NONLINEAR BUCKLING BEHAVIOR OF 3D-BRAIDED COMPOSITE CYLINDRICAL SHELLS SUBJECTED TO INTERNAL PRESSURE LOADS IN THERMAL ENVIRONMENTS

被引：1
作者：
Li, Z. -M. [1 ]
Gu, W. [2 ]
Chen, X. -D. [3 ]
Hu, H. [4 ]
机构：
[1] Shanghai Jiao Tong Univ, Sch Mech Engn, Shanghai Key Lab Digital Autobody Engn, Shanghai 200240, Peoples R China
[2] Shanghai Composite High Tech Dev Co Ltd, Shanghai 201112, Peoples R China
[3] Beijing Jiao Tong Univ, Sch Mech Elect & Control Engn, Beijing 100044, Peoples R China
[4] Zhejiang Text & Fash Coll, Mech Elect & Informat Engn Sch, Ningbo 315211, Zhejiang, Peoples R China
来源：
MECHANICS OF COMPOSITE MATERIALS | 2011年 / 47卷 / 04期
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
3D-braided composites; cylindrical shell; higher-order shear deformation theory of shells; nonlinear buckling; internal pressure; NEAR-THE-SURFACE; WOVEN;
D O I：
10.1007/s11029-011-9224-8
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
The nonlinear buckling behavior of a 3D-braided composite cylindrical shell of finite length subjected to internal pressure in thermal environments is considered. According to a new micromacromechanical model, a 3D-braided composite may be treated as a cell system where the geometry of each cell strongly depends on its position in the cross section of the cylindrical shell. The material properties of the epoxy matrix are expressed as linear functions of temperature. The governing equations are based on Reddy's higher-order shear deformation theory of shells with a von Karman-Donnell-type kinematic nonlinearity and include thermal effects. The singular perturbation technique is employed to determine the buckling pressure and the postbuckling equilibrium paths of the shell.
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页码：461 / 480
页数：20
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