Reduction of Road Noise by the Investigation of Contributions of Vehicle Components

The mobility technique is used to analyze the transfer functions of road noise between the suspension and the body structure. In the previous analyses, the suspension system and the body structure are altogether modeled as subsystems in the noise transfer path. In this paper, the mobility between the suspension and the body structure is analyzed by the dynamic stiffness at the connecting points. The measured drive point acceleration FRF at the connecting point in the transfer path was used to estimate the contributions of subsystems. The vibration modes of tire, the acoustic noise of tire's interior cavity, the vibration modes of the car's interior room, and the vibrations of body structure and the chassis are also considered to analyze the coupling effects of the road noise. Analyzing the measured results, direction for modification of car components is suggested. The road noise around 250Hz in car's interior room is reduced by the modifications of the housing panel near the rear suspension.

• Record URL:
  • https://doi.org/10.4271/2003-01-1718
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/01487191
• Supplemental Notes:
  • Abstract reprinted with permission of SAE International.
• Authors:
  • Kim, Myung-Gyu
  • Jo, Jae-Sung
  • Sohn, Jeong-Hyun
  • Yoo, Wan-Suk
• Conference:
  • SAE 2003 Noise & Vibration Conference and Exhibition
  • Location: Grand Traverse Michigan, United States
  • Date: 2003-5-5 to 2003-5-8
• Publication Date: 2003-5-5

Language

• English

Media Info

• Media Type: Web
• Serial:
  • SAE Technical Paper
  • Publisher: Society of Automotive Engineers (SAE)
  • ISSN: 0148-7191
  • EISSN: 2688-3627
  • Serial URL: http://papers.sae.org/

Subject/Index Terms

• TRT Terms: Mechanical acceleration; Mobility; Noise; Pitch (Acoustics); Roads; Suspension systems; Tires; Vehicle bodies; Vibration
• Subject Areas: Highways; Vehicles and Equipment;

Filing Info

• Accession Number: 01802383
• Record Type: Publication
• Source Agency: SAE International
• Report/Paper Numbers: 2003-01-1718
• Files: TRIS, SAE
• Created Date: Dec 9 2021 10:24AM