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[학술저널]

  • 학술저널

박상윤(Chungnam National University) 한국현(Samyoung Machinery) 송오섭(Chungnam National University)

DOI : 10.5050/KSNVE.2017.27.5.593

UCI(KEPA) : I410-ECN-0101-2018-424-001318880

초록

In order to reduce the torsional vibration of an engine-driveshaft system, usually torsional viscous damper is designed and attached to the main system. Optimum damping coefficient for reducing the vibration is determined in consideration of the natural frequencies of engine-shaft system as well as the moment of inertia of damper itself. Previous research on the design of torsional damper is based on the time-invariant moment of inertia assumption even though the parts of engine-shaft system such as crank arm, crankshaft, connecting rod, and piston are moving, and as a results, the system is of time-varying nature. Furthermore, when the variation in the natural frequency of the real system is relatively large and nevertheless damper is designed on the basis of time-invariant assumption, then optimum damping coefficient may be determined differently from the desired optimum value. It would aggravate the damping effect and stability criterion. In this study, optimum damper design is carried out on the basis of variable natural frequencies of the system and the various parameters (moment of inertia, viscosity, and dimensions) of damper itself.

목차

ABSTRACT
1. 서론
2. 점성댐퍼의 최적 감쇠 설계
3. 점성댐퍼를 갖는 엔진-회전축계의 비틀림 진동 해석 모델
4. 점성댐퍼의 감쇠효과
5. 결론
References

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