Page 106 - 《摩擦学学报》2021年第1期

第 1 期 项载毓, 等: 高速列车制动闸片摩擦块形状对制动界面摩擦学行为的影响 103

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NT11 NT11 NT11 NT11
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NT11 NT11 NT11 NT11
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Fig. 14 Numerical analysis results of the temperature distribution of friction block surface
图 14 摩擦块表面热分布仿真结果
4 结论 界面摩擦磨损性能的影响机理并找出其中的关键因素.
a. 高速列车制动闸片摩擦块的形状对其表面磨 参 考 文 献
损特性具有重要影响，六边形摩擦块表面磨损较为轻 [ 1 ] Wang Qi, Yao Pingping, Zhou Haibin, et al. Wear map of cu-based
微，接触平台较为分散且尺寸较小，而五边形和圆形 powder metallurgy friction material using Cr as a friction
摩擦块磨损表面存在明显的犁沟和剥落现象，对应的 component[J]. Tribology, 2017, 37(3): 364–371 (in Chinese) [王奇,
姚萍屏, 周海滨, 等. 含Cr铜基粉末冶金摩擦材料的磨损图研究
接触平台尺寸较大且形成长条形联通区，六边形摩擦
[J]. 摩擦学学报, 2017, 37(3): 364–371].
块在与制动盘摩擦过程中具有比五边形和圆形摩擦
[ 2 ] Lazzari A, Tonazzi D, Massi F. Squeal propensity characterization
块更好的磨损特性.
of brake lining materials through friction noise measurements[J].
b. 摩擦块形状明显影响了制动界面接触行为，其 Mechanical Systems & Signal Processing, 2019, 128: 216–228.
中六边形摩擦块能使制动系统具有较好的界面接触 [ 3 ] Peng Tao, Yan Qingzhi, Zhang Xiaolu. Stability of metal matrix
行为，制动盘、摩擦块的温度及接触应力分布更为均 composite pads during high-speed braking[J]. Tribology Letters,
匀，以圆形摩擦块为对摩副的制动盘产生明显的热聚 2018, 66(2): 63–74. doi: 10.1007/s11249-018-1014-1.
[ 4 ] Meng Fanhui, Liu Yan, Wu Ying, et al. Research on finite element
集现象.
simulation of braking process of high speed train brake disc and
c. 制动过程中，具有较大接触面积且接触应力分
influence of surface scratch on stress field[J]. Journal of Mechanical
布均匀的摩擦块能有效改善制动盘和摩擦块的温度
Engineering, 2018, 54(12): 42–48 (in Chinese) [孟繁辉, 刘艳, 吴影,
聚集现象，呈现出较好的摩擦学行为. 因此，开展高速 等. 高速列车制动盘制动过程的有限元模拟及表面划伤对应力场
列车制动闸片摩擦块形状设计时应充分考虑如何保 的 影 响 研 究 [J]. 机 械 工 程 学 报 , 2018, 54(12): 42–48]. doi:
证制动过程中摩擦块与制动盘具有良好的界面接触 10.3901/JME.2018.12.042.
行为，并由此确保获得良好的制动性能. [ 5 ] Zhang Peng, Zhang Lin, Fu Kangxi, et al. Effects of different forms
本研究结果可为高速列车制动闸片摩擦块的设 of Fe powder additives on the simulated braking performance of Cu-
based friction materials for high-speed railway trains[J]. Wear, 2018:
计及优化提供必要的理论依据和应用指导. 但值得注
414–415.
意的是，摩擦块形状对高速列车制动界面摩擦磨损性
[ 6 ] Chen Jingjie, Zhang Lijun, Diao Kun, et al. Measurement and
能的影响涉及因素较多，仍需进一步开展相应的试验 characteristics analysis of frictional contact forces in a pin on disc
研究及数值模拟工作，以深入探究摩擦块形状对制动 system[J]. Tribology, 2013, 33(2): 105–111 (in Chinese) [陈晶杰,