Dynamic Performance Influences on HOPF Bifurcation Characteristics for Vehicles
Dynamic Performance Influences on HOPF Bifurcation Characteristics for Vehicles
复制标题
DOI：
10.21307/ijssis-2017-830
复制
发表时间：
2015-01
影响因子：
1.2
通讯作者：
Haiyan Zhu;P. Wu;J. Zeng;Guoyao Mai
中科院分区：
文献类型：
--
作者：
Haiyan Zhu;P. Wu;J. Zeng;Guoyao Mai
摘要本文比较了高速列车常用的四种踏面轮廓特征对性能的影响。利用数学矩阵模型分析了影响VESTALE 1和VESTALE 2动力学性能的Hopf分岔特性。采用SIMPACK软件建立了与国产60轨匹配的4种踏面的高速列车VESTULE 1和VESTULE 2的动力学模型。这些模型的动力性能指标进行了研究，在运营过程中的直线轨道条件下，施加高干扰的德国轨道不平顺谱的动力性能归一化指标处理的前提下。研究结果表明：不同轮轨匹配条件下，车辆1号均表现出亚临界分岔特征。VESTULE 2动态性能指标值不随转速的增加而增加，但磨损指标随转速的增加而逐渐增加。不同结构参数的车辆，轮轨匹配对分岔稳定性、舒适性和轮轨磨耗有很大影响。该方法对高速列车轮轨匹配及车辆系统稳定性和安全性的结构参数具有重要的参考价值。
Abstract This study compares the performance influences for four kinds of tread contour features commonly used in High-Speed trains. The Hopf bifurcation characteristic influencing the dynamic performance for VEHICLE 1 and VEHICLE 2 were analyzed using mathematical matrices models. SIMPACK software was used to create two dynamic models for VEHICLE 1 and VEHICLE 2 for high speed trains equipped with four kinds of treads matched with Chinese 60 rail. Dynamic performance indices for these models were studied during operation in straight track conditions with imposed high interference German track irregularity spectra with the premise of dynamic performance normalized indices processing. The study shows that: VEHICLE 1 exhibits a subcritical bifurcation characteristic under different wheel-rail matching conditions. VEHICLE 2 dynamic performance index values do not increase as speed increases, but wear index gradually increased with increased speed. Vehicles with different structural parameters, wheel-rail matching greatly influences bifurcation stability, comfort and wheel-rail wear. This method indicates an important reference value for wheel-rail matching in high-speed trains and structural parameters of stability and safety for these vehicle systems.