In abaqus why drucker prager material does not ask for cohesion value??

05 September 2021 1 7K Report

i was working in the abaqus for ducker prager material , and i have to mention the cohesion value for the material ,but there was not option for cohesion , what can be reason behind it??

Charles Mareau

Dear Pardeep,

The reason is that the cohesion is evaluated from the friction angle (beta), the yield stress (sy) and the ratio between the yield stress in triaxial tension and the yield stress in triaxial compression (k). Depending on how the yield stress is defined (i.e. uniaxial tension, uniaxial compression or shear), different expressions for the cohesion can be obtained (see https://abaqus-docs.mit.edu/2017/English/SIMACAEMATRefMap/simamat-c-druckerprager.htm).

Charles

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