Proceedings of the Acoustical Society of Korea Conference (한국음향학회:학술대회논문집)
- autumn
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- Pages.239-242
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- 2000
A Study on the Relationship between Sound Quality and Structural Mechanics in Automobiles
차량 구조 강성과 소음 음질간의 상관도 연구
- Choi Jongdae (NVH Team, Power-train Research Center, R&D Division, Hyundai Motor Company) ;
- Kim Sangmin (NVH Team, Power-train Research Center, R&D Division, Hyundai Motor Company)
- Published : 2000.11.01
Abstract
In the present study, the influence of car body structures to the noise and vibration characteristics has been sought. The numerical modal analysis for the body-in-white is employed to predict the vibratory response of structure, and then followed by the experimental modal testing to confirm the validity of the model. Using the results of numerical simulations with the designated modal parameters, the optimal structural configuration has been deduced. Special interests have been paid to the sensitivity of sound quality to the structural integrity. Since the structural integrity has a close relationship to the structure-born noise, the substantially low frequency range, which is far below the frequency range almost barely sensible by human auditory organ but still quite influential to overall impression, is especially examined. The subjective assessment agrees with the objective evaluation by means of traditional sound measures as well as psychoacoustic metrics.
Keywords