Experimental investigation on vibration characteristics of the medium–low-speed maglev vehicle–turnout coupled system

Li, Miao; Gao, Dinggang; Li, Tie; Luo, Shan; Ma, Wei; Chen, Xiaohao

doi:10.1007/s40534-021-00266-7

Cited by 4 publications

(2 citation statements)

References 31 publications

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“…Overall, studies have generally used model-based methods, such as simple analytical or finite element methods, to conduct numerical investigations of the dynamic responses under various conditions, with data from field experiments being used to verify the established models [32]. However, few studies have been conducted on the maglev trainturnout dynamic interactions, as most of the existing research has focused on concrete bridges typically used on main lines [33][34][35][36]. Moreover, field tests conducted on a real operational maglev line are inadequate for turnout.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Performance of Low- and Medium-Speed Maglev Train Running on the Turnout

Wang¹,

Zhu²,

Ni³

et al. 2023

MITS

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This study aimed to analyze dynamic performance of the low-and medium-speed maglev train on the turnout, by conducting a series of field tests on the Fenghuang maglev sightseeing express line. This study systematically analyzed and evaluated dynamic responses of vehicle body, suspension bogie, short rail joint, motor-driven long-span girder (LSG) and continuous beam of the turnout at different speeds and loads in time and frequency domains. Test results obtained in this study indicated that: 1) speed and load of the maglev train affected acceleration amplitude of the train and turnout; 2) vertical sperling indexes of the test train were less than 2.5, indicating that the train had good ride quality; and 3) resonance phenomenon of track occurred at 40 km/h. The findings of this study may serve as references for model validation and optimized design of low-and mediumspeed maglev train.

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Section: Introductionmentioning

confidence: 99%

Dynamic Performance of Low- and Medium-Speed Maglev Train Running on the Turnout

Wang¹,

Zhu²,

Ni³

et al. 2023

MITS

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show abstract

“…However, as one of the critical challenges for HTS Maglev, a widely recognized turnout still needs to be solved. Mechanical equipment is commonly used in railway and electromagnetic levitation vehicles [11,12] to move the track. While moving traditionally is challenging and dangerous due to the magnetic force between the permanent magnet guideways (PMGs) in HTS Maglev.…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic force behavior of superconducting bulks passing electromagnetic turnout

Peng,

Wang,

Zhou

et al. 2023

Supercond. Sci. Technol.

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High temperature superconducting (HTS) Maglev is a promising technology owing to its excellent electromagnetic properties of non-control stability and frictionless. As a critical component of HTS Maglev, the turnout poses challenges due to the use of the permanent magnet guideways (PMGs) that are difficult to switch mechanically. With simple structure and rapid responsiveness, electromagnetic turnout has become an interesting research field of HTS Maglev. The electromagnetic turnout is designed to control the electromagnetic force of the HTS bulks by adjusting the magnetic field using an electromagnetic-permanent magnetic structure. However, the magnetic field generated by the combination of the electromagnet and the PMs inevitably differs from the magnetic field above the PMGs, affecting the electromagnetic force behavior of the HTS bulks. To guarantee optimal performance of the electromagnetic turnout, the variation process of the magnetic field peak (MFP) above the turnout is analyzed. Furthermore, a three-dimensional superconducting model based on the H-formulation and motion equation is built to obtain the electromagnetic force of the HTS bulks passing the turnout. It’s concluded that higher cooling heights (CHs) in the preparation and higher working heights (WHs) in the turnout area are recommended to reduce the magnetic resistance and avoid the destabilizing effect. In addition, the smaller bulks experience greater resistance, and the longer bulks are prone to nodding, while the wider bulks are prone to shaking above the turnout. Properly matching HTS bulks with operating conditions improves electromagnetic force behavior and benefits HTS Maglev turnout passability.

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Analysis on abnormal low-frequency vertical vibration of medium–low-speed maglev vehicle

Chen

Luo

et al. 2023

Mechanical Systems and Signal Processing

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Experimental investigation on vibration characteristics of the medium–low-speed maglev vehicle–turnout coupled system

Cited by 4 publications

References 31 publications

Dynamic Performance of Low- and Medium-Speed Maglev Train Running on the Turnout

Dynamic Performance of Low- and Medium-Speed Maglev Train Running on the Turnout

Electromagnetic force behavior of superconducting bulks passing electromagnetic turnout

Analysis on abnormal low-frequency vertical vibration of medium–low-speed maglev vehicle

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