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论文类型：期刊论文

发表时间：2016-01-01

发表刊物：JOURNAL OF THEORETICAL AND APPLIED MECHANICS

收录刊物：SCIE、EI

卷号：54

期号：3

页面范围：705-716

ISSN号：1429-2955

关键字：buckling mode; combined loads; critical load; cylindrical shell; symplectic method

摘要：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.