A STUDY ON THE FREQUENCY RESPONSE OF A COMPOSITE PRE-STRESSED SYSTEM UNDER AN INCLINED HARMONIC LOADING

Goal for the present research is investigating dynamic behaviors regarding forced vibration of an elastic composite body on rigid ground four different material designations. For this purpose, effects initial stress state and frequency response parameter model are studied. Based linearized theory elasticity, nonlinear considered. The governing equations boundary-contact conditions derived using Hamilton’s principle. Total energy functional constructed based principle variational formulation, then plate-strip analyzed finite element method (FEM). Moreover, numerical examples related to influences important problem factors our mathematical given. observations show that selection more soft in upper layers has a great potential structural stability system. softer layer relatively, wave oscillation exhibits becomes regular. In addition, resonance values system decrease with increase compressing but stretching parameter.