悬挂参数对横风下山地城市地铁车辆曲线通过性的影响

Influence of Suspension Parameters on the Curve Passage Performance of Metro Vehicle under Crosswind in Mountain City

为了研究悬挂参数对横风下山地城市地铁车辆曲线通过性影响的问题,有针对性地建立了山地城市B型地铁车辆动力学模型,并进行了仿真计算,分析讨论了迎风角、加载横风、轨道不平顺、一系横向刚度与二系横向刚度及悬挂间挠度比等参数对横风下车辆曲线通过的影响。结果表明,横风载荷均在迎风角α为90°附近时出现了极大值;一系横向刚度对横风下车辆曲线通过性能的影响比二系横向刚度影响大;一系横向刚度、二系横向刚度和挠度比的增大使得横风下曲线通过更加困难;一系横向刚度kpy建议为9~11 MN/m,二系横向刚度ksy建议为0.2 MN/m。

To investigate the influence of suspension parameters on the curve passage performance of metro vehicle under crosswind in mountain city, the targeted type-B vehicle dynamics model was established in the mountain city. The influence of the windward angle, loading crosswind, track irregularity, primary & secondary suspension lateral stiffness and deflection ratio between suspensions on vehicle curve passage under crosswind was analyzed by simulating. The results showed that the maximum values of crosswind loads appeared near the windward angle α = 90°. The lateral stiffness of the primary suspension was more important than that of secondary suspension. The increase of lateral stiffness of the primary and secondary suspension, and deflection ratio made it more difficult to pass the curve under the crosswind. The recommended lateral stiffness of the primary suspension was kpy=9-11 MN/m, and the recommended lateral stiffness of the secondary suspension was ksy=0.2 MN/m.