Lateral buckling of thin-walled composite bisymmetric beams with prebuckling and shear deformation

被引：59
|
作者：
Machado, SP
Cortínez, VH
机构：
[1] Univ Tecnol Nacl, Grp Anal Sistemas Mecan, Fac Reg Bahia Blanca, RA-8000 Bahia Blanca, Buenos Aires, Argentina
[2] Consejo Nacl Invest Cient & Tecn, RA-1033 Buenos Aires, DF, Argentina
来源：
ENGINEERING STRUCTURES | 2005年 / 27卷 / 08期
关键词：
thin-walled beams; shear flexibility; composite material; prebuckling;
D O I：
10.1016/j.engstruct.2005.02.018
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The effects of the in-plane prebackling deformations as well as the effect of shear flexibility on the lateral buckling of bisymmetric thin-walled composite beams has been investigated in this paper. The analysis is based on a geometrically non-linear theory based on large displacements and rotations. The Ritz variational method is used in order to discretize the governing equation and then the buckling loads are obtained by requiring the singularity of the tangential stiffness matrix. The numerical results show that the classical predictions of lateral buckling are inaccurate, and the considered effects should be taken into account for obtaining reliable solutions. Besides, the effects of span length and height of the load point have also been investigated for different laminate stacking sequence. (c) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1185 / 1196
页数：12
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