吉林大学学报(工学版) ›› 2016, Vol. 46 ›› Issue (1): 43-49.doi: 10.13229/j.cnki.jdxbgxb201601007

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Abnormal noise analysis for commercial vehicle cab based on psychoacoustics

GAO Yin-han1, ZHANG Li-tong2, LIANG Jie1, WANG Zhi-bo1, JIANG Wen-jun3   

  1. 1.State Key Laboratory of Automotive Simulation and Control, Jilin University,Changchun 130022,China;
    2.College of Instrument Science and Electrical Engineering, Jilin University, Changchun 130061,China;
    3.R&D Center, FAW Group Corporation, Changchun 130011,China
  • Received:2014-08-20 Online:2016-01-30 Published:2016-01-30

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Abstract: In this paper three psychoacoustic parameters, loudness, sharpness and roughness, are introduced to evaluate the abnormal noise for commercial vehicle cab. The noise transfer and acoustics distribution characters of the vehicle are investigated and analyzed by means of field measurements and virtual simulation based on subjective evaluation of sound quality and frequency characteristics analysis. Identification of the abnormal cab noise is made to find a control method. The results show that the abnormal noise for commercial vehicle cab occurs at the vehicle speed of 70 km/h. the sound quality of the vehicle cab is mainly affected at the frequency ranges of 22-36 Hz and 56-90 Hz. The main reasons are the higher structure excitation near frequency 25 Hz, and the resonance coupling of the cab structure and cavity at 58 Hz by the exterior vibration and noise transfer characters, respectively. At low frequency, the interior sound pressure distribution is higher in the underside and lower in the middle at the cross-section. The loudness distribution is also higher in the underside, but not lower in the middle at the cross-section at 0-1 Bark.

Key words: vehicle engineering, abnormal noise, sound quality, psychoacoustics parameters, acoustic-structure coupling, noise distribution

CLC Number: 

  • TB53
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