Nonlinear dynamic damped response of an orthotropic circular plate

Abstract

Nonlinear dynamic damped response of a clamped-immovable orthotropic circular plate subjected to step pressure pulse excitation has been presented using the dynamic von Karman equations expressed in terms of the displacement component and solved by a one-term solution applying Galerkin technique to the deflection equation. This yields an ordinary nonlinear differential equation in time. The nonlinear dynamic damped response is obtained by applying the ultraspherical polynomial approximation (UPA) technique. The influences of orthotropic and damping parameters on the dynamic response are presented.