• Title/Summary/Keyword: vehicle/guideway coupled model

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Modeling of the Maglev Vehicle Running over the Elevated Guideway Using Flexible Multibody Dynamics (유연다물체 동역학을 이용한 자기부상열차 동역학 모델링 연구)

  • Lee, Jong-Min;Kim, Young-Joong;Kim, Kuk-Jin;Kim, Dong-Sung;Kim, Sook-Hee;Han, Hyung-Suk
    • Journal of the Korean Society for Railway
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    • v.9 no.6 s.37
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    • pp.792-797
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    • 2006
  • In general, the Maglev vehicle is ran over the elevated guideway consisted of steel or concrete structure. Since the running behaviour of the vehicle is affected by the flexibility of the guideway, the consideration of the flexibility of guideway is needed for evaluation of dynamics of both the vehicle and guideway. A new technique based on flexible multibody dynamics is proposed to model the Maglev vehicle, levitation controller, and guideway into a coupled model. To verify the technique, an urban Maglev vehicle is analyzed using the technique and discussions are carried out.

Modeling of the Maglev Vehicle Running over an elevated Guideway Using Flexible Multi-body Dynamics Based on the Model Superposition Method (모드중첩법을 이용한 자기부상열차/유연궤도 동적 모델링 연구)

  • Han, Hyung-Suk;Lee, Jong-Min;Kim, Young-Joong;Kim, Dong-Seong;Kim, Sook-Hee;Lee, Jae-Ik
    • Proceedings of the KSR Conference
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    • 2006.11a
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    • pp.229-238
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    • 2006
  • In general, the Maglev vehicle is run over an elevated guideway consisting of steel or concrete structure. Since the running behavior of the vehicle is affected by the flexibility of the guideway, the consideration of the flexibility of guideway is needed for evaluating the dynamics of both the vehicle and guideway. A new method based on flexible multibody dynamics is proposed to model the Maglew vehicle. This method combines the levitation controller, vehicle, and guideway into a coupled model To verify the method, an urban transit is analyzed using the method and discussions are carried out.

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Dynamic Response of Coupled Maglev Train and Guideway System (자기부상열차-가이드웨이 통합 시스템의 동적 특성)

  • Kong, Eun-Ho;Kang, Bu-Byoung;Na, Sung-Soo
    • Transactions of the Korean Society for Noise and Vibration Engineering
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    • v.21 no.2
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    • pp.137-145
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    • 2011
  • This study is proposed to develop a numerical interaction model of the magnetically levitated(maglev) train and guideway. For this purpose, equation of motion for 6-DOF vehicle model, EMS, guideway and guideway irregularity are derived as the state-space equation. In order to solve the state space equations, the present work was performed via matlab simulation using Runge-Kutta method. Through the simulation, the effect of dynamic response of maglev system to different vehicle speeds, guideway rigidity(EI) and masses is investigated.

Analysis of Dynamic Interaction Between Maglev Vehicle and Guideway (자기부상열차/가이드웨이 동적상호작용 해석)

  • Kim, Ki-Jung;Han, Hyung-Suk;Yang, Seok-Jo
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.37 no.12
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    • pp.1559-1565
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    • 2013
  • This study aims to investigate the dynamic interaction characteristics between Maglev vehicles and an elevated guideway. A more detailed model for the dynamic interaction of the vehicle/guideway is proposed. The proposed model incorporates a 3D full vehicle model based on prototyping, flexible guideway by a modal superposition method, and levitation electromagnets including the feedback controller into an integrated model. The proposed model was applied to an urban transit Maglev developed for a commercial application to analyze the dynamic response of the vehicle and guideway, and the effect of the surface roughness of the rail, mid-span guideway deflections, and air gap variations are then investigated from the numerical simulation.

Influence of track irregularities in high-speed Maglev transportation systems

  • Huang, Jing Yu;Wu, Zhe Wei;Shi, Jin;Gao, Yang;Wang, Dong-Zhou
    • Smart Structures and Systems
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    • v.21 no.5
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    • pp.571-582
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    • 2018
  • Track irregularities of high-speed Maglev lines have significant influence on ride comfort. Their adjustment is of key importance in the daily maintenance of these lines. In this study, an adjustment method is proposed and track irregularities analysis is performed. This study considers two modules: an inspection module and a vehicle-guideway coupling vibration analysis module. In the inspection module, an inertial reference method is employed for field-measurements of the Shanghai high-speed Maglev demonstration line. Then, a partial filtering, integration method, resampling method, and designed elliptic filter are employed to analyze the detection data, which reveals the required track irregularities. In the analysis module, a vehicle-guideway interaction model and an electromagnetic interaction model were developed. The influence of the measured line irregularities is considered for the calculations of the electromagnetic force. Numerical integration method was employed for the calculations. Based on the actual field detection results and analysis using the numerical model, a threshold analysis method is developed. Several irregularities modalities with different girder end's deviations were considered in the simulations. The inspection results indicated that long-wavelength irregularities with larger girder end's deviations were the dominant irregularities. In addition, the threshold analysis of the girder end's deviation shows that irregularities that have a deviation amplitude larger than 6 mm and certain modalities (e.g., M- and N-shape) are unfavorable. These types of irregularities should be adjusted during the daily maintenance.