Cam Clay

[r_bortolotto]

I would like to know if Cam Clay constitutive elasto-plastic law is computed
in the code (classic Cam Clay or modified?).
If so, where can I find it? I mean the subroutine that compute the return
mapping procedure, where input are trial stress (and material parameters),
while output are updated stress and plastic strain.
Can anybody help me?

Thanks in advance
Bye
Roberto