An Orthotropic Damage and Delamination Model for Crushing Analysis of Laminated Composites

用于层压复合材料压碎分析的正交各向异性损伤和分层模型

• 批准号: 9812205
• 负责人: Arif Masud
• 金额: $ 4.87万
• 依托单位: University of Illinois at Chicago
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-06-01 至 1999-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9812205&HistoricalAwards=false
• 关键词: Orthotropic; Damage; Delamination; Model; Crushing

The accurate prediction of damage and delamination in composite automotive, aerospace, and marine structures under impact loading is addressed. The mechanisms that play an important role in the development of damage zone that eventually leads to interfacial fracture, and how the shape and size of the damage and delamination zone relates to the loading conditions and material constituents are studied. A micromechanics based damage model, a set of kinetic equations for the evolution of fracture and delamination, and a finite deformation composite shell theory are developed.

复合材料汽车，航空航天和海洋结构在冲击载荷下的损伤和分层的准确预测。损伤区的发展，最终导致界面断裂，以及如何损伤和分层区的形状和大小与加载条件和材料成分的机制，发挥了重要作用进行了研究。建立了基于细观力学的损伤模型、断裂和脱层演化的动力学方程和有限变形复合材料壳理论。