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Indexed by:期刊论文

Date of Publication:2010-06-01

Journal:INTERNATIONAL JOURNAL OF STRUCTURAL STABILITY AND DYNAMICS

Included Journals:EI、SCIE

Volume:10

Issue:2

Page Number:273-286

ISSN No.:0219-4554

Key Words:Cylindrical shell; Hamiltonian system; thermal buckling

Abstract:The paper deals with the thermal buckling of cylindrical shells in a uniform temperature field based on the Hamiltonian principle in a symplectic space. In the system, the buckling problem is reduced to an eigenvalue problem which corresponds to the critical temperatures and buckling modes. Unlike the classical approach where a predetermined trial shape function satisfying the geometric boundary conditions is required at the outset, the symplectic eigenvalue approach is completely rational where solutions satisfying both geometric and natural boundary conditions are solved with complete reasoning. The results reveal distinct axisymmetric buckling and nonaxisymmetric buckling modes under thermal loads. Besides, the influence for different boundary conditions is discussed.