Mesoscale Computational Investigation of Shocked Heterogeneous Materials with Application to Large Impact Craters

摘要: The propagation of shock waves through target materials is strongly influenced by the presence small-scale structure, fractures, physical and chemical heterogeneities. Pre-existing fractures often create craters that appear square in outline (e.g. Meteor Crater). Reverberations behind from heterogeneity have been proposed as a mechanism for transient weakening materials. can also affect melt generation. In this study, we are attempting to bridge gap numerical modeling between micro-scale continuum, so-called meso-scale. To accomplish this, developing methodology be used physics hydrocode (CTH) using Monte-Carlo-type methods investigate properties heterogeneous By comparing results experiments at with experimental statistical techniques evaluate performance simple constitutive models, hope embed effect into field variables (pressure, stress, density, velocity) allowing us directly imprint effects continuum level without incurring high computational cost.