Abstract
Asymmetric buckling analysis of orthotropic pressure vessels, subjected to uniform external pressure is carried out. Sanders' nonlinear thin shell theory is employed to derive the buckling equations. The prebuckling state is represented by a linear axisymmetric bending state. The differential equations governing the prebuckling and buckling states are solved by numerical integration method using fourth order Runge-Kutta scheme. Results are presented for cylindrical pressure vessels with: (1) spherical attachment (2) torispherical head. The effect of L/R ratio ( L and R are length and radius of cylinder) on the buckling behaviour is investigated.
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