상용 차량의 브레이크 저더 소음 원인 규명 및 저감에 관한 연구
A Study on the Identification and Reduction of Causes of Brake Judder Noise in Commercial Vehicles
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초록
There are many different causes of air drum brake judder noise in commercial vehicles. This studyset out to identify those causes from the perspective of brake structure, not taking the environment intoaccount. For that purpose, the investigator measured vibrations and noises in case of brake judder noiseand analyzed their causes. The structural vibrations of the brake were analyzed to identify the causeswith an experimental method involving O.D.S. (Operational Deflection Shape) analysis and model testing. In an effort to find directions for improvement with an analytical method, the investigator modeled thebrake system in an analytical manner, correlated it with the experiment results, and tested directions forimprovement in an analytical fashion. The structural rigidity of the brake that had been tested analyticallywas increased so that the generation frequency and structural vibration frequency of brake judder noiseswould not be contiguous. The parts of high structural rigidity were tested for brake judder noises with amodel test and vehicle test.
Abstract
There are many different causes of air drum brake judder noise in commercial vehicles. This studyset out to identify those causes from the perspective of brake structure, not taking the environment intoaccount. For that purpose, the investigator measured vibrations and noises in case of brake judder noiseand analyzed their causes. The structural vibrations of the brake were analyzed to identify the causeswith an experimental method involving O.D.S. (Operational Deflection Shape) analysis and model testing. In an effort to find directions for improvement with an analytical method, the investigator modeled thebrake system in an analytical manner, correlated it with the experiment results, and tested directions forimprovement in an analytical fashion. The structural rigidity of the brake that had been tested analyticallywas increased so that the generation frequency and structural vibration frequency of brake judder noiseswould not be contiguous. The parts of high structural rigidity were tested for brake judder noises with amodel test and vehicle test.
참고문헌 (4)
- Lee K., "Analytical Study in Brake Judder Reduction of Medium Bus", KSAE, 9(4), pp.148~156 (2001)
- Kang H., "Analysis of the effects of body structure in Brake Judder of Middle Size Bus", Proceedings of KSAE Annual Autumn, pp.792~797 (2000)
- 최병재, "상용 차량의 캡 진동 저감에 관한 연구", 한국기계기술학회지, 16(5), pp.1929~1933 (2014), 한국기계기술학회
- 박경민, "하이브리드 상용트럭 에어 브레이크 챔버 요소부품의 구조적 해석 연구", 한국기계기술학회지, 15(5), pp.717~723 (2013), 한국기계기술학회