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디젤엔진축계 진동저감을 위한 스프링-점성 댐퍼의 매개변수 결정 연구
이동환(Lee, D.H.),정태영(Chung, T.Y.),김영철(Kim, Y.C.),신윤호(Shin, Y.H.) 한국소음진동공학회 2010 한국소음진동공학회 논문집 Vol.20 No.12
Excessive torsional vibrations from marine engine shafting systems can be reduced by using torsional vibration dampers. But in order to be tuned effectively, the dampers should be designed through the optimum design procedure. In this paper, the procedure to get the optimum values of system parameters of spring-viscous dampers using effective modal mass of inertia and stiffness is suggested and the damping is determined by the exact algebra optimization method. The validity of the suggested method is confirmed through the application to a 1800 kW four cycle diesel engine and generator system.
스프링-점성형 비틀림 진동댐퍼 설계 및 성능 평가에 관한 연구
이동환(Lee, D.H.),정태영(Chung, T.Y.),김영철(Kim, Y.C.),김흥섭(Kim, H.S.) 한국소음진동공학회 2011 한국소음진동공학회 논문집 Vol.21 No.12
Design routines of a torsional spring-viscous damper for a 1800 kW four cycle diesel engine-generator system are described. Modal techniques for system normalization and optimal equations for damper design are used to obtain proper design parameters of the damper. A prototype damper is manufactured according to the described design process and its two design parameters, stiffness and damping, are evaluated experimentally by torsional actuator test and free decay test. Experimentally obtained values of stiffness and damping coefficients showed good agreements with the designed values of the prototype damper.
이동환(D.-H. Lee),정태영(T.-Y. Chung),김영철(Y.-C. Kim),신윤호(Y.-H. Shin) 한국유체기계학회 2010 유체기계 연구개발 발표회 논문집 Vol.2010 No.12
This paper describes the design procedure of torsional vibration dampers applied to diesel engine-generator systems for the reduction of shaft torsional vibration. Firstly, the torsional vibration analysis of diesel engine-generator systems is required to confirm the necessity of dampers. If necessary, we convert the multi-degree of freedom engine-generator shaft model into a single degree of freedom one using modal analysis. Finally, we use the optimum parameter theory having the exact solution for 2-degree of freedom systems to determine optimized damper parameters. The theory and procedure are verified by applying to an existing diesel engine-generator system as an example.