- #1
RKD89
- 78
- 1
I am trying to do a problem on Material Non-linearity , to model steel for large deformation , beyond yield point ,
I have tensile testing data for the steel ( in form of Engineering stress vs Engineering strain).
for defining the model , I chose Multilinear Isotropic hardening
now there are 2 options
stress vs total strain & stress vs Plastic strain
Which option should I choose ( I was asked to choose Stress vs Plastic strain )
Also , what values should I use ? Engineering stress , Engineering Plastic strain (engineering strain - engineering stress/youngs modulus ) ;
or True stress and true strain values ( I know how to calculate them )
can anyone clarify?
Also , to make it clear , I am trying to simulate a 4 point bending test , I know how to do contact analysis etc , I am only confused about the material modelling part
I have tensile testing data for the steel ( in form of Engineering stress vs Engineering strain).
for defining the model , I chose Multilinear Isotropic hardening
now there are 2 options
stress vs total strain & stress vs Plastic strain
Which option should I choose ( I was asked to choose Stress vs Plastic strain )
Also , what values should I use ? Engineering stress , Engineering Plastic strain (engineering strain - engineering stress/youngs modulus ) ;
or True stress and true strain values ( I know how to calculate them )
can anyone clarify?
Also , to make it clear , I am trying to simulate a 4 point bending test , I know how to do contact analysis etc , I am only confused about the material modelling part