$meshfree simulation of spall fracture$

$meshfree simulation of spall fracture$

used the reproducing kernel particle method (RKPM) to capture some features of the spall fracture including the role of inelastic wave pulses. Besides, a coarse-grained molecular dynamics with a Lennard-Jones potential is employed to simulate spall phenomena of a flyer specimen system by Krivtsov and Mescheryakov. The spall simulation of copper by planar shock loading has been investigated by molecular dynamics simulations. Due to the limitations of experiments, some researchers attempted to develop numerical models and simulation tools to study the basic features of spall fracture. However, it is still difficult for the experimental methods to precisely record the dynamical process of spall inside solids because of the short time scales. Various experiments have been conducted to observe the shock wave propagation and material failure in various solids at micro-scale level or meso-scale level. On the mesoscale level, most ceramics and metals are characterized by crystal grains and grain boundaries, heterogeneous impurities, and material defects and so on. The macroscopic spall damage is strongly depending on the mesoscale structures of material based on some experimental results. Mechanical spall is a shock wave induced dynamic fracture process, such as armor penetration and blast loads.

$meshfree simulation of spall fracture$

Meshfree simulation of spall fracture