A molecular dynamics investigation of rapid fracture mechanics

摘要

Dynamic fracture is investigated for two-dimensional notched solids under tension using million atom systems. Brittle material and ductile material are modeled through the choice of interatomic potential functions which are Lennard-Jones and embedded-atom potentials, respectively. Numerical calculations are carried out on the IBN SP parallel computer and molecular dynamics is implemented using a spatial- decomposition algorithm. Many recent laboratory findings occur in our simulation experiments.