A quasi-3D theory for vibration and buckling of functionally graded sandwich beams

被引：148

作者：

Vo, Thuc P. ^{[1
]}

Thai, Huu-Tai ^{[2
]}

Trung-Kien Nguyen ^{[3
]}

Inam, Fawad ^{[1
]}

Lee, Jaehong ^{[4
]}

机构：

[1] Northumbria Univ, Fac Engn & Environm, Newcastle Upon Tyne NE1 8ST, Tyne & Wear, England

[2] Univ New S Wales, Sch Civil & Environm Engn, Sydney, NSW 2052, Australia

[3] Univ Tech Educ Ho Chi Minh City, Fac Civil Engn & Appl Mech, Ho Chi Minh City, Vietnam

[4] Sejong Univ, Dept Architectural Engn, Seoul 143747, South Korea

来源：

COMPOSITE STRUCTURES | 2015年 / 119卷

基金：

新加坡国家研究基金会;

关键词：

FG sandwich beams; Vibration; Buckling; Finite element; Quasi-3D theory; SHEAR DEFORMATION-THEORY; COMPOSITE PLATES;

D O I：

10.1016/j.compstruct.2014.08.006

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

This paper presents a finite element model for free vibration and buckling analyses of functionally graded (FG) sandwich beams by using a quasi-3D theory in which both shear deformation and thickness stretching effects are included. Sandwich beams with FG skins-homogeneous core and homogeneous skins-FG core are considered. By using the Hamilton's principle, governing equations of motion for coupled axial-shear-flexural-stretching response are derived. The resulting coupling is referred to as fourfold coupled vibration and buckling. Numerical examples are carried out to investigate the thickness stretching effect on natural frequencies and critical buckling loads as well as mode shapes of sandwich beams for various power-law indexes, skin-core-skin thickness ratios and boundary conditions. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：1 / 12

页数：12

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