3D复合材料中非线性纤维搭桥下脱层的屈曲和初始后屈曲  

Buckling and initial post-buckling of delamination bridged by nonlinear fibers in 3D composites

作　　者：陈文伟[1] 李四平[1] 卢方伟[1] 

机构地区：[1]上海交通大学工程力学系,上海200030

出　　处：《固体火箭技术》2005年第3期222-223,227,共3页Journal of Solid Rocket Technology

摘　　要：建立了缝纫层合板和编织复合材料等3D复合材料中非线性纤维搭桥下脱层屈曲的计算模型,根据最小总势能原理分析了脱层屈曲和初始后屈曲问题,得出了非线性纤维搭桥下脱层屈曲的一些重要特征,预报了强化型非线性搭桥脱层初始后屈曲的稳定性和软化型搭桥初始后屈曲的不稳定性。The calculation model on buckling of delamination bridged by nonlinear fibers in composites was derived for stitching laminated board and 3D woven composite. Based on minimum total potential energy principle, buckling and initial post-buckling of delamination were analyzed. Some important characteristics on buckling of delamination bridged by nonlinear fibers were obtained. Finally stability of initial post-buckling of enhanced delamination bridged by nonlinear fibers and unstability of initial post-buckling of softened delamination bridged by nonlinear fibers were predicted.

关 键 词：三雏复合材料 脱层 屈曲 非线性纤维搭桥 

分 类 号：TB332[一般工业技术—材料科学与工程]