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Indexed by:Journal Papers

Date of Publication:2019-05-01

Journal:JOURNAL OF MECHANICS OF MATERIALS AND STRUCTURES

Included Journals:SCIE、EI

Volume:14

Issue:3

Page Number:361-392

ISSN No.:1559-3959

Key Words:axial buckling; functionally graded materials; piezoelectric nanotube-reinforced composite; cylindrical shell; analytical solution; symplectic method

Abstract:An accurate axial buckling analysis of piezoelectric functionally graded nanotube-reinforced composite cylindrical shells under combined electro-thermo-mechanical loads is performed in the Hamiltonian system. The Hamiltonian form of governing buckling equations is established based on the symplectic geometry and Reissner's shell theory. Exact solutions are expressed in terms of symplectic eigenfunctions which have five possible forms. A detailed parametric study is conducted to demonstrate the influences of geometrical parameters, boundary conditions, reinforcement nanotubes and their distribution patterns on the symplectic eigenfunctions. Furthermore, the effects of distribution patterns of nanotubes, electric voltage and temperature rise on critical buckling stresses are investigated.