Coupling of Particle Blast Method (PBM) with Discrete Element Method for buried mine blast simulation

This paper presents two meshless methods: particles blast method (PBM) and discrete element method (DEM). Particle blast method (PBM) is intend to model the gaseous behavior of high velocity, high temperature detonation products. PBM is developed based on corpuscular method (CPM), which has been successfully applied to airbag deployment simulation where the gas flow is slow. For blast simulation where gas flow is extremely high, the equilibrium assumption in CPM is no long valid. By reformulating the particle interaction algorithm, we proposed the PBM that is capable of modelling thermally non-equilibrium system and applied this method for the simulation of blast loading. DEM focus on the modeling of granular media, which might exhibit complex behavior under different condition. Finally, the paper present the coupling of PBM with DEM for buried mine blast simulation.