The generalized differential quadrature method for frequency analysis of a rotating conical shell with initial pressure

Using the generalized di erential quadrature (GDQ) method which is an improved version of the di erential quadrature (DQ) method, this paper examines the in uence of initial pressure load on the free vibration of a rotating thin truncated circular isotropic conical shell with di erent boundary conditions. The present governing equations of motion include the in uence of initial stress eld and the e ects of initial hoop tension and also the centrifugal and coriolis accelerations due to rotation. The in uence of initial pressure on the frequency characteristics is discussed in detail for various conditions. To validate the present analysis, frequency comparisons are made with those available in published works, and very good agreements are obtained