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A question about consistent Jacobian

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Posts: 2
Topic starter
(@Cricketer)
New Member
Joined: 15 years ago

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,).

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Posts: 3993
(@jorgen)
Member
Joined: 4 years ago

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

3 Replies
Posts: 2
Topic starter
(@Cricketer)
New Member
Joined: 15 years ago

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.

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Posts: 1
(@Mahdi)
New Member
Joined: 9 years ago

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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