점성댐퍼를 갖는 엔진 크랭크 축계의 비틀림 진동 해석

다국어 초록 (Multilingual Abstract)

In this study, the torsional vibration analysis for the marine propulsion system is carried out by using the transfer matrix method(TMM). The torsional torque by gas pressure and reciprocating inertia force is caused severe torsional vibration in the shafting, which is damage to the shaft. normal torque and many harmonic torque are applied to the crankshaft and rotate the shafting. In four stroke cycle, if the cycle of the n-harmonic torque matches the natural frequency of the shaft, the torsional vibration of n/2-order is generated. In general, as a method for controlling the torsional vibration, there are various ways to change natural frequency due to the shaft diameter and the inertia moment adjustment and to reduce excitation force by firing order and crank arrangement and to lower the vibration energy by torsional vibration damper. In this paper, the viscous damper is used for reducing the torsional vibration of shafting as torsional vibration damper and it was confirmed damping effect of the torsional vibration.

목차 (Table of Contents)

• ABSTRACT
• 1. 서론
• 2. 비틀림 진동 해석을 위한 모델링
• 3. 전달행렬법을 이용한 강제진동 해석
• 4. 결론
• 참고문헌