The effect of 2D Particle Morphology on Shock-compacted Granular Materials*

Granular materials are crucial in a wide range of industrial applications, including civil engineering, mining technology and the energy sector. A challenge concerning particulate materials is the effect of particle morphologies (e.g., size and shape) on the rearrangement of microstructures leading to the variation in macroscopic responses. In this study, the evolution of the fabric (e.g., void volume) is explored with a wide range of particle geometry of granular materials subjected to shock compaction. The shock compression simulation is conducted via the continuum hydrodynamics code, FLAG (Free-Lagrange) enabling the dynamic compaction modeling with various conditions of packing assemblies in particle size and shape. Furthermore, this study compares the quantities of evolving mesostructure between two- and three-dimensional simulations to address the difference entailed by the dimensionality which is especially important to the spatial-induced features such as fabric in granular media. By comprehending the importance of particle morphological on the effects on dynamic response of granular materials, this study contributes to  the understanding of dependence of shock compaction response on the underlying mesostructure.