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Structural Engineering and Mechanics Volume 29, Number 4, July10 2008 , pages 355-380 DOI: https://doi.org/10.12989/sem.2008.29.4.355 |
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Dynamic analysis of guideway structures by considering ultra high-speed Maglev train-guideway interaction |
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Myung-Kwan Song and Yozo Fujino
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| Abstract | ||
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In this study, the new three-dimensional finite element analysis model of guideway structures considering ultra high-speed magnetic levitation train-bridge interaction, in which the various improved finite elements are used to model structural members, is proposed. The box-type bridge deck of guideway structures is modeled by Nonconforming Flat Shell finite elements with six DOF (degrees of freedom). The sidewalls on a bridge deck are idealized by using beam finite elements and spring connecting elements. The vehicle model devised for an ultra high-speed Maglev train is employed, which is composed of rigid bodies with concentrated mass. The characteristics of levitation and guidance force, which exist between the super-conducting magnet and guideway, are modeled with the equivalent spring model. By Lagrange?s equations of motion, the equations of motion of Maglev train are formulated. Finally, by deriving the equations of the force acting on the guideway considering Maglev train-bridge interaction, the complete system matrices of Maglev train-guideway structure system are composed. | ||
| Key Words | ||
| magnetic levitation train; Maglev train-guideway interaction; guideway structures; dynamic analysis; finite element analysis. | ||
| Address | ||
| Myung-Kwan Song: Renewable Energy Development Team, Corporate R&D Institute, Doosan Heavy Industries & Construction, 463-1 Jeonmin-dong, Yuseong-gu, Daejeon 305-811, Korea Yozo Fujino: Dept. of Civil Engineering, The University of Tokyo, Tokyo 113-8656, Japan | ||