复合材料圆筒自由边效应的有限元分析  

FINITE ELEMENT ANALYSIS FOR FREE EDGE EFFECT OF COMPOSITE CYLINDER

作　　者：孙雪坤[1] 甄立东[1] 杜善义[2] 

机构地区：[1]东北大学轧制技术及连轧自动化国家重点实验室 [2]哈尔滨工业大学复合材料研究所

出　　处：《力学与实践》1998年第5期34-37,共4页Mechanics in Engineering

摘　　要：本文分析复合材料圆筒在内压作用下的自由边效应，讨论圆筒的叠层顺序对自由边应力的影响，预报最易发生边界脱层的界面．有限元分析结果表明：层间剪切破坏是该结构发生边界失效的主要原因，不同的叠层顺序可较大地影响自由边层间剪切应力，而大变形情况下线性有限元分析结果与非线性有限元数据相差较大，几何非线性的影响不容忽视．In this paper, free edge effect of composite cylinder under internal pressure was studied. The effect of laminated sequence on stresses of free edge was discussed. It is revealed from finite element analysis that shear failure between layers is the main reason for the failure of free edge, and different laminated sequence has a big effect on the stresses between layers of free edge. Under large deformation, large difference between linear and nonlinear analytical results exists and geometrical nonlinearity must be considered.

关 键 词：复合材料 自由边效应 有限元分析 圆筒 

分 类 号：TB330.1[一般工业技术—材料科学与工程]