Free vibrations of a thin, stiffened, cylindrical shallow shell

Abstract

Introduction S plates and shells have found wide applications in aircraft, spacecraft, and ships. Hence, the dynamic characteristics of stiffened plates' and shells" have been studied extensively. The purpose of the present work is to analyze the free vibrations of a stiffened shallow shell numerically by the collocation method within the frame of the theory of classical thin orthotropic shallow shells. The eccentricity of stiffeners is included through the moments of inertia of the stiff eners. The vibration characteristics of unidirectionally and orthogonally stiffened shallow shells are studied for various geometrical and material parameters.