【摘要】 为了研究地铁弹性车轮车辆通过钢轨波磨不平顺处的动力学行为，建立了弹性车轮车辆和轨道模型。基于多刚体动力学理论建立车辆系统模型，在传统刚性车轮车辆-轨道耦合模型的基础上，将弹性车轮简化为轮辋与轮芯双质量块，轮箍与轮芯的橡胶层用弹簧-阻尼进行建模。推导了矩阵形式的车辆-轨道运动方程，分别调查了刚性车轮及弹性车轮经过钢轨波磨处动力学行为。结果表明：短波长波磨比长波长波磨对车辆运行的平稳性影响更大，在特定条件下，轮轨力比长波长波磨增大了约75.8%;在钢轨波磨波长为0.04～0.05 m时轮轨力会有极大值；钢轨波磨波深与轮轨力呈自相关；弹性车轮相较普通刚性车轮有更好的动力学性能。更多还原

【Abstract】 In order to study the dynamic behavior of the metro vehicle with elastic wheels passing through the rail corrugation irregularities, the vehicle and track models with elastic wheels are established. The vehicle system model is established based on the multi rigid body dynamics theory. On the basis of the traditional rigid wheel vehicle track coupling model, the elastic wheel is simplified as a double mass block of rim and wheel core, and the rubber layer of wheel rim and wheel core is modeled with spring damping. The vehicle track motion equation in matrix form is derived, and the dynamic behavior of rigid wheel and elastic wheel passing through rail corrugation is investigated respectively. The results show that the short wavelength corrugation has more influence on the vehicle running stability than the long wavelength corrugation. Under specific conditions, the wheel rail force is increased by 75.8% compared with the long wavelength corrugation; When the rail corrugation wavelength is 0.04～0.05 m, the wheel rail force will have a maximum value; The depth of rail corrugation is autocorrelation with wheel/rail force; Elastic wheels have better dynamic performance than ordinary rigid wheels.更多还原