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Ansys Learning Forum › Forums › Discuss Simulation › General Mechanical › Mohr-Coulomb Stress Safety Tool › Reply To: Mohr-Coulomb Stress Safety Tool

November 6, 2024 at 4:32 am
fan134
Subscriber

 

Hello Pedram,

Thank you for your response. I manually calculated the Mohr-Coulomb criterion for the elements in those regions using the predicted local maximum and minimum principal stresses. The resulting safety factor matches exactly with the one shown in the image attached to the original post. The model was created using static structural not LS-DYNA, and I used higher-order elements (CPT-216) with a sufficiently refined mesh around the hole, as shown in the attached picture. The total number of elements in the model is 13,600. Radial and hoop stress distributions were validated against analytical models. The only issue I’m encountering is with the prediction of shear failure. For your information, I used the Mohr-Coulomb failure criterion for the material as well. Is there anything else you can think of that might affect the results?

Regards,

Faysal

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