Identification of the Rear Door Opening Noise in a Passenger Car
- Authors
- Sim, Woojeong; Kim, Jaewon; Lee, Sang-soo; Lee, Booyoung; Yun, Young-uk; Chung, Jintai
- Issue Date
- Feb-2021
- Publisher
- KOREAN SOC AUTOMOTIVE ENGINEERS-KSAE
- Keywords
- Rear door opening noise; Door panels; Latch system; Multi-body dynamics analysis
- Citation
- INTERNATIONAL JOURNAL OF AUTOMOTIVE TECHNOLOGY, v.22, no.1, pp.213 - 220
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- INTERNATIONAL JOURNAL OF AUTOMOTIVE TECHNOLOGY
- Volume
- 22
- Number
- 1
- Start Page
- 213
- End Page
- 220
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/463
- DOI
- 10.1007/s12239-021-0021-7
- ISSN
- 1229-9138
- Abstract
- In this study, noises generated when opening the rear door of a vehicle are identified, which has recently been receiving renewed attention in the automotive industry. To confirm the characteristics of door opening noise, the noise and vibrations in a rear quarter panel and a rear outer door panel were measured experimentally. Furthermore, the modal testing on these panels was conducted such that the natural frequencies and mode shapes were extracted. By combining not only a noise signal but also the vibration signals and the results of modal testing, the radiation position of the peak frequencies of the door opening noise was identified. Meanwhile, a multi-body dynamics model was established and simulated for a latch system to find the source of the opening noise, and the results of the simulation were verified through simple experiments. We found that a sudden change in the contact force between a claw in the latch system and a striker excites the rear quarter panel and the rear outer door panel, resulting in a door opening noise. In addition, it was also confirmed that the noise increases with the elastic force caused by a deformation of the weather strip.
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