The Constitutive Equation of Porous Materials under Shock Wave Loading

This paper modifies the constitutive equation of the porous materials by introducing a new variable v instead of , which describes the occupation ratio of non-zero pressure matrix volume in porous materials. The new equation p＝vF(v, E) solves the problem the p- model encountered when it is applied to partially melt porous materials. The result of the numerical simulation shows that this modification is reasonable and feasible, and is of valuable for numerical simulation to porous materials under shock wave loading.