This paper deals with the static large deflpetion and the large amplitude free flexural ibration of a symmetrically laminated orthotropic eliiptical plted with a simply equations of the plated in terms of the deflection and two inplane displacemets is presented by use of a modified Galerkin procedure. Two inplance equations of equilibrium and the associted inplance bonndary eonditions are satified axaotly. Numerical Comatations are performed for stsatic and dynamic responses of homogenceous and symmetric cross-plyelliptical plates with different axes rations, numbers of layers and high-modulus material properties. In the static and dynamic linear caasea, preent reaults are compared with avaliable data.