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论文类型：期刊论文

发表时间：2014-01-01

发表刊物：JOURNAL OF THEORETICAL AND APPLIED MECHANICS

收录刊物：SCIE、EI

卷号：52

期号：3

页面范围：641-653

ISSN号：1429-2955

关键字：buckling; cylindrical shells; external pressure; Hamiltonian system

摘要：In this article, the elastic buckling behavior of cylindrical shells under external pressure is studied by using a symplectic method. Based on Donnell's shell theory, the governing equations which are expressed in stress function and radial displacement are re-arranged into the Hamiltonian canonical equations. The critical loads and buckling modes are reduced to solving for symplectic eigenvalues and eigenvectors. The buckling solutions are mainly grouped into four categories according to the natures of the buckling modes. The effects of geometrical parameters and boundary conditions on the buckling loads and modes are examined in detail.