Presidential Young Investigator Award: Fracture Mechanics and Plasticity

总统青年研究员奖：断裂力学和塑性

• 批准号: 8552486
• 负责人: Walter Drugan
• 金额: $ 25.69万
• 依托单位: University of Wisconsin-Madison
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1986
• 资助国家: 美国
• 起止时间: 1986-06-30 至 1992-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8552486&HistoricalAwards=false
• 关键词: Presidential; Young; Investigator; Award; Fracture

This award supports research in analytical solid mechanics, with principal areas of specialization being fracture mechanics and plasticity. Much of this research is directed toward the development of the theoretical foundations of non-linear fracture mechanics. A principal thrust is the analysis and prediction of stable crack growth and its transition to catastrophic fracture in elastic-plastic materials. One objective is to develop an approximate analytical method for assessing how different loadings and specimens affect near-tip elastic-plastic fields. Crack growth and instability criteria are then based on the near-tip fields derived. An ultimate goal is to develop analytical criteria capable of predicting ductile crack growth throughout the range from initial well-contained yielding up through large-scale and general yielding.

该奖项支持分析固体力学的研究， 主要专业领域是断裂力学， 可塑性 大部分研究都是针对开发 非线性断裂力学的理论基础。 一 主要研究方向是裂纹稳定扩展的分析和预测 在弹塑性条件下， 材料. 目标之一是开发一个近似分析 评估不同载荷和试样如何影响的方法 近端弹塑性场 裂纹扩展和失稳准则 然后基于近端场推导。 最终目标是 发展能够预测延性裂纹扩展的分析准则 在整个范围内，从最初的良好控制的屈服到 大规模和普遍屈服。