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假设制动盘内、外盘面具有相同的2阶正弦函数特征的初始端面跳动,针对内外侧壁厚不等的通风盘式制动器,利用Msc-marc软件建立了瞬态热-机耦合动力学仿真模型.以制动盘盘面温度场、法向应力、翘曲及厚度变化的分布特性为评价指标,在紧急制动工况下,分析了初始端面跳动对制动器热-机耦合特性的影响.研究发现,初始端面跳动的方向和大小对制动器热-机耦合特性具有显著影响.
Assuming that the inner and outer disks have the same initial surface runout with the second order sine function, the transient thermo-mechanical coupling dynamics simulation is established by Msc-marc for ventilated disk brakes with different inner and outer wall thicknesses Model.According to the distribution characteristics of the temperature field, the normal stress, the warpage and the thickness of the brake disc surface, the influence of the initial end surface runout on the thermo-mechanical coupling characteristics of the brake is analyzed under the condition of emergency braking. It is found that the direction and magnitude of the initial face runout have a significant effect on the thermo-mechanical coupling characteristics of the brakes.