Can somebody tell me about the parameters in J2 plasticity.
nDMaterial('J2Plasticity', matTag, K, G, sig0, sigInf, delta, H)
What are delta and H ?
How to calibrate them from experimental stress-strain curve ?
https://opensees.berkeley.edu/wiki/inde ... y_Material
For linear strain hardening, you can set delta=0 then select H to match a desired plastic stiffness like what's described here:
https://portwooddigital.com/2021/05/19/ ... libration/
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