Applied Mathematics and Mechanics >
Buckling analysis of functionally graded material (FGM) sandwich truncated conical shells reinforced by FGM stiffeners filled inside by elastic foundations
Received date: 2015-11-20
Revised date: 2016-03-08
Online published: 2016-07-01
Supported by
Project supported by the Vietnam National Foundation for Science and Technology Development (No. 107.02-2015.11)
An analytical solution for buckling of an eccentrically stiffened sandwich truncated conical shell is investigated. The shell consists of two functionally graded material (FGM) coating layers and a core layer which are metal or ceramic subjected to an axial compressive load and an external uniform pressure. Shells are reinforced by stringers and rings, in which the material properties of shells and stiffeners are graded in the thickness direction following a general sigmoid law distribution. Two models of coated shell-stiffener arrangements are investigated. The change of the spacing between stringers in the meridional direction is taken into account. A couple set of three-variablecoefficient partial differential equations in terms of displacement components are solved by the Galerkin method. A closed-form expression for determining the buckling load is obtained. The numerical examples are presented and compared with previous works.
D. V. DUNG, L. K. HOA, B. T. THUYET, N. T. NGA . Buckling analysis of functionally graded material (FGM) sandwich truncated conical shells reinforced by FGM stiffeners filled inside by elastic foundations[J]. Applied Mathematics and Mechanics, 2016 , 37(7) : 879 -902 . DOI: 10.1007/s10483-016-2097-9
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