Computational method for predicting the effects of vibrations to acoustical comfort in vehicle cabin

摘要

One of the main features that attract the customer to purchase a vehicle is the vehicle acoustical and vibration comfort in the vehicle cabin. The exposed noise and vibration will affect the driver's performance in a way that the noise and vibration will distract their vision, which altogether will be stressful to the driver and passenger. Based on previous studies, vibrations are contributed by two main sources, namely the engine transmission and interaction between the tyre and road surface, while the vehicle is moving. Through this study, an approach has been done to estimate numerically the amount of noise influenced by the vibration caused by the interaction between the tyre and road surface. The studies have focused on the observation of the trends of sound quality changes over the changes of engine speeds. At the end of this study, a technical method is provided to show the correlation between the acoustical comfort exposed with the vibration caused by the interaction between tyres and road surface.