摘要
凭借热稳定性好、制动力平稳的特点,盘式制动器已广泛运用于各式车辆。由于盘式制动器制动时为摩擦制动,其热-结构耦合特性对制动器的结构、寿命有着重要影响。使用CATIA软件建立简化的三维结构模型,并通过ABAQUS模拟制动器的制动过程,模拟了制动盘在紧急制动过程中热-结构耦合特性的情况,确定了在制动过程中制动盘最容易发生热疲劳失效区域,并通过对制动盘表面径向及同一半径处的周向节点温度及应力的变化情况对比,深入分析了制动盘的温度及应力变化特性。利用Manson-coffin公式对制动盘在紧急制动工况下热疲劳寿命进行预测。
Because of good thermal stability and smooth braking force, disc brake has been widely used in many kinds of cars. It is friction brake while braking and the thermal-structural coupling characteristicshave great impacts lifeand structure of the brake.Establish a simplified 3D model with CATIA, and a simulation analysis on thermal and forceis carried on with ABAQUS under emergency braking condition to study the thermal-structure coupling characteristics. Contrast the radial nodes and circumferential nodesof the brake disc surface, analyzingthe temperature and stress changes characteristic of the brake disc deeply.The thermal fatigue life of brake in the emergency braking condition was predicted with Mason-coffin formula.
出处
《机械设计与制造》
北大核心
2017年第2期203-206,共4页
Machinery Design & Manufacture
