Plasticity & Instabilities in Metals & Metal Matrix Composites: Bridging the Dislocation & Continuum Scales

可塑性

• 批准号: 9634726
• 负责人: Hussein Zbib
• 金额: --
• 依托单位: Washington State University
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-09-15 至 2000-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9634726&HistoricalAwards=false
• 关键词: Plasticity; & Instabilities; Metals; Metal

The proposed work deals with the development of a meso-scale modeling framework for plasticity of metals and metal matrix composites and the connection between the dislocation and the continuum scales. The goal is to identify the fundamental aspects at these different scales and to gain understanding of how the different scales influence the overall mechanical behavior of materials. Scale bridging is not a novel approach but more work needs to be done in this area and the proposed work promises to make a significant contribution to the field. The ongoing collaboration with Professor Hirth of Washington State University and with Dr. Thomson of NIST are definite pluses for the proposed research. The proposed work is very ambitious and covers many aspects of materials behavior. If successful the outcome of this research will have a significant impact on future technological advances in designing and developing new materials with desirable engineering properties.

所提出的工作涉及金属和金属基复合材料的塑性和位错和连续尺度之间的连接的细观尺度建模框架的发展。目标是确定这些不同尺度下的基本方面，并了解不同尺度如何影响材料的整体力学行为。规模桥接并不是一种新颖的方法，但在这一领域需要做更多的工作，拟议的工作有望为该领域做出重大贡献。与华盛顿州立大学的Hirth教授和NIST的Thomson博士正在进行的合作对拟议的研究无疑是有利的。拟议的工作是非常雄心勃勃的，涵盖了材料行为的许多方面。如果成功，这项研究的结果将对未来设计和开发具有理想工程性能的新材料的技术进步产生重大影响。