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论文类型：期刊论文

发表时间：2019-05-01

发表刊物：JOURNAL OF MECHANICS OF MATERIALS AND STRUCTURES

收录刊物：SCIE

卷号：14

期号：3

页面范围：361-392

ISSN号：1559-3959

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

摘要：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.