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Acoustic Analysis of Truck Cab
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English
Abstract
This paper presents the results of acoustic analyses of light duty truck cabs by actual vehicle testing and by numerical analysis utilizing the boundary element method (BEM).
In the resonance mode analysis using BEM, by taking into account the vibration characteristics of cab panels, the presence of the modes other than the purely acoustic cavity resonance modes were confirmed.
The contribution of the panel vibrations to booming noise that occurs in actual light duty trucks was analyzed. BEM analysis showed that some of the panel vibration had a negative contribution to booming noise. In other words, decreasing vibration in such a section was shown to increase sound pressure. The results of the BEM analysis match well with actual test results.
It has thus been demonstrated that BEM is an effective method for analyzing truck interior noise reduction.
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Citation
Katsuta, T., Matsuda, A., and Hamada, S., "Acoustic Analysis of Truck Cab," SAE Technical Paper 911075, 1991, https://doi.org/10.4271/911075.Also In
References
- Ushijima, T. et al. “High Performance Hydraulic Mount for Improving Vehicle Noise and Vibration” SAE Paper 880073
- Ishiyama, S. et al. “The Applications of ACOUST/BOOM-A Noise Level Predicting and Reducing Computer Code” SAE Paper 880910
- Matsumoto, F. et al. “Acoustic Analysis Program by Boundary Element Method (BEM)” FUJITSU 39 2 195 1988
- Wolf, J.A., Jr. et al. “Stracyural-Acoustic Finite Element Analysis of the Automobile Passenger Compartment” SAE Paper 760184