hello, i am modelling a RC slab in Abaqus, the slab is supposed to fail in punching shear which is a sudden failure. i defined the nonlinear behaviour of concrete using concrete damage plasticity model, but i can't reach the desired results as the failure is not sudden (load-deflection curve shows that the load is decreasing gradually after reaching its max value, an it's supposed to be a rapid degradation not a gradual one). as well as, i know that whenever i there is a localization of cracks somewhere in the model (which is the case in my model), using concrete damage placticity model may make the results mesh-dependant. so what should i do? should i use GFI? or do i need to use concrete smeared crack model to simulate the nonlinear behaviour of concrete instead of using concrete damage placticity model?
thank you in advance.
Dear Mohamed Sherif
These links seems to be helpful, have a look:
1. https://github.com/nasa/abaverify
2. https://github.com/superdurszlak/SubroutineTest
3. https://github.com/seungwookseok/ABAQUS-version-CDPM2
4. https://gist.github.com/franaudo/72362784ded685e4cb381e57020c9ec7
5. https://github.com/herrriehm/BeautifulABQ
6. https://github.com/nasa/abaverify/blob/master/abaverify/main.py
Kind Regards
Qamar Ul Islam
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