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1 Journal of Theoretical and Applied Mechanics

1 2016

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Combined load buckling for cylindrical shells based on a symplectic elasticity approach

Sun J., Xu X., Lim C. W.

Journal of Theoretical and Applied Mechanics

2016

Vol. 54 nr 3

705--716

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.