Buckling analysis of freely-supported functionally graded truncated conical shells under external pressures

被引：35

作者：

Sofiyev, A. H. ^{[1
]}

机构：

[1] Suleyman Demirel Univ, Fac Engn, Dept Civil Engn, TR-32260 Isparta, Turkey

来源：

COMPOSITE STRUCTURES | 2015年 / 132卷

关键词：

Buckling; FG truncated and complete conical shells; External pressures; Critical lateral and hydrostatic pressures; Shear deformation theory; FREE-VIBRATION ANALYSIS; ANNULAR PLATE STRUCTURES; CYLINDRICAL-SHELLS; BOUNDARY-CONDITIONS; PANELS; INSTABILITY; CYLINDERS;

D O I：

10.1016/j.compstruct.2015.06.026

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

This article presents a method to study the buckling of freely-supported functionally graded (FG) truncated and complete conical shells under external pressures in the framework of the shear deformation theory (SDT). The basic relations, modified Donnell type stability and compatibility equations have been obtained on the basis of SDT. The material properties of truncated conical shells are functionally graded in the thickness direction according to a volume fraction power law distribution. To solve this problem is used an unknown parameter 2 in the approximation functions. One of innovations is to achieve closed-form solutions for critical lateral and hydrostatic pressures of freely-supported FG truncated and complete conical shells in the framework of the SDT. The parameter A which is included in the obtained expressions is get from the minimum conditions of critical external pressures. Finally, influences of shear stresses, volume fraction index and shell characteristics on the critical lateral and hydrostatic pressures are investigated. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：746 / 758

页数：13

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