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目的:高速列车车轮磨耗过程非常复杂,涉及因素较多。本文旨在发展及验证一个高速列车车轮磨耗预测模型,对高速铁路轮轨型面设计、车辆悬挂参数设计、车轮镟修计划的制订及降低运营维护成本等具有非常重要的意义。创新点:1.建立一个包含车辆轨道动力学仿真、轮轨局部接触求解、车轮磨耗计算和型面平滑与更新策略的高速列车车轮磨耗预测模型;2.利用跟踪测试的高速列车车轮磨耗结果对预测模型进行验证;3.修正USFD磨耗函数,使得预测结果与实测结果更为吻合。方法:1.在SIMPACK多体动力学软件中建立CRH3型动车组拖车的动力学模型,对武广高铁的实际线路进行统计,采用统计的虚拟线路代替实际线路;2.利用Fa Strip进行轮轨局部接触求解;3.采用修正后的USFD磨耗函数进行车轮磨耗计算;4.利用现场实测数据验证模型的可靠性。结论:轮轨界面状态对车轮磨耗具有较大的影响;直接采用已有的磨耗模型进行车轮磨耗预测可能会导致一定的偏差,需要对其进行适当的修正才能获得较好的预测结果。
Purpose: The process of wheel wear of high-speed train is very complicated, involving many factors. The purpose of this paper is to develop and validate a high-speed train wheel wear prediction model, which is of great significance to the design of the wheel and rail surface of high-speed railway, the design of vehicle suspension parameters, the formulation of wheel repair plans and the reduction of operation and maintenance costs. Innovative points: 1.To establish a high-speed train wheel wear prediction model including vehicle track dynamics simulation, wheel and rail local contact solution, wheel wear calculation and surface smoothing and updating strategy; 2. Using wheel tracking results of high speed train wheel wear The prediction model is validated.3. The USFD abrasion function is modified so that the prediction result is more consistent with the measured result. The dynamic model of CRH3 EMU trailer is established in SIMPACK multi-body dynamics software, the actual lines of Wuhan-Guangzhou high-speed rail are counted, the virtual lines are used to replace the actual ones.2. Local contact solution; 3 using the revised USFD wear function wheel wear calculation; 4 using field measurements to verify the reliability of the model. CONCLUSION: Wheel-rail interface state has a great influence on wheel wear. Using the existing wear model directly for wheel wear prediction may lead to certain deviations, which need to be corrected properly to obtain better prediction results.