선박 추진축계 클러치 손상방지를 위한 축계 부재력 평가방법 연구
A Study on Evaluation Method of Member Forces on the Propulsion Shaft of Ship for Damage Protection of Clutch
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초록
The purpose of this study is to establish the proper evaluation method of member forces on the propulsion shaft using strain gages to confirm bearing offset. The strain measurements to find out the bending moments of the shaft have been performed in the yard to be compared with the results of the shaft alignment analysis. The clutch of the propulsion shaft is highly sensitive to shear forces as well as bending moments and the necessity of the measurement of shear forces on the shaft for normal operation of the clutch is recently on the rise. In this study, an evaluation method of the member forces (bending moments and shear forces) of the shaft clutch based on the shaft strain measurement is established. Through the application of this method to the eight 216,000 m3 LNG carriers, the safeties of the clutch systems are evaluated and the better bearing offsets are deduced for the LNG carriers. After adjusting the bearing offsets, all the sea trials of the eight LNG carriers are successfully carried out without any troubles.
Abstract
The purpose of this study is to establish the proper evaluation method of member forces on the propulsion shaft using strain gages to confirm bearing offset. The strain measurements to find out the bending moments of the shaft have been performed in the yard to be compared with the results of the shaft alignment analysis. The clutch of the propulsion shaft is highly sensitive to shear forces as well as bending moments and the necessity of the measurement of shear forces on the shaft for normal operation of the clutch is recently on the rise. In this study, an evaluation method of the member forces (bending moments and shear forces) of the shaft clutch based on the shaft strain measurement is established. Through the application of this method to the eight 216,000 m3 LNG carriers, the safeties of the clutch systems are evaluated and the better bearing offsets are deduced for the LNG carriers. After adjusting the bearing offsets, all the sea trials of the eight LNG carriers are successfully carried out without any troubles.
참고문헌 (6)
- BV, "Rules for the Classification of Steel Ships, Part C, Chapter 1, Section 7", ~ (2009)
- 정준모, "비선형 베어링 요소를 이용한 탄성 추진 축계정렬에 관한 고찰", 대한조선학회 논문집, 42(3), pp.259~267 (2005), 대한조선학회
- DNV, "Rules for Classification of Ships", High Speed, Light Craft and Naval Surface Craft, Part 4, Chapter 4, Section 1, 2008
- Kim, K.S, "Development of Bearing Reaction Force Measurement System Using Strain Gage for Propeller Shaft", Proceedings of the Annual Autumn Meeting, SNAK, pp.413~416 (2002)
- Shin, J.R, "Hull Deformation Effect on Propulsion Shaft System", Proceedings of the Annual Autumn Meeting, SNAK, pp.428~431 (2002)
- 신상훈, "선박 추진축 선미 베어링 압력 분포 해석", 대한조선학회 논문집, 41(3), pp.35~40 (2004), 대한조선학회