I am perfoming a simulation to determine the elastic/plastic behavior of a polymer material in abaqus.To simulate the plastic behavior of the material I am using a drukcer prager model. I have performed tensile and compression tests in order to determine the input parameters in abaqus (angle of friction, and hardening data). I have encountered convergence problem when I use the linear model, so I am trying to use the hyperbolic model but I do not know how to calculate the parameters for the hyperbolic model (angle of friction, Init Tension), any guideline in how to do it?
Dear Christian Barona,
I recommend doing a hyperbolic curve-fitting on your data and obtaining the data you need. You can do this with MATLAB or Excel. Also, for more info, refer to this link: https://abaqus-docs.mit.edu/2017/English/SIMACAEMATRefMap/simamat-c-druckerprager.htm
Moreover, take a look at the links below. These are articles about the convergence issues and debugging in the ABAQUS.
https://caeassistant.com/blog/identifying-convergence-issues-abaqus/
https://caeassistant.com/blog/abaqus-errors-debugging-techniques/
Best wishes.
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