Numerical Simulation Analysis of Glass Fracture Under Blast Loads

Abstract

The main methods in LS-DYNA software for the simulation of dynamic fracture behavior of glass under blast loads were introduced and reviewed. Bond-based peridynamics computational model (PD model) has significant advantages over other methods for the brittle fracture analysis, especially for three-dimensional problems. Different mesh sizes and TNT charges were investigated on the glass fracture under blast loads by PD model. Simulation results show that annular damage arises in the border of glass panel at first, then it propagates to the center quickly. After some time, radial cracks emerge in the center of the glass panel. The center glass separates forwards from the panel, while the surrounding glass splashes reversely. The more explosive mass, the less size of glass fragments.