추진축과 스트러트 베어링 간 스틱슬립 비선형 마찰진동으로 인해 발생한 이상소음의 분석 (Analysis of the Abnormal Sound Caused by the Stick-slip Nonlinear Vibration Occurred Between Strut Bearing and Propulsion Shaft)

서지정보

· 발행기관 : 한국소음진동공학회
· 수록지 정보 : 한국소음진동공학회논문집 / 31권 / 1호 / 13 ~ 23페이지
· 저자명 : 한형석, 전수홍, 이청원, 김용훈

초록

When the propulsion shaft is rotating, friction-induced vibrations can occur between the shaft and bearing according to the lubrication condition. For ship applications, a water-lubrication bearing is usually adapted at the strut structure where the bearing is located in the water. Because the strut bearing is lubricated with seawater, the friction coefficient is greater than that for the oil-lubricated bearing and the friction coefficient varies as an exponential function of the relative velocity from the shaft to the bearing. Under this condition, the shaft system can become unstable and stick-slip nonlinear friction-induced vibration can occur. In this research, the abnormal noise caused by the stick-slip motion between the propeller shaft and strut bearing is described. Through experiment and analysis, it can be verified that the abnormal noise is caused by the stick-slip vibration.

영어초록

When the propulsion shaft is rotating, friction-induced vibrations can occur between the shaft and bearing according to the lubrication condition. For ship applications, a water-lubrication bearing is usually adapted at the strut structure where the bearing is located in the water. Because the strut bearing is lubricated with seawater, the friction coefficient is greater than that for the oil-lubricated bearing and the friction coefficient varies as an exponential function of the relative velocity from the shaft to the bearing. Under this condition, the shaft system can become unstable and stick-slip nonlinear friction-induced vibration can occur. In this research, the abnormal noise caused by the stick-slip motion between the propeller shaft and strut bearing is described. Through experiment and analysis, it can be verified that the abnormal noise is caused by the stick-slip vibration.

참고자료

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