Vibration isolation performance analysis of laminated double-layer rectangular plate structure

Based on the spectral geometry method, the analytical model of laminated double-layer rectangular plate including elastic floating raft damping system is established. The artificial virtual technology is used to simulate the elastic boundary conditions of the laminated deck, and the three-dimensional damping isolator and elastic raft plate are used to simulate the floating raft damping system. Based on energy principle, the solution equation of vibration characteristics of laminated double-layer rectangular plate system is obtained by Rayleigh Ritz method. Compared these results with finite element method, the reliability of the model is verified. Then the effects of different parameters on the dynamic characteristics of double plate structure are further discussed.