An investigation into the mechanism of high-order polygonal wear of metro train wheels and its mitigation measures
An investigation into the mechanism of high-order polygonal wear of metro train wheels and its mitigation measures
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DOI：
10.1080/00423114.2020.1770810
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发表时间：
2020-05
影响因子：
3.6
通讯作者：
G. Tao;C. Xie;Heng-yu Wang;Xiaoxuan Yang;Changquan Ding;Z. Wen
中科院分区：
文献类型：
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作者：
G. Tao;C. Xie;Heng-yu Wang;Xiaoxuan Yang;Changquan Ding;Z. Wen
中国某线运营的地铁特快列车上发现高次多边形磨轮，导致一次悬挂钢卷弹簧疲劳失效。通过一系列试验和理论分析，找出了车轮高次多边形磨损的机理。车轮不圆度(OOR)测量结果表明，车轮表现为12-14次谐波的多边形磨损，这与文献报道的其他地铁列车车轮有很大不同。研究结果表明，轮对一次弯曲振动是导致车轮高次多边形磨损的根本原因。急弯轨道上1/3倍频程波长为200 mm的钢轨波纹是轮对一阶弯曲振动的主要激振源。详细分析了车轮高次多边形磨损的形成过程和主要影响因素。针对车轮高次多边形磨损的形成，提出了三项措施。
High-order polygonal wear wheels have been detected on metro express train operating on one metro line in China, which cause fatigue failures of steel coil springs in the primary suspension. A series of tests and theory analysis were conducted to figure out the mechanism of wheel high-order polygonal wear. The wheel out-of-roundness (OOR) measurement results show that the wheels exhibit polygonal wear with 12–14 harmonics, which are very different from other metro train wheels reported in the literature. The investigation results indicate that the first bending vibration of the wheelset is the root cause of wheel high-order polygonal wear. Rail corrugation with a wavelength of 200 mm in the 1/3-octave band on sharply curved tracks is the main excitation source of the first bending vibration of the wheelset. The formation process and key influencing factors of wheel high-order polygonal wear are analysed in detail. Three measures are suggested to mitigate the formation of wheel high-order polygonal wear.