Abstract：Based on the multi-body dynamic theory, a vehicle-line system dynamics model of the suspended monorail was set up.Then the vibration rule at the turning points of the line curvature in planar and vertical sections were further studied by adopting the dynamic model.The results show that the lateral acceleration of car body, the vertical force of running wheel and the rate of wheel load reduction are not sensitive to the change of the length of intermediate straight line and circular curve, so the vibration overlap is not considered for the minimum length of intermediate straight line and circular curve under difficult conditions.The vertical acceleration of car body is sensitive to the algebraic difference between adjacent gradients of adjacent grade sections and the length of intermediate grade sections in vertical section.The vibration overlap enhancement or weakening effect depends on the consistency of the vibration direction that the ending point of previous vertical curve or intermediate grade section and the starting point of intermediate grade section or latter vertical curve, if the direction is the same, the overlap is enhanced and vice versa.And the influence of vibration overlap is negligible when the length of vertical curve and intermediate grade section increase to a certain value.In addition, the minimum length of intermediate grade section can be determined according to the maximum of vertical acceleration at the starting point of intermediate grade section by 95% or above.
寇峻瑜1,2，余浩伟1,2，李忠继1，谢毅1. 悬挂式单轨线路关键点处的振动特性研究[J]. 振动与冲击, 2021, 40(4): 221-226.
KOU Junyu1,2, YU Haowei1,2, LI Zhongji1, XIE Yi1. A study of vibration characteristic on line key points of suspended monorail. JOURNAL OF VIBRATION AND SHOCK, 2021, 40(4): 221-226.
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