Validation of the Rayleigh-Ritz method for the postbuckling analysis of rectangular plates with application to delamination growth

被引：17
|
作者：
Jane, KC [1 ]
Liao, HW [1 ]
Hong, W [1 ]
机构：
[1] Natl Chung Hsing Univ, Dept Appl Math, Taichung 402, Taiwan
来源：
MECHANICS RESEARCH COMMUNICATIONS | 2003年 / 30卷 / 06期
关键词：
Rayleigh-Ritz method; postbuckling deformation; rectangular delamination; energy release rate;
D O I：
10.1016/S0093-6413(03)00060-0
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
Postbuckling solutions of laminated rectangular plates are obtained by the Rayleigh-Ritz method using von Karman's nonlinear strain displacement relations and high-order polynomial expansions of the displacements. The potential energy function and the nonlinear algebraic equations governing the undetermined coefficients are obtained by Mathematica. Reasonably accurate solutions for the membrane forces, the bending and twisting moments and the pointwise energy-release rates generally require more undeterminated coefficients. Such refined postbuckling solutions show significant non-uniformity of the in-plane forces and strains and certain boundary effects characterized by concentration of the curvatures and the bending moment. (C) 2003 Elsevier Ltd. All rights reserved.
引用
收藏
页码：531 / 538
页数：8
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