Dynamic analysis of FGM joined conical-cylindrical shells surrounded by pasternak elastic foundations based on the continuous element method

A new continuous element (CE) formulation has been presented in this paper for the vibration analysis of FGM joined conical-cylindrical shells surrounded by Pasternak elastic foundations. The differential equations of FGM conical shells are used including FGM cylindrical shells as a special case. Governing equations are obtained using thick shell theory of Reissner, taking into account the shear deflection effects.