Delon Lee
Structural
- Oct 5, 2020
- 1
Dear all,
I encountered some problems when using the ABAQUS CDP model. Could you please give me some suggestions?
I did a monotonic uniaxial test using a single 3D solid element (C3D8R) and the CDP model. As shown in the picture attached, if tension damage is defined the maximum principle stress vs maximum principle strain relation shows strain hardening compared to the input data, while the stress and strain curve matches the input value if tension damage was not introduced. This is kind of strange as material damage should not have an effect on the stress and strain relation under monotonic loading.
Moreover, when the plane stress element (CPS4R) is used, the stress and strain relation is identical for cases with and without damage as it should.
I have also attached the input files for both the 3D and 2D models. I will be grateful if you could give me some advice.
Regards,
Delon
I encountered some problems when using the ABAQUS CDP model. Could you please give me some suggestions?
I did a monotonic uniaxial test using a single 3D solid element (C3D8R) and the CDP model. As shown in the picture attached, if tension damage is defined the maximum principle stress vs maximum principle strain relation shows strain hardening compared to the input data, while the stress and strain curve matches the input value if tension damage was not introduced. This is kind of strange as material damage should not have an effect on the stress and strain relation under monotonic loading.
Moreover, when the plane stress element (CPS4R) is used, the stress and strain relation is identical for cases with and without damage as it should.
I have also attached the input files for both the 3D and 2D models. I will be grateful if you could give me some advice.
Regards,
Delon