i am modeling progressive damage of gfrp in ansys. i used damage initiation law (DMGI) puck theory & damage evolution as instant stiffness reduction. would it give satisfactory results , can anyone recommend &if not other suggestion? please help.
Dear Aamina Rajput,
Results for damage inclusive models are highly sensitive to damage initiation and evolution parameters you're specifying for the model. I am doing damage modeling too, but for metals and found that a minor change in one of the constants can completely alter the results. It would be better if you would do a literature review for your material specific available constants and verify if those constants can give results as to what you expect it to be.
Thanks,
Ankit Varma
Though this is for CFRP, following my friend's paper may help you. This is quite highly advanced, but you may pick up some useful information. Good day.
https://www.researchgate.net/publication/222238943_Bearing_strength_and_failure_behavior_of_bolted_composite_joints_part_II_Modeling_and_simulation
Article Bearing strength and failure behavior of bolted composite jo...
Hi,
Yes for the instantanious degradation, it will give you better results. You can compare with the other failure theories.
But if you want to compare the stress strain curve in laminate, for example +-45°, then its not possible to get a good corelation with the experiments until and unless to couple either a plasticity model or some damage evolution.
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