Exploring Spatio-Temporal Instabilities of Plastic Deformation and Fracture

探索塑性变形和断裂的时空不稳定性

• 批准号: 9310476
• 负责人: Elias Aifantis
• 金额: $ 3.6万
• 依托单位: Michigan Technological University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-10-01 至 1996-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9310476&HistoricalAwards=false
• 关键词: Exploring; Spatio; Temporal; Instabilities; Plastic

9310476 Aifantis The work will explore the adaptation of recent methods of nonlinear physics in interpreting a variety of plastic flow and fracture phenomena exhibiting pattern formation and periodicity. The occurrence of dislocation patterns, regularly spaced shear or rotational bands and cracks, periodic velocity profiles and step- like crack growth in stick-slip fracture, are some of the examples to be considered from a unifying point of view. Emphasis will be placed in providing qualitative explanations and quantitative models for problems that could not be addressed by using standard approaches. ***

9310476 Aifantis这项工作将探索适应非线性物理学的最新方法，解释各种塑性流动和断裂现象，表现出图案的形成和周期性。 出现位错图案，规则间隔的剪切或旋转带和裂纹，周期性的速度分布和阶梯状裂纹增长的粘滑断裂，是一些例子，要考虑从一个统一的观点。 重点将放在为无法通过使用标准方法解决的问题提供定性解释和定量模型。 ***