制动盘制动过程的热—机耦合仿真  

Thermo-mechanical Coupling Simulation of Braking Process of Brake Disc

作　　者：杨智勇[1] 韩建民[1] 李卫京[1] 陈跃[1] 王金华[1] 

机构地区：[1]北京交通大学机械与电子控制工程学院,北京100044

出　　处：《机械工程学报》2010年第2期88-92,共5页Journal of Mechanical Engineering

基　　金：北京交通大学科技基金资助项目(2008RC062)

摘　　要：在部分盘和整盘间接耦合模型的基础上,考虑制动盘的结构特点及在应力计算过程中施加的对称性约束,建立制动盘、闸片和盘毂之间的三体接触弹塑性热机耦合模型,使制动盘和闸片的相对运动得以实现。通过该模型的模拟结果和测试结果相比较的方法,证明该耦合模型的计算结果能够较为真实地反映制动过程中制动盘的温度场和应力应变场的分布情况,实现了模拟结果和测试结果相一致,体现温度场和位移场的相互作用,达到温度场和应力场的直接耦合的目的。采用弹塑性热机耦合方法分析制动盘在制动过程中热斑的形成。On the basis of the part-disc indirect coupling method, the full-disc indirect coupling model, the symmetry features of the structure of brake disc and symmetry constraints applied during the stress calculation are taken into account, the elastic-plastic thermo-mechanical coupling contact models including brake disc, pad and hub is established, so that the relative movement between the brake disc and pad is realized. The model can become the interaction and direct coupling simulation between temperature fields and stress fields. By the comparison of the simulation results and the experimental results, it can be concluded that the simulated distributions of the temperature and stress fields of brake disc is consistent with the actual distributions during braking. The formation of hot spots on the brake disc during broking is investigated by using the elastic-plastic thermo-mechanieal coupling method.

关 键 词：制动盘 弹塑性热—机耦合 热斑 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]