Postbuckling response of square laminates with a central circular/elliptical cutout

被引：60
作者：
Jain, P [1 ]
Kumar, A [1 ]
机构：
[1] Indian Inst Technol, Dept Civil Engn, Kanpur 208016, Uttar Pradesh, India
来源：
COMPOSITE STRUCTURES | 2004年 / 65卷 / 02期
关键词：
laminated plates; cutout; failure; postbuckling;
D O I：
10.1016/j.compstruct.2003.10.014
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
The finite element method is used to study the postbuckling response of symmetric square laminates with a central cutout under uniaxial compression. The formulation is based on Mindlin's plate theory and von Karman's assumptions to incorporate geometric nonlinearity. The governing finite element equations are solved using the Newton-Raphson method. For the purpose of analysis, laminates with circular and elliptical cutouts are considered with a view to examine the effect of cutout shape, size and the alignment of the elliptical cutout on the buckling and the first-ply failure loads of laminates. It is observed that these parameters have a substantial influence on the reserve strength which laminates may posses beyond buckling. (C) 2003 Elsevier Ltd. All rights reserved.
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页码：179 / 185
页数：7
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