表面割口复合材料叠层板的应力集中分析  

Stress Concentration Analysis for Surface Notched Laminates

作　　者：李冬梅[1] 

机构地区：[1]广东水利电力职业技术学院,广东广州510635

出　　处：《广东水利电力职业技术学院学报》2007年第3期51-54,共4页Journal of Guangdong Polytechnic of Water Resources and Electric Engineering

摘　　要：为揭示表面割口单向纤维增强复合材料叠层板的拉伸破坏机理,预估其破坏规律,基于剪滞理论,建立一种对各单层分划为有限子单元的剪滞分析模型,分析含表面割口的单向叠层板在拉伸载荷作用下的应力重新分布问题,获得表面割口附近完整纤维的应力集中因子。In order to reveal the tensile failure mechanism and to predict the failure rule of the surface notched composite laminates,a shear-lag model that each lamina in laminate is divided into finite sub-elements was set up on the basis of the shear-lag theory.As a result,the stress redistributions for surface notched unidirectional laminates under tension were analyzed and the stress concentration factors in intact fibers at root of the surface notch were obtained.

关 键 词：表面割口单向叠层板 拉伸 子单元 剪滞分析 应力集中 

分 类 号：O31[理学—一般力学与力学基础]