MESO-SCALE MODELLING OF SHOCK WAVE PROPAGATION IN A CELLULAR GLASS PARTICLE REINFORCED THERMOPLASTIC COMPOSITE

摘要

There is increasing interest in developing novel cellular particulate composite materials for shock mitigation and high energy absorbing applications in the defense and automotive industries. However, such materials have high heterogeneous microstructures and their behavior under dynamic loading is complex. The aim of this study is to develop a comprehensive multi-scale modeling approach that accurately represents and simulates the real microstructure, morphology and behaviour of a new cellular particle reinforced thermoplastic composite under shock loading. A two-dimensional (2D) meso-scale statistical volume element (SVE) model of the material microstructure is generated. Numerical simulations are performed using the LSDYNA explicit finite element code. The influence of volume fraction (vf), particle arrangement, and particle fracture on the mechanical response and shock wave attenuation of the material is investigated.