Journal of South China University of Technology(Natural Science) >

2024 , Vol. 52 >Issue 9: 104 - 114

DOI: https://doi.org/10.12141/j.issn.1000-565X.240023

Traffic & Transportation Engineering

Experimental Study on the Noise and Transmission of Automobile Door Sealing Cavity

  • ZHANG Binyu ,
  • WANG Yigang ,
  • YU Wuzhou ,
  • PENG Zining ,
  • SONG Jun ,
  • YE Bin
Expand
  • 1.School of Automotive Studies，Tongji University，Shanghai 201804，China
    2.GAC Automotive Research & Development Center，Guangzhou 511400，Guangdong，China
    3.Shanghai Key Lab of Vehicle Aerodynamics and Vehicle Thermal Management Systems，Shanghai 201804，China
    4.School of Physics Science and Engineering，Tongji University，Shanghai 200092，China
张斌瑜（1989—），男，博士，高级工程师，主要从事噪声与振动控制研究。E-mail： zhangbinyu2012@hotmail.com
俞悟周（1972—），女，博士，副教授，主要从事噪声与振动控制研究。

Received date: 2024-01-11

  Online published: 2024-04-07

Supported by

the National Key R & D Program of China(2022YFE0208000)

Fold

Abstract

The phenomenon and mechanism of sound generation and transmission of the car door sealing system with wind excitation are complex, and its research is much less.Taking the door primary sealing cavities of the B-pillar and C-pillar and the sealing cavity of the backdoor of a SUV as the research objects, this paper extracted their structures which are equivalent to regular cavity structures. It established a small acoustic wind tunnel with a testing platform and the testing method for the cavity sound generation and transmission, and conducted experiment on the sound characteristics and influencing factors, as well as the sound transmission characteristics of different compression of sealing strips and sealing gaps for the cavities with wind excitation. The results indicate that the mechanism of whistling from the door sealing cavity (backdoor cavity) is different. At low wind speeds, it is generated by coupling resonance between self-sustained oscillation and Helmholtz resonance cavity, while at high wind speeds, it is generated by coupling resonance between self-sustained oscillation and cavity mode, and self-sustained oscillation and cavity resonance with broadband excitation are the essential reasons for other peaks in the spectrum. There are significant sound characteristic differences between B-pillar and C-pillar the cavities and the backdoor cavity due to the sealing strip. The changes in yaw angle, pitch angle, and turbulence intensity of the flow have a significant impact on the amplitude and frequency of self-excited oscillation excitation, which is one of the sources of peak noise with a bandwidth below 1 000 Hz in the car. For small sealing strips compression (such as 0~4 mm) the sound transmission may increase with the increase of compression. The research on the sound phenomenon and mechanism of small cavity in car door gaps based on cavity noise theory is missing from previous studies. The sound transmission conclusion of different compression of the sealing strip has guiding significance for the design of car door seals.

Key words： car door; sealing strip; cavity noise; sound transmission; wind tunnel test

Cite this article

ZHANG Binyu , WANG Yigang , YU Wuzhou , PENG Zining , SONG Jun , YE Bin . Experimental Study on the Noise and Transmission of Automobile Door Sealing Cavity[J]. Journal of South China University of Technology(Natural Science), 2024 , 52(9) : 104 -114 . DOI: 10.12141/j.issn.1000-565X.240023

References

1 SAHA P， MYERS R D ．Importance of sealants for interior noise control of automobiles［C］∥Proceeding of the SAE Technical Paper 920412．［S.l.］：［s.n.］，1992：1-10．
2 GUR Y， MORMAN K N， SINDH N ．Analysis of door and glass run seal systems for aspiration［C］∥Proceeding of the SAE Paper 971902．［S.l.］：［s.n.］，1997：255-270．
3 徐世文，王毅刚，杨小禹，等 ．汽车车门密封结构的传声实验研究［J］．声学技术，2021，40（3）：385-392．
  XU Shi-wen， WANG Yi-Gang， YANG Xiao-yu，et al. Experimental research on sound transmission of car door sealing structure ［J］．Technical Acoustics，2021，40（3）：385-392．
4 ROCKWELL D， NAUDASCHER E ．Review-self-sustaining oscillations of flow past cavities［J］．Asme Transactions Journal of Fluids Engineering，1978，100（2）：152-165．
5 KOMERATH N M， AHUJA K K， CHAMBERS F W，et al ．Prediction and measurement of flows over cavities-a survey［C］∥Proceeding of the AIAA Paper，25th AIAA Aerospace Sciences Meeting． Reno：AIAA，1987：166．
6 顾晓卓 ．某MPV前门区域风噪啸叫与密封优化分析［J］．应用声学，2024（2）：308-314.
  GU Xiao-zhuo ．Analysis of wind noise and seal optimization in front door area of an MPV［J］．Journal of Applied Acoustics，2024（2）：308-314．
7 MONGEAU L， BEZEMEK J， DANFORTH R ．Pressure fluctuations in a flow-excited door gap cavity model［C］∥Proceedings of the SAE Paper 971923.［S.l.］：SAE International，1997：2723-2729．
8 HENDERSON B S ．Category 5：sound generation in viscous problems［C］∥Proceeding of the Fourth Computational Aeroacoustics （CAA） Workshop on Benchmark Problems 2004．Ohio：［s.n.］，2004：71-77．
9 WANG Z K， GEORGI D， LAI C H，et al ．Numerical simulation of flow-induced cavity noise in self-sustained oscillations［J］．Computing and Visualization in Science，2007，10（3）：123-134．
10 ROSSITER J E ．Wind tunnel experiments on the flow over rectangular cavities at subsonic and transonic speeds ［R］．Farnborough：Royal Aircraft Establishment，1964．
11 MA R， SLABOCH P E， MORRIS S C ．Fluid mechanics of the flow-excited Helmholtz resonator［J］．Journal of Fluid Mechanics，2009，623：1-26．
12 ELDER S A， FARABEE T M， DEMETZ F C，et al ．Mechanisms of flow-excited cavity tones at low Mach Number［J］．Journal of Acoustical Society of America，1982，72（2）：532-549．
13 LU W， LIN P， GUO H，et al ．Flow parameters in dominant mode selection of self-excited oscillation in slat coves［J］．AIAA Journal，2021，59 （8）：3195-3208．
14 PARK J， SIEGMUND T， MONGEAU L ．Sound transmission through elastomeric bulb seals［J］．Journal of Sound and Vibration，2004，259（2）：299-322．
15 PENG C， MA M ．An investigation into the effect of door seals on noise generated in the passenger compartment［J］．ImechE，1998，C521/1020：335-344．
16 GUR Y， MORMAN K N ．Sound transmission analysis of vehicle door sealing system［C］∥Proceedings of the 1999 SAE Noise & Vibration Conference．Warrendale：［s.n.］，1999：1187-1196．
17 李奇，白长安，王勇 ．汽车车门密封条隔声性能仿真分析方法介绍［J］．声学技术，2014，33（S2）：281-284．
  LI Qi， BAI Chang-an， WANG Yong ．Introduction of sound insulation performance simulation of vehicle door seals ［J］．Technical Acoustics，2014，33（S2）：281-284．
18 王晓军 ．汽车车内噪声与车身密封性的关系探讨［J］．北京汽车，2011（2）：30-32，35.
  WANG Xiao-Jun ．Exploration of the relationship between automotive interior noise and body sealing［J］．Beijing Automotive，2011（2）：30-32，35．
19 孙飞，梁波，刘建伟，等 ．汽车车门密封性能控制与风噪声改善［J］．噪声与振动控制，2015，35（2）：82-86．
  SUN Fei， LIANG Bo， LIU Jian-wei，et al ．Seal performance control of automobile doors and wind noise reduction of vehicle［J］．Noise and Vibration Control，2015，35（2）：82-86．
20 YANG Z G， YU H S， WANG Y G，et al ．Application of immersed boundary-lattice boltzmann method in failure of automobile door sealing strip［J］．Journal Automobile Engineering，2024，238（1）：187-197．
21 LIU Y， LIU P Q， GUO H，et al ． Investigation of the dominant rossiter modal tones at the locked-on state ［J］．Journal of Sound and Vibration，2023，556：117741/1-21．
22 WITTICH D ．J，ALAN C B，JUMPER E，et al．Strong flow-acoustic resonances of rectangular cavities ［J］．Aeroacoustics，2011，10（2/3）：277-294．
23 DALMONT J P， EDERVEEN C J N， OLY N J ．Radiation impedance of tubes with different flanges：numerical and experimental investigations ［J］．Journal of Sound and Vibration，2001，244（3）：505-534．
24 RONALD L ．PANTON，JOHN M M．Resonant frequencies of cylindrical Helmholtz resonators ［J］．Journal of the Acoustical Society of America，1975，57：1533-1535．
Options
Outlines

/

〈 〉