轮轨界面增黏与减摩调控机制及关键技术研究数据集

随着铁路运输的快速发展，由于其复杂的服役特性，轮轨系统会面临着许多问题。一方面，轮轨界面“第三体层”的存在可能引发低黏着问题；另一方面，较大的轴重、运行速度和小半径曲线引起严重的磨损、噪声等问题。主要的解决措施是对轮轨界面进行黏着调控，本研究主要集中在轮轨界面低黏着增黏调控和轮轨界面减摩调控两个方面。因此，为优化轮轨撒砂增黏应用，有必要系统地开展轮轨界面硬质颗粒增黏与损伤机制研究。项目通过滚动接触模拟试验研究了低黏着工况下硬质颗粒增黏过程中颗粒施加量、颗粒粒径和不同硬质颗粒三种影响因素对增黏效果和轮轨损伤的影响规律；分析了颗粒破碎过程和破碎微粒磨粒磨损过程在轮轨撒砂增黏中的影响与作用机制。轮轨界面减摩调控指针对轮轨接触界面间切向力过大和小半径曲线处轮轨磨损、滚动接触疲劳损伤和摩擦噪声等问题，铁路上采用向轮轨界面（轨顶和轨侧）施加减摩调控产品的方法降低黏着水平。项目通过滚动接触模拟试验研究对比了接触应力、蠕滑率和施加量对摩擦调节剂产品减摩效果的影响规率和影响程度, 利用仿真和试验结合的方法研究了不同量摩擦调节剂对轮轨摩擦系数的影响及作用机制，最终揭示了不同接触应力下施加摩擦调节剂对轮轨损伤的影响机制。

With the rapid development of railway transportation, the wheel-rail system faces numerous issues due to its complex service characteristics. On one hand, the existence of the 'third-body layer' at the wheel-rail interface may trigger low-adhesion problems; on the other hand, large axle loads, operating speeds and small-radius curves cause severe wear, noise and other issues. The main solution is to perform adhesion regulation on the wheel-rail interface, and this study focuses on two aspects: low-adhesion viscosity-increasing regulation and friction-reduction regulation at the wheel-rail interface. Therefore, in order to optimize the application of sanding for viscosity increase on wheel-rail, it is necessary to systematically conduct research on the viscosity-increasing mechanism and damage caused by hard particles at the wheel-rail interface. The project investigated the influence rules of three influencing factors, namely particle application amount, particle size and different types of hard particles, on the viscosity-increasing effect and wheel-rail damage during the hard particle viscosity-increasing process under low-adhesion conditions through rolling contact simulation tests; it also analyzed the influence and mechanism of particle breakage process and broken particle abrasive wear process in the sanding viscosity-increasing process of wheel-rail. Friction-reduction regulation at the wheel-rail interface refers to the method of applying friction-modifying products to the wheel-rail interface (rail top and rail side) to reduce the adhesion level, aiming at problems such as excessive tangential force at the wheel-rail contact interface, wheel-rail wear, rolling contact fatigue damage and friction noise at small-radius curves. The project compared the influence rules and degrees of contact stress, creep rate and application amount on the friction-reduction effect of friction modifier products through rolling contact simulation tests; it used a combination of simulation and experiment methods to study the influence and mechanism of different dosages of friction modifiers on the wheel-rail friction coefficient, and finally revealed the damage mechanism of wheel-rail caused by applying friction modifiers under different contact stresses.

搜集汇总

背景与挑战

背景概述

该数据集专注于轮轨界面的增黏与减摩调控机制研究，针对铁路运输中的低黏着和磨损问题，通过滚动接触模拟试验分析撒砂增黏和摩擦调节剂减摩的关键影响因素及作用机制。数据集来自国家重点研发计划项目，包含实验数据，旨在优化轮轨界面摩擦性能调控技术，数据量较小但专业性强。