VIBRATIONAL POWER-FLOW IN BEAM-PLATE STRUCTURES WITH ISOLATION COMPONENTS

This paper presents the expressions for the vibrational power flow (VP F) in beam-plate structures (BPSs) with isolation components for three different cases: case 1 is when the isolation component 1 (IC1) is ad ded at the free end of the beam; case 2 is when the isolation componen t 2 (IC2) is embedded between the beam and the plate; case 3 is when I C1 is at the end of the beam, and IC2 is between the beam and the plat e (IC1,2). The BPS is composed of a constant-cross-section beam and a thin flat rectangular plate with four edges simply supported. Accordin g to these expressions the corresponding numerical calculations are im plemented. The influence of the parameters of the isolation components on the VPF is also considered. The calculated VPF in the structures a re compared with the corresponding measured VPF. There is good agreeme nt between them. The analytical method presented in the paper provides a tool for analysing vibrational energy transmission between the supp ort roller and the armoured plate of a tracked vehicle. Some valuable conclusions have been applied to the vibration and noise control of tr acked vehicles.