Reply To: Mohr_Coulomb material model (MAT_173)

[Pedram Samadian]

Hi,

Please check the following thoughts about the possible sources of error:

• Ensure you are outputing a right variable for the shear stress. The "maximum shear stress" needs to be output, not any shear stress components in the stress tensor. 
• Revisit the input material parameters in the material card and verify their values and unit consistency. LS-DYNA Theory Manual and Keyword User's Manual (LSDYNA Manuals) are good resources for the better understanding of this material card and its parameters.
• Make sure that the material passes the yield strength. 
• Use a fully integrated elemen type.
• Run the model with multiple elements to see if you can get what expected.

I hope there are helpful.

Thanks,

Pedram