Analysis of Urban Bus Body Vibration and Coupling Interior Noise

Abstract

Bus body vibration and interior noise caused by vibration directly affect the ride comfort, cause driving fatigue, discomfort, and bring to the urban environmental noise pollution at the same time. Based on urban bus as the research object in the paper, the modal analyses of body structure, interior spoke and solid coupling model have been carried out by LMS. Virtual Lab software, and compared with the results of modal experiment results on body. The interior sound pressure response has been calculated under the engine incentive by using the boundary element method, and the sound pressure response curves for low frequency have been gotten. Finally, the local structure of body has been improved, and this method reaches the purpose of noise reduction by the simulation calculation. At the same time, references have been provided for improving vehicle vibration and noise.