Computational Modelling of Crack Initiation and Propagation Under Nonlinear Dynamic Conditions

非线性动态条件下裂纹萌生和扩展的计算模型

• 批准号: 8514183
• 负责人: C. Fong Shih
• 金额: --
• 依托单位: Brown University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1986
• 资助国家: 美国
• 起止时间: 1986-01-01 至 1986-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8514183&HistoricalAwards=false
• 关键词: Computational; Modelling; Crack; Initiation; Propagation

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.

这项补助金是提供50个小时的超级计算机时间在第六类 用计算机模拟研究裂纹的形成过程 半韧性和韧性材料中裂纹萌生和快速扩展 非弹性材料响应和材料惯性 影响载荷传递特性。 这些研究旨在 提供应力的详细定量描述， 变形场在近端区域，并将这些近端 对整体结构行为的描述。 计算 模拟研究需要VI级计算机的计算能力。 计算结果将有助于建立裂纹的判据 在动态条件下引发、增长和停止。