Abstract
An electromagnetic suspension (EMS) magnetic levitation (Maglev) vehicle runs between a guideway and electromagnet at a certain distance, usually called the "airgap". To maintain the vertical airgap, the electric current of the electromagnet must be controlled. A lateral restoring force is generated by a component force in the vertical direction but is not controlled. So, the EMS Maglev vehicle must be operated at appropriate speeds around curves to prevent contact with the track. This is particularly important at track sections with a small radius of curvature such as at a switch. The segmented switch system developed and employed in Korea is entirely made of steel, which may cause instabilities in the levitation system in the presence of an airgap due to its greater susceptibility to vibration compared to concrete. Therefore, it is necessary to evaluate the stability of levitation using computational simulation when the maglev vehicle ran over a segmented switch. In this paper, a dynamic model of a Maglev vehicle was developed based on multibody dynamics that accounts for the flexibility of the segmented switch track. Using the developed analytical model, levitation stability and operational safety simulations were carried out.
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References
H. S. Han, B. H. Yim, N. J. Lee, Y. J. Kim and B. H. Kim, Prediction of ride quality of a Maglev vehicle using a full vehicle multi-body dynamic model, Vehicle System Dynamics, 47 (10) (2008) 1271–1286.
H. S. Han, A study on the dynamic modeling of a magnetic levitation vehicle, JSME International, 46 (4) (2003) 1497–1501.
B. H. Yim, H. S. Han, J. K. Lee and S. S. Kim, Curving performance simulation of an EMS-type Maglev vehicle, Vehicle System Dynamics, 47 (10) (2009) 1287–1304.
H. S. Han, B. H. Yim, J. K. Lee, Y. C. Hur and S. S. Kim, Effects of Guideway’s vibration characteristics on the dynamics of a Maglev vehicle, Vehicle System Dynamics, 47 (3) (2009) 309–234.
H. S. Han, J. M. Lee, B. H. Kim, H. K. Sung and K. J. Kim, Dynamic modelling of a magnetically levitated vehicle running over a flexible guideway, Proceedings of the ECCOMAS 2007 (2007).
B. H. Yim and H. S. Han, Curve negotiation analysis of a Maglev vehicle utilizing electromagnetic suspension system, Proceedings of the Asian Conference on Multibody Dynamics 2008 (2008).
K. Fichtner and F. Pichlmeier, The Transrapid guideway switch test and verification, Proceedings of the MAGLEV 2004 (2004).
F. Dignath, X. F. Liu and Q. H. Zheng, Dynamic behavior of guideway switch beams, Proceedings of the MAGLEV 2006 (2006).
J. M. Lee, H. J. Cho, K. S. Rho and D. S. Kim, Development of Maglev switch for the urban uransit Maglev in Korea, Proceedings of the MAGLEV 2008 (2008).
D. Zhou, C. Hansen, J. Li and W. Chang, Review of coupled vibration problems in EMS maglev vehicles, International Institute of Acoustics and Vibration, 15 (1) (2010) 10–23.
LMS virtual lab motion users manual, LMS International.
E. J. Haug, Computer-aided kinematics and dynamics of mechanical system, ALLYN AND BACON Pub, USA (1989).
A. A. Shabana, Railroad vehicle dynamics: A computational approach, Taylor & Francis Group, USA (2007).
P. K. Sinha, Electromagnetic suspension dynamics & control, Peter Peregrinus Ltd, London (1987).
J. B. Han, J. K. Kim, J. M. Lee and H. S. Han, Analysis on dynamics characteristics of Maglev vehicle with considering a non-linear levitation force of electromagnet, Proceedings of the KSME 2011 (2011).
S. P. Jung and T. W. Park, Analysis and control of the flexible multibody system using MATLAB, Transactions of the Korean Society of Mechanical Engineers, 32 (5) (2008) 437–443.
J. H. Lee, J. H. Sohn, K. S. Kim and W. S. Yoo, Compari-son of large deformation of cantilever beam with computer simulation using modal coordinates, Proceedings of KSME 2002 (2002).
A. A. Shabana, Flexible multibody dynamics: Review of past and recent developments, Multibody System Dynamics, 1 (2) (1997) 189–222.
A. A. Shabana, Computer implementation of the absolute nodal coordinate formulation for flexible multibody dynamics, Multibody System Dynamics, 16 (3) (1998) 293–306.
Y. B. Yang, J. D. Yau and Y. S. Wu, Vehicle-bridge interaction dynamics with application to high-speed railway, World Scientific Pub, Singapore (2004).
T. Irvine, Effective modal mass & modal participation factors revision H (2013).
K. E. Atkinson, An introduction to numerical analysis, John Wiley & Sons Inc. (1978).
E. Coenraad, Modern railway track second edition, C. Esveld, Netherlands (2001).
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Jong-Boo Han received his B.S. degree in Mechatronics Engineering from Chungnam National University, Daejeon, Korea, in 2009. He received his M.S. degree in Mechatronics Engineering from Chungnam National University, in 2011. He is currently Ph.D. candidate of Mechatronics Engineering at Chungnam National University, Daejeon, Korea.
Hyung-Suk Han received the Ph.D. degree in mechanical engineering from Ajou University, Suwon, Korea, in 1997. Since 1997, he has been a Principal Researcher in KIMM (Korea Institute of Machinery and Materials). His research interest is the dynamic simulation of maglev vehicles.
Jong-Min Lee received his B.S. degree in Mechanical Design Engineering from Chungnam National University, Daejeon, Korea, in 1991. He received his M.S. degree in Mechanical Design Engi-neering from Chungnam National University, Daejeon, Korea, in 1993. He received his Ph.D. degree in Mechanical Design Engineering from Chungnam National University, Daejeon, Korea, in 2011.
Sung-Soo Kim received his B.S. degree in Agricultural Engineering from Seoul National University, Seoul, Korea, in 1981. He received his M.S. degree in Mechanical Engineering from University of Iowa, Iowa city, Iowa, U.S.A., in 1983, and his Ph.D. degree in Mechanical Engineering from University of Iowa, Iowa city, Iowa, U.S.A., in 1988. He is currently a Professor of Mechatronics Engineering at Chungnam National University, Daejeon, Korea.
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Han, JB., Han, HS., Lee, JM. et al. Dynamic modeling and simulation of EMS Maglev vehicle to evaluate the levitation stability and operational safety over an elastic segmented switch track. J Mech Sci Technol 32, 2987–2998 (2018). https://doi.org/10.1007/s12206-018-0602-1
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DOI: https://doi.org/10.1007/s12206-018-0602-1