# A question about consistent Jacobian

Hi All,

Im learning ABAQUS UMAT document,and I have a question abaout the consistent Jacobian of the Kinematic Hardening Plasticity. My question is in the attachment.

Thank you very much,).

The equation that is expressed in your attachment gives an equation for how delta sigma depends on delta strain. Have you tried to expand the terms and then collect terms in order to get each term of the Jacobian? I would think that it should be possible to get the necessary terms that way.

- Jorgen

thanks,Dr Jorgen.Im trying to get each term in Jacobian.Ill post my result here later,and I likely need your further help:grin:.Thank you.

Hi

If you are done with the umat code of the Kinematic hardening plasticity.

please send me that code i have got some problem for the same.

Thanks

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