한국철도학회:학술대회논문집 (Proceedings of the KSR Conference)
- 한국철도학회 2008년도 추계학술대회 논문집
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- Pages.1426-1434
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- 2008
분산형 고속전철의 34자유도 동역학적 모델링을 통한 철도차량의 동적 특성 해석
Dynamic Analysis of Railway Vehicle Using Mathematical Modeling of High-Speed EMU
초록
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.
키워드