关键词: 车辆工程, 跨座式单轨车辆, 走行轮失效, 动力学性能, ADAMS

Abstract: According to the structural characteristics of straddle-type monorail vehicle, the monorail vehicle dynamics model of walking wheel failure was established by the multi-body dynamics software (ADAMS). On this basis, the influence of the walking wheel failure on the dynamic performance of the monorail vehicle under different working conditions was analyzed. The results show that: the safe running speed limit of the curve R100 m is 35km/h and 30km/h respectively when the walking wheels fail in the idle (AW0)and over-loading (AW3)state; the trend of walking wheel failure on the same side of the curve is basically the same for the safety of vehicle operation; the effect of the failure of the inner walking wheel and the failure of the outer walking wheel on the safety performance of the vehicle has great difference; when the speed is large, the failure of the outer walking wheel of the bend has a greater impact on the safety performance of the vehicle. Compared with normal operation, when the walking wheels fail, the lateral stability increases by 0.2~1.1, the vertical stability increases by 0.2~1.2, and the vertical stability of the part has exceeded 3. The walking wheel failure has great influence on the running stability of the straddle monorail vehicle. When the walking wheel failure occurs, the running stability of the vehicle becomes worse and the vehicle should slow down and reach the neighboring site to evacuate passengers as soon as possible.

Key words: vehicle engineering, straddle-type monorail vehicle, walking wheel failure, dynamic performance, ADAMS