Analytical and finite-element solutions for the buckling of composite sandwich conical shell with clamped ends under external pressure
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- 作者：Mostafa Talebitooti
- 关键词：Buckling ; Sandwich conical shell ; External pressure ; Galerkin method ; Finite ; element solution
- 刊名：Archive of Applied Mechanics
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：87
- 期：1
- 页码：59-73
- 全文大小：
- 刊物类别：Engineering
- 刊物主题：Theoretical and Applied Mechanics; Classical Mechanics;
- 出版者：Springer Berlin Heidelberg
- ISSN：1432-0681
- 卷排序：87
文摘
This paper focuses on the buckling analysis of composite sandwich conical shells subjected to a uniform external lateral pressure based on the first-order shear deformation theory. Approximate analytical solutions are assumed to satisfy fully clamped boundary conditions and then Fourier decomposition and Galerkin method is applied to achieve closed-form relations of buckling loads. The closed analytical formula for the critical pressure has been verified by comparison with the finite-element solutions and a special case where the angle of the conical shell approaches zero, that is, a cylindrical shell. Based on this formula buckling analyses of sandwich conical shells with different types of core materials have been accomplished. The outcomes are achieved considering the effects of half-vertex cone angle, core thickness and indicating applicability, accuracy, and stability of the present method.