Computational Modelling of Crack Initiation and Propagation Under Nonlinear Dynamic Conditions

该基金将提供50 CRAY小时的超级计算机时间，在六级计算机上进行半核和延性材料的裂纹萌生和快速裂纹扩展过程的建模研究，其中非弹性材料响应和材料惯性影响载荷传递特性。研究的目的是提供近尖端区域的应力场和变形场的详细定量描述，并将这些近尖端描述与整体结构行为联系起来。计算模拟研究需要一台VI类计算机的计算能力。计算结果将有助于建立动态条件下裂纹萌生、扩展和止裂的准则。

This grant is to provide 50 CRAY hours Supercomputer time on Class VI computer to conduct modelling studies of the process of crack initiaiton and rapid crack propagation in semiductile and ductile materials where the inelastic material response and material inertia affect the load transfer characteristics. The studies are intended to provide detailed quantitative descriptions of the stress and deformation fields in the near-tip region and to relate these near-tip descriptions to the overall structural behavior. The computational simulation study requires the computing power of a Class VI computer. The computational results will help to establish criteria for crack initiation, propagation, and arrest under dynamic conditions.