铁道标准设计2025，Vol.69Issue(5)：202-208,221,8.DOI:10.13238/j.issn.1004-2954.202310090005
构架式中低速磁浮车辆空气弹簧故障动力学分析
Dynamic Analysis of Air Spring Failure in Frame-Type Low-to-Medium-Speed Maglev Vehicles
摘要
Abstract
Air springs,as the main components of the secondary suspension in low-to-medium-speed maglev vehicles,play an important role in vibration reduction and buffering.When an air spring experiences air loss failure,the contact stiffness between the vehicle and the suspension frame increases,causing a sharp deterioration in the vehicle's suspension stability and ride stability.Using frame-type low-to-medium-speed maglev vehicles as the research object,a dynamic response analysis was conducted under air spring failure conditions to assess its structural stability.The multi-body dynamics software SIMP ACK was used to establish a vehicle dynamics model that considered suspension control and single air spring failure.The dynamic responses of the maglev vehicles were compared under both normal and failure conditions while passing straight and curved tracks,and the feasibility of speed reduction after air spring failure was analyzed.The results showed that when the maglev vehicle operated at a speed of 160 km/h on a straight track with air loss failure,the maximum fluctuation of the suspension gap was 6.07 mm,the maximum vertical displacement of the air spring was 21.16 mm,and the maximum side roll angle of the suspension module at the failure point was 0.54°.These conditions posed risks of oscillatory instability and electromagnet suction failure at the ends.When the vehicle operated at a speed of 80 km/h on a curved track with a radius of 550 m,the dynamic responses at different failure locations varied significantly.The maximum suspension gap fluctuations at the straight section,transition curve,and circular curve were 5.07 mm,5.42 mm,and 4.33 mm,respectively.After the vehicle experienced a single air spring failure when operating at 160 km/h on a straight track and at 80 km/h on a curved track with a radius of 550 m,reducing the speed to 60 km/h and 30 km/h resulted in a decrease in maximum suspension gap fluctuations to 2.11 mm and 3.92 mm,respectively,and a reduction in maximum vertical vibration accelerations to 0.47 m/s2 and 0.35 m/s2.All values remained within the limits specified by the standard.Therefore,the advantages of the new frame-type suspension system make it feasible for the maglev vehicle to operate at low speed to the nearest station under air spring failure conditions.关键词
中低速磁浮车辆/悬浮架/空气弹簧/失气故障/动力学分析/降速运行Key words
low-to-medium-speed maglev vehicle/suspension frame/air spring/air loss failure/dynamic analysis/speed reduction operation分类
交通工程引用本文复制引用
颜佳海,张敏,马卫华,王爱彬,邓斌..构架式中低速磁浮车辆空气弹簧故障动力学分析[J].铁道标准设计,2025,69(5):202-208,221,8.基金项目
国家自然科学基金项目(52102442) （52102442）
中央高校基本科研业务费专项资金资助项目(2682022CX060,2682023GF002) （2682022CX060,2682023GF002）
