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Indexed by:期刊论文

Date of Publication:2016-01-01

Journal:JOURNAL OF THEORETICAL AND APPLIED MECHANICS

Included Journals:SCIE、EI

Volume:54

Issue:3

Page Number:705-716

ISSN No.:1429-2955

Key Words:buckling mode; combined loads; critical load; cylindrical shell; symplectic method

Abstract:Buckling behavior of cylindrical shells subjected to combined pressure, torsion and axial compression is presented by employing a symplectic method. Both symmetric and non-symmetric boundary conditions are considered. Hamiltonian canonical equations are established by introducing four pairs of dual variables. Then, solution of fundamental equations is converted into a symplectic eigenvalue problem. It is concluded that the influence of pressure on buckling solutions is more significant than that due to compressive load, in particular for a longer external pressured cylindrical shell. Besides, buckling loads and circumferential wavenumbers can be reduced greatly by relaxed in-plane axial constraints.