Simulations of single and double shock experiments using generalized interpolation material point method with a noise control strategy

摘要: This paper presents an elaborated discussion on numerically handling single and double shock problems via the implementation of a meshless method, namely the generalized interpolation material point (GIMP) method. Oxygen-free high thermal conductivity copper and aluminum materials were considered. The capability of GIMP to accurately simulate such type of shock wave propagation problem is demonstrated and discussed via the 2-D plane strain solid mechanics formulation. GIMP is a modified material point method (MPM) that has been developed as an excellent numerical tool to solve dynamic problems involving large deformation, penetration, and fragmentation. However, double-flyer impact problem has rarely been simulated by using such a meshless method tool. In this work, the development and implementation of a set of well-tuned parameters are presented for modeling and analysis of both …