http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
분산형 고속전철의 34자유도 동역학적 모델링을 통한 철도차량의 동적 특성 해석
이래민(Lee Rae-Min),이필호(Lee Pil-Ho),이상원(Lee Sang-Won),구자춘(Koo Ja-Choon),최연선(Choi Yeon-Sun) 한국철도학회 2008 한국철도학회 학술발표대회논문집 Vol.- No.-
This paper addresses the numerical study on the dynamics of the High-speed EMU to enhance the ride quality. The 17 and 34 degrees-of-freedom (DOF) dynamic models for a single railway vehicle are proposed, and its vibrational characteristics according to the nonuniform rail profile are analyzed via Matlab. The validity of the proposed 34-DOF model are verified by comparing its dynamic characteristics and those from ADAMS/Rail. In addition, the critical dynamic parameters are identified by the parametric analysis, and rough design variables to reduce the vibration level of the railway vehicle are proposed. Finally, the frequency analysis - FFT - are conducted to extract the resonant frequencies, which have a significant influence on the determination of the critical speed of the railway vehicle. It is demonstrated that the results from the Matlab-based numerical analysis of the 34-DOF dynamic model are similar to those from ADAMS/Rail.
크리피지를 고려한 분산형 고속전철의 34 자유도 동적해석
이래민(Lee Rae-Min),이필호(Lee Pil-Ho),김주섭(Kim Ju-Sub),구자춘(Koo Ja-Choon),최연선(Choi Yeon-Sun),이상원(Lee Sang-Won) 한국철도학회 2009 한국철도학회 세미나자료 Vol.2009 No.5
This paper discusses the numerical study on the dynamics of the high-speed EMU by developing the 34 degrees-of-freedom (DOF) lumped parameter model including the effect of the creepage. In order to reflect the creepage, the Kalker's wheel-rail contact theory is introduced in the proposed model. The dynamic analysis using Matlab<SUP>?</SUP> software is conducted, and its results are compared with those from ADAMS/Rail to investigate the validity of the proposed 34-00F lumped parameter model. It is demonstrated that the results from the numerical study are similar to those from ADAMS/Rail. In addition, the critical design parameters of high-speed EMU are examined, and the design guidelines for reducing vibration and enhancing ride quality are proposed.
이래민(Rae-Min Lee),구자춘(Ja-Choon Koo),최연선(Yeon-Sun Choi),이상원(Sang Won Lee) 한국철도학회 2010 한국철도학회 학술발표대회논문집 Vol.2010 No.7
This paper discusses the numerical study on the stability of the high-speed EMU by developing its lumped parameter model including the effect of the creepage. The 6, 10 and 14 degrees-of-freedom (DOF) lumper parameter dynamic models are developed and the critical hunting speeds calculated from each model via Matlab software are analyzed and compared . It is demonstrated that the critical hunting speeds decrease while the degrees-of-freedom increase. In addition, the parametric study is conducted to extract major design parameters to influence on the stability of the high-speed EMU.
백승국(Baek Seung-Guk),이래민(Lee Rae-Min),신범식(Shin Bum-Sik),이상원(Lee Sang-Won),구자춘(Koo Ja-Choon),최연선(Choi Yeon-Sun) 한국철도학회 2008 한국철도학회 학술발표대회논문집 Vol.- No.-
High-speed train under development is a type of EMU(electric multiple units). Since power sources like motors and gears are distributed in the high-speed EMU, the high-speed EMU generates vibration and sound more than the articulated high-speed train. Vibration of vehicle, vibration between rails and wheels, hunting of bogie and snake motion reduce ride comfort. In this paper, to decrease the vibration of the articulated high-speed train, improvements were presented using an analytical model and a simulation model. The simulation model of the high-speed EMU was designed on the basis of the korean high-speed train and the design parameters for ride comfort were showed and the dynamic characteristics of the vehicle was understood. To consider the characteristics of the vehicle suspension, the analytical model was designed and the simulation model was verified with it.
분산형 고속전철 차량 현가장치의 주요강성이 차량진동에 미치는 영향
백승국(Seung-Guk Baek),박기수(Ki-Soo Pack),신범식(Bum-Sik Shin),이래민(Rae-Min Lee),이상원(Sang-Won Lee),구자춘(Ja-Choon Koo),최연선(Yeon-Sun Choi) 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.5
The Korean high speed train (G7) is developed as a type of the concentrated-power train. The next generation high speed train is being under development as a type of distributed-power train. The architecture of a bogie of distributed-power train differs from the one of G7. Hence, a new architecture design is required for the distributed-power train. In addition to bogie, current EMU design should be modified for the application to the distributed-power train. It is difficult to apply making EMU to make distributed-power train. Since the current EMU is a low speed model. In this study a set of design parameter study has been performed for reduction of vibration. Although dynamics of a single power car is considered, the study result may implicate overall design strategy for next generation high speed train.