|Title||Quantitative evaluation of the effect of irregularly shaped particles in sheared granular assemblies|
|Publication Type||Journal Article|
|Year of Publication||2011|
|Authors||Matsushima T, Chang CS|
|Keywords||Discrete element method (DEM), Particle shape effect, shear strength|
Assemblies of irregularly shaped particles exhibit higher shear strengths than assemblies of circular particles. We performed a series of 2D discrete element simulations to demonstrate that this particle shape effect is related to the induced moment and the additional dilation at the contacts between particles. We proposed a mechanically based particle shape index that is closely related to such contact behavior. A simple structural model is also investigated to clarify the micromechanical role of the particle shape.