The Analysis of the Influence of Cab Structure to Noise Under Random Excitation

Abstract

The vibration and acoustic coupling FEA of light truck cab is established using the combining way of experiment and finite element simulation in this paper. The influence of cab structure to noise under random excitation is studied by acoustic plates contribution analysis. Extract a sound pressure level of the points beside driver’s right ear. Finally, the plates that contribution a lot to acoustic are respectively front windshield, the left door, left side window, the top cover, rear floor and the front floor which provides a reference for the improvement of the cab acoustic environment in the future.