非光滑表面制动盘摩擦磨损性能有限元分析

基于摩擦试验要求的外形尺寸和非光滑结构的设计尺寸，建立了非光滑表面刹车盘/片模型，通过分析制动过程中接触压力与摩擦热之间的交互作用关系，建立了制动盘/片的热-应力耦合分析模型，并应用Ansys/LS-DYNA对非光滑表面刹车盘/片系统的摩擦磨损性能进行了有限元分析.分析结果表明:当盘孔间距为1mm，盘孔直径为08mm时，非光滑刹车盘/片试样呈现最小的vonMises应力，为耐磨性最佳的非光滑形态.通过摩擦磨损试验得到与模拟相应试样的磨损量及动摩擦系数，比较后发现二者均体现出与模拟结果中vonMises应力相一致的变化规律，验证了模拟分析结果的可信性.

Finite Element Analysis on Friction and Wear Properties of Non smooth Surface Brake Disc

Based on friction test required dimension and non smooth surface design size， the brake disc/pad models of non smooth surface were established. The interaction between contact pressure and friction heat during the braking process was analyzed to establish the thermal stress coupling analysis model， and analyzed the friction and wear properties of non smooth surface brake disc/pad system by Ansys/LS DYNA. The results showed when the pits spacing is 1mm and the diameter is 08mm， non smooth surface brake/pad system has smallest von Mises stress. Through the friction and wear test， the wear loss and kinetic coefficient of actual samples were tested and the result showed the same characteristics with the simulation results， so the credibility of simulation result was verified.