I just wrote the Isotropic Hardening rule Fortran code (attached below), which is similar to what's available in ABAQUS library, if you have experienced with this code before, what are the parameters should be given to get same results?
I tried it once back then. They behave the same of course.
There are 3 things you need to input:
1. E: Young moulus (for example 200 MPa)
2. Poisson ratio (0.3)
3. The yield curves.. this at least 4 data points.. yield strength and strain at the bgining (for example 10 MPa, 0.00) and another yield strengt and strain to describe hardening for example 12 MPa, 0.4 strain).. so to wrap up.. you input material data should be like,