Application of Finite Element Methods to Vehicle Interior Acoustic Design

Finite Element Modeling and Harmonic Analysis of the Bus Bodywork

“…The characteristic of vibration and noise of an automobile has become an important guide line to evaluate an automobile during the development of manufacturing and comfort of automobiles. The vehicle vibration not only may accelerate fatigue failure of some parts of vehicles but also may result in acoustic resonance of the interior space of automobiles and noise acuteness due to the coupling of bodywork vibration and its interior acoustic field [1][2][3]. During the vehicle design period, finite element (FE) modal analysis and harmonic analysis can provide useful information for vehicle bodywork design.…”

Modal Analysis of Interior Acoustic Pressure Distribution of Bus Bodywork

“…The interior space of automobiles is an air space enclosed by bodywork wainscots and its acoustic mode represents the distribution of air pressure inside of the bodywork. In order to understand the acoustic modal characteristics of vehicle interior, the acoustic modal frequency and acoustic modal mode should be obtained [1,2]. During the vehicle design period, the acoustic modal analysis can provide useful information for vehicle bodywork design and avoiding acoustic resonance between the bodywork wainscots and vehicle interior cavum.…”