording to the Abaqus Analysis User's Manual (22.1.4).

So is it possible to transfer these SDVs to my other subroutine VUMAT (which has also SDVs) which can write SDVs in the .odb file?

If it is possible, how can I do it?

Thank you for your help

Alexander

 

[xerf]

The SDVs from VFRIC are different from those used by VUMAT.

- the first ones are defined by "*FRICTION, DEPVAR.." and are defined for contact pairs, being related to nodes (belonging to surfaces in contact)

"This array contains the user-defined solution-dependent state variables for all the nodes on the slave surface."

- the second are defined by differently by
"*MATERIAL ...." followed by
"*DEPVAR..." (in this case a separate keyword) ...
and refers to state variables related to integration points of elements.

Thus the two sets of SDVs refer to distinct points.

I am not sure if there's a way to have the VFRIC's SDVs written directly in .odb. (For example if you were to use ABAQUS/ Standard you could store them in COMMON blocks and ouput them by using UEXTERNALDB.).

Anyway, in the worst case you can write them in a file, and afterwards write a small script to read them and place them in a .odb file for post-processing purposes.