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为了研究不同分布形式轮径差对径向转向架曲线通过性能的影响,以某C0—C0轴式电力机车通过曲线为例,在SIMPACK中建立车辆-轨道系统动力学模型,从三轴转向架轮径差的19种典型分布形式中选取最恶劣的7种形式进行仿真。仿真结果表明,不同形式轮径差对径向转向架动力学性能的影响程度不同。反相轮径差(前轮对小轮径车轮在曲线外侧,中间轮对轮径差与前轮对轮径差同相)对导向力、脱轨系数、摇头角和磨耗功的影响最大;三轮对同向轮径差(小轮径车轮在曲线外侧)对轮轴横向力、外轨垂向力和轮重减载率的影响最大。传统转向架和径向转向架的曲线通过性能均随着轮径差的增大而恶化,并且在仍然改善了曲线通过性能的前提下,径向转向架对轮径差更敏感。
In order to study the influence of different wheel diameters on radial bogie curve passing performance, taking a C0-C0 electric locomotive passing curve as an example, a vehicle-rail system dynamics model is established in SIMPACK, Among the 19 typical distributions of wheel diameter differences, the worst seven forms were selected for simulation. The simulation results show that different degrees of wheel diameter difference affect the dynamic performance of radial bogies to different degrees. Inverse wheel diameter difference (the front wheel on the small wheel diameter outside the curve, the wheel diameter difference between the front wheel and the wheel diameter difference in the same phase) on the guidance force, derailment coefficient, the impact of shaking and work wear the greatest impact; three The influence of the wheel diameter difference (the wheel with small wheel diameter on the outside of the curve) on the wheel axle lateral force, the external rail vertical force and the wheel load reduction rate is the greatest. The curve passing performance of the conventional bogie and the radial bogie is deteriorated with the increase of the wheel diameter difference, and the radial bogie is more sensitive to the wheel diameter difference while still improving the curve passing performance.