Evaluation of vibration transmission of L-shaped plates using finite element analysis

Abstract

In this paper, velocity level difference through L-shaped plates is studied using finite element analysis (FEA). Validation is performed using experimental measurements and comparing different finite elements models. The velocity level difference between the source and receiving plate is used to study how vibration flows for third-octave frequency bands, within the frequency range 40-3150 Hz. The influence of different types of geometry, material properties, meshes, types of excitations and the incorporation of an elastic layer, simulating a floating floor, were studied. The use of finite elements models with 2D elements proved to be adequate and a good approximation was obtained from both experimental and finite element analysis results.