Studies in Fracture- and Materials-Mechanics

断裂力学和材料力学研究

• 批准号: 8416392
• 负责人: John Hutchinson
• 金额: $ 16.55万
• 依托单位: Harvard University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1985
• 资助国家: 美国
• 起止时间: 1985-09-30 至 1988-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8416392&HistoricalAwards=false
• 关键词: Studies; Fracture; Materials; Mechanics

The primary objective of this research is to develop improved constitutive characterizations for plastically deforming solids containing cracks. Steady state crack growth for dynamic and quasi-static conditions will be investigated to establish the parameters controlling the transition of crack growth from a high strain-rate dependent growth to a strain-rate independent growth. The results of this study will make fundamental contributions to assess the impact of voids and microcracks on the deformation and failure of plastic solids.

本研究的主要目的是为含有裂纹的塑性变形固体开发改进的本构表征。将研究动态和准静态条件下的稳态裂纹扩展，以建立控制裂纹从高应变速率依赖扩展到不依赖应变速率扩展转变的参数。该研究结果将为评价孔隙和微裂纹对塑性固体变形破坏的影响做出基础性贡献。