Abstract: Dynamic contact problems are frequently analyzed by using interface finite elements (penalty elements) and explicit time integration. A major difficulty with such procedures is the selection of a time increment that provides ...

Abstract: A constitutive law for dilatant frictional behavior is reviewed. It is developed by distinguishing between the macrostructural and raicrostructural features of a material discontinuity. Macrostructural considerations provide ...

Abstract: Using the discrete element method (DEM) with clustering, a novel means of numerically modeling damage of particles is presented. Damage, such as grain crushing, is treated by allowing clusters to break apart according to ...

Abstract: This paper presents a detailed computational investigation of the effect of particle shape on the interface shear behavior of granular materials. The discrete element method (DEM) using clusters to model rough particles ...