| 高速动车组轴箱转臂节点性能对轮轨耦合振动的影响 |
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| 引用本文： | 侯茂锐,胡晓依,郭涛,罗俊,樊令举.高速动车组轴箱转臂节点性能对轮轨耦合振动的影响[J].交通运输工程学报,2021,21(6):170-180. |
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| 作者姓名： | 侯茂锐 胡晓依 郭涛 罗俊 樊令举 |
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| 作者单位： | 1.中国铁道科学研究院集团有限公司 铁道科学技术研究发展中心，北京 1000812.中车唐山机车车辆有限公司，河北 唐山 0630353.株洲时代新材料科技股份有限公司，湖南 株洲 4120074.青岛博锐智远减振科技有限公司，山东 青岛 266111 |
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| 基金项目： | 国家自然科学基金项目U1734201中国铁路总公司科技研究开发计划课题2017G011-C中国铁道科学研究院集团有限公司科研项目2019YJ162 |
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| 摘 要： | 为分析钢轨波磨、车轮多边形等轮轨短波不平顺条件下轴箱转臂节点性能对轮轨耦合振动的影响，分别从仿真计算、现场试验和台架试验3个方面进行综合分析，通过建立车辆-轨道刚柔耦合系统动力学仿真模型，分析了钢轨波磨和车轮多边形对轮轨耦合振动的影响，并在武广高铁进行了钢轨波磨条件下新、旧轴箱转臂节点对轴箱振动响应的影响试验，在滚动试验台上进行了高阶车轮多边形条件下新、旧轴箱转臂节点对转向架振动响应的影响试验；对已服役运用120万公里的A、B型轴箱转臂节点进行了1 000万次疲劳耐久性试验，论证了服役轴箱转臂节点疲劳可靠性的安全裕量。研究结果表明:在钢轨波长为120 mm，车轮多边形为20阶，钢轨波磨和车轮多边形波深均为0.04 mm的条件下，当轴箱转臂节点径向刚度由40 MN·m-1增加到200 MN·m-1时，钢轨振动加速度、轴箱振动加速度和轮轨垂向力基本不变，在钢轨波磨和车轮多边形等短波激励下，轴箱转臂节点刚度变化不会对轮轨耦合振动产生明显影响；随着疲劳试验次数的增加，轴箱转臂节点径向和轴向刚度均逐渐下降，退役轴箱转臂节点在经历1 000万次疲劳耐久性试验后外观状态基本无改变，芯轴与橡胶粘接部分出现轻微开胶和裂纹，开胶和裂纹深度不大于5 mm，橡胶本体均无裂纹，各项性能满足《机车车辆用橡胶弹性元件通用技术条件》(TB/T 2843—2015)中的规定。
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| 关 键 词： | 高速动车组 轴箱转臂节点 钢轨波磨 车轮多边形 疲劳耐久性 |
| 收稿时间： | 2021-06-06 |
Effect of axle box rotary arm node performance on wheel-rail coupling vibration for high-speed EMUs |
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| HOU Mao-rui,HU Xiao-yi,GUO Tao,LUO Jun,FAN Ling-ju.Effect of axle box rotary arm node performance on wheel-rail coupling vibration for high-speed EMUs[J].Journal of Traffic and Transportation Engineering,2021,21(6):170-180. |
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| Authors: | HOU Mao-rui HU Xiao-yi GUO Tao LUO Jun FAN Ling-ju |
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| Affiliation: | 1.Railway Science and Technology Research and Development Center, China Academy of Railway Sciences Co., Ltd., Beijing 100081, China2.CRRC Tangshan Co., Ltd., Tangshan 063035, Hebei, China3.Zhuzhou Times New Material Technology Co., Ltd., Zhuzhou 412007, Hunan, China4.Qingdao Borui Zhiyuan Anti-Vibration Technology Co., Ltd., Qingdao 266111, Shandong, China |
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| Abstract: | To analyze the effect of axle box rotary arm node performance on the wheel-rail coupling vibration under wheel-rail short-wave irregularities such as rail corrugation and wheel polygon, the comprehensive research was conducted from three aspects, such as simulation calculation, field test, and bench test. A dynamics simulation model of a vehicle-track rigid-flexible coupling system was established to analyze the effects of rail corrugation and wheel polygon on the wheel-rail coupling vibration. The effects of new and old axle box rotary arm nodes on the axle box vibration responses under the rail corrugation and the bogie vibration responses under the high-order polygon were tested using a rolling test bench along the Wuhan-Guangzhou High-Speed Railway Line. 10 million fatigue durability tests were conducted on the type A and B axle box rotary arm nodes that have been in service for 1.2 million km, to demonstrate the fatigue reliability safety margins of the nodes. Research results show that the vibration accelerations of rails and axle box as well as the wheel-rail vertical force effectively remain unchanged with an increase in the radial stiffness of the axle box rotary arm node from 40 MN·m-1 to 200 MN·m-1, when the rail wavelength is 120 mm, the wheel polygon is of the 20th order, and the wave depths of rail corrugation and wheel polygon are both 0.04 mm. The change in the axle box rotary arm node stiffness will not significantly influence the wheel-rail coupling vibration responses under short-wave excitations such as rail corrugation and wheel polygon. With an increase in the number of fatigue test, the radial and axial stiffnesses of axle box rotary arm nodes decrease gradually. After 10 million fatigue durability tests, the appearances of the decommissioned axle box rotary arm nodes remain basically unchanged. Although the core shaft and rubber adhesive parts show slight tackle and cracking, the tackle and cracking depths are not more than 5 mm. The rubber body itself shows no cracks. In general, the performance still meets the General Technical Requirements for Rolling Stock Rubber to Metal Parts (TB/T 2843—2015). 3 tabs, 14 figs, 30 refs. |
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