The Drucker-Prager model was developed by Drucker and Prager (1952) to solve the numerical problems that occur on the corners of the yield shape of the Mohr-Coulomb model. The internal algorithm is the same as the Mohr-Coulomb model, and the material constant can be related to the existing cohesion () and friction angle () of the Mohr-Coulomb model.

<Drucker-Prager>