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采用自行设计的磨损试验机采集轮胎-路面摩擦副产生的轮胎磨损颗粒物,通过光学显微镜和扫描电子显微镜(SEM)分析和讨论了不同负载、速度和胎压工况影响下磨损颗粒物的表面形貌、粒度及磨损胎面形貌,建立了磨损颗粒物与胎面磨损形态的关系.结果表明:轮胎磨损颗粒物的粒度和数量类似正态分布,粒度主要集中在100~300μm.轮胎磨损颗粒物的主要产生机理是胎面疲劳剥落,形式主要为片状剥落和卷曲磨损共存,卷曲磨损会导致更多的磨损颗粒物脱离.载荷可使两种磨损形式的主导地位发生转变.接触界面应力提高会使团絮状胎面磨损颗粒物增多,速度增大会明显减小磨损颗粒物粒度.对小于10μm颗粒物来说,工况对其数量影响的主次顺序依次为速度、胎压和载荷.本研究可以为减少因轮胎磨损而导致的磨屑次生危害提供可供借鉴的理论指导.
Tire wear particles produced by tire-road friction pairs were collected by a self-designed wear tester. The surface morphology of the wear particles under different load, speed and tire pressure conditions was analyzed and analyzed by optical microscope and scanning electron microscope (SEM) , Particle size and wear tread morphology, the relationship between wear particles and tread wear morphology was established.The results show that the size and the number of wear particles are similar to the normal distribution, the particle size is mainly concentrated in the range of 100 ~ 300μm.The main production of tire wear particles Tread fatigue spalling mechanism, the main form of flaking and coexistence of curl wear, curl wear will lead to more wear particles detachment. Load can make the two forms of wear and tear change the dominant position. Tread wear particles increased, the speed increases will significantly reduce the particle size of wear particles.For particles less than 10μm, the order of the number of working conditions on the order of speed, tire pressure and load.This study can reduce the tire Wear and tear caused by the secondary hazards of abrasion provide a theoretical guide for reference.