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Are creep and damage mutually exclusive in abaqus with DP criterion ?


mehtabpathan
Posts: 8
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(@mehtabpathan)
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Hello,

I have been using Drucker Prager plasticity with creep to solve problems in crustal geodynamics. Now, I would like to improve my models by introducing damage mechanics.

I have noticed that damage and creep are exclusive with Drucker prager plasticity. Am I wrong ?

In this case, is there any way to couple both of them ?

Tank you for any advice.

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mehtabpathan
Posts: 8
Topic starter
(@mehtabpathan)
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Joined: 7 years ago

To clarify my question, I am adding some details. If I consider a material with these properties:

*Material, name=Material-visco-plas-damage

*Elastic

2.6e+10, 0.3

*Density

3000., 200.0

3000., 1800.0

*Drucker Prager

30.0, 1., 30., 0.

30.0, 1., 30., 600.

0.01, 1., 0.01,650.

0.01, 1., 0.01,2000.

*Drucker Prager Creep

9.89937e-48, 3.1, 0.0, 00.0

.....

....

3.19947e-28, 3.1, 0.0, 2000.0

*Drucker Prager Hardening, type=SHEAR,dependencies=1

....

...

...

*Damage Initiation, criterion=SHEAR

0.00001, 0., 0.00000

0.00001, 0., 100.

*Damage Evolution, type=DISPLACEMENT

0.3,

I noticed that damage is not considered in a VISCO step neither in a COULED DISPLACEMENT-TEMPERATURE step.

Has anyone faced the same problem ?

Thanks

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mehtabpathan
Posts: 8
Topic starter
(@mehtabpathan)
Active Member
Joined: 7 years ago

Any answer ?

Anybody has faced the same issue ?

thanks,

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