Thermal buckling analysis of truss-core sandwich plates

被引：0

作者：

陈继伟 ^{[1
,2
]}

刘咏泉 ^{[1
]}

刘伟 ^{[1
]}

苏先越 ^{[1
]}

机构：

[1] The State Key Laboratory for Turbulence and Complex Systems (LTCS) and Department of Mechanics and Aerospace Engineering, College of Engineering, Peking University

[2] Shanghai Aircraft Design and Research Institute

来源：

AppliedMathematicsandMechanics(EnglishEdition) | 2013年 / 34卷 / 10期

关键词：

lattice core; rectangular plate; thermal buckling; parameter optimization design; stability;

D O I：

暂无

中图分类号：

O344.1 [塑性力学基本理论];

学科分类号：

080102 ;

摘要：

Truss-core sandwich plates have received much attention in virtue of the high values of strength-to-weight and stifness-to-weight as well as the great ability of impulseresistance recently. It is necessary to study the stability of sandwich panels under the influence of the thermal load. However, the sandwich plates are such complex threedimensional(3D) systems that direct analytical solutions do not exist, and the finite element method(FEM) cannot represent the relationship between structural parameters and mechanical properties well. In this paper, an equivalent homogeneous continuous plate is idealized by obtaining the efective bending and transverse shear stifness based on the characteristics of periodically distributed unit cells. The first order shear deformation theory for plates is used to derive the stability equation. The buckling temperature of a simply supported sandwich plate is given and verified by the FEM. The efect of related parameters on mechanical properties is investigated. The geometric parameters of the unit cell are optimized to attain the maximum buckling temperature. It is shown that the optimized sandwich plate can improve the resistance to thermal buckling significantly.

引用

页码：1177 / 1186

页数：10

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