Dynamic response analysis of a low-medium speed maglev vehicle-track coupled system on tight curve

WANG Xiangping1,LI Guofang1,MU Xianlong1,WANG Hongbing1,JIN Zhongyuan2,DING Wangcai1

Journal of Vibration and Shock ›› 2022, Vol. 41 ›› Issue (10) : 81-89.

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PDF(2751 KB)
Journal of Vibration and Shock ›› 2022, Vol. 41 ›› Issue (10) : 81-89.

Dynamic response analysis of a low-medium speed maglev vehicle-track coupled system on tight curve

  • WANG Xiangping1,LI Guofang1,MU Xianlong1,WANG Hongbing1,JIN Zhongyuan2,DING Wangcai1
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Abstract

The dynamic response of low-medium speed maglev vehicle-track on tight curve is of great significance to the safe operation of vehicles, but it is rarely involved in the current research. Using finite element and multi-body dynamics methods, the dynamic model of the elevated track with low-medium speed maglev vehicle and tight curve was established. The dynamic response of the vehicle-track system on the tight curve was analyzed by considering the dynamic magnetic track action in space and the interaction of key components of the track. The results show that The 2-D magnetic track relationship will be too large to estimate the magnetic track force in the curve segment; The body of maglev vehicle in the curve section is mainly low-frequency sloshing below 2Hz. The vibration of the elevated rail with continuous beam in curved section is mainly caused by the overall bending and torsional deformation of the track at 0-20Hz and the local bending and torsional deformation of F rail at 80-100Hz. The vertical vibration acceleration in the easing curve segment is greater than that in the circular curve segment, and the transverse vibration acceleration in the circular curve segment is greater than that in the easing curve segment. The vibration acceleration in the easing curve segment is more sensitive to the change of vehicle speed. The research results can provide a theoretical basis for the design of maglev elevated track in curve section and the safe operation of vehicles.

Key words

low-medium speed maglev transport / flexible track beam / dynamic magnet-track relationship / vehicle-guideway coupling vibration / dynamic curve negotiation

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WANG Xiangping1,LI Guofang1,MU Xianlong1,WANG Hongbing1,JIN Zhongyuan2,DING Wangcai1. Dynamic response analysis of a low-medium speed maglev vehicle-track coupled system on tight curve[J]. Journal of Vibration and Shock, 2022, 41(10): 81-89

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