抗侧滚扭杆对地铁车辆动力学性能影响的研究

Study of the impact on dynamics performonce of metro cars by anti-rolling torsion bar

国内外大部分高速客车转向架和地铁车辆转向架均采用了抗侧滚扭杆装置,以有效抑制车体侧滚角,降低车辆的柔度系数。但是,抗侧滚扭杆对其他动力学指标的影响易被忽视。通过建立某地铁车辆的动力学模型,仿真计算分析了车辆以80 km/h运行时,抗侧滚扭杆对车辆运行平稳性及车辆通过曲线时对柔度系数、倾覆系数、脱轨系数的影响。结果表明,抗侧滚扭杆装置虽然对降低车辆柔度系数有显著作用,但对车辆运行平稳性和车辆通过曲线时的倾覆系数、脱轨系数都有不利影响。因此,对于地铁车辆和中低速城轨车辆,应综合考虑二系悬挂的特性后再决定是否采用抗侧滚扭杆装置。

The most domestic and foreign high-speed passener cars bogie and metro cars bogie use anti-rolling torsion device in order to inhibite the bady-side rolling angle effectively,lowering the car's flexibility coefficients,but the impact of anti-roling torsion bar on another dynamics have been ignored.A metro car's dynamics model was set for simulating and analizing the effect of anti-rolling torsion bar on train riding stability,flexibitity coefficient,capsizal coefficient and derailment coefficient when the train running on the curve at speed of 80km/h.The results show that the anti-rolling torsion bar has a significant effect on lowering car's flexibility coefficient,but has a negative impact on riding index and capsizal coefficient and derailment coeficient when the train running on currve.Therefore,for metro cars and low and medium speed urban rail vehicles,the charateristics of the secondary suspension should be evaluated comprehensively in order to decide whether to use the anti-rolling torsion bar.