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Analytical investigation on mechanical buckling of FGM truncated conical shells reinforced by orthogonal stiffeners based on FSDT

http://repository.vnu.edu.vn/handle/VNU_123/28920

This work presents an analytical investigation for analyzing the mechanical buckling of truncated conical shells made of functionally graded materials, subjected to axial compressive load and external uniform pressure.

Shells are reinforced by closely spaced stringers and rings.

The change of spacing between stringers in the meridional direction also is taken into account.

Using the adjacent equilibrium criterion, the first order shear deformation theory (FSDT) and Lekhnitskii smeared stiffener technique, the linealization stability equations have been established.

The resulting equations which they are the system of five variable coefficient partial differential equations in terms of displacement components are investigated by Galerkin method.

The closed-form expression for determining the critical buckling load is obtained.

The effects of material properties, dimensional parameters, stiffeners and semi-vertex angle on buckling behaviors of shell are considered.

Shown that for thick conical shells, theuse of FSDT for determining their critical buckling load is necessary and more suitable.

 

Title: Analytical investigation on mechanical buckling of FGM truncated conical shells reinforced by orthogonal stiffeners based on FSDT
Authors: Dao Van Dung
Do Quang Chan
Keywords: Functionally graded material (FGM)
Stiffened truncated conicalshell
Buckling
Critical buckling load
First order shear deformation theory
Issue Date: 2017
Publisher: ELSEVIER SCI LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
Citation: ISIKNOWLEDGE
Abstract: This work presents an analytical investigation for analyzing the mechanical buckling of truncated conical shells made of functionally graded materials, subjected to axial compressive load and external uniform pressure. Shells are reinforced by closely spaced stringers and rings. The change of spacing between stringers in the meridional direction also is taken into account. Using the adjacent equilibrium criterion, the first order shear deformation theory (FSDT) and Lekhnitskii smeared stiffener technique, the linealization stability equations have been established. The resulting equations which they are the system of five variable coefficient partial differential equations in terms of displacement components are investigated by Galerkin method. The closed-form expression for determining the critical buckling load is obtained. The effects of material properties, dimensional parameters, stiffeners and semi-vertex angle on buckling behaviors of shell are considered. Shown that for thick conical shells, theuse of FSDT for determining their critical buckling load is necessary and more suitable.
Description: TNS07041 ; COMPOSITE STRUCTURES Volume: 159 Pages: 827-841 Published: JAN 1 2017
URI: http://repository.vnu.edu.vn/handle/VNU_123/28920
http://www.sciencedirect.com/science/article/pii/S0263822316307449
ISSN: 0263-8223
1879-1085
Appears in Collections: Bài báo của ĐHQGHN trong Web of Science

 

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