列车制动盘散热特性分析及拓扑优化  

Heat Dissipation Characteristic Analysis and Topology Optimization Design of Train Brake Disc

作　　者：卢耀辉[1] 史潇博 唐波[1] 李腾宇 LU Yaohui;SHI Xiaobo;TANG Bo;LI Tengyu(School of Mechanical Engineering,Southwest Jiaotong University,Chengdu 610031,China)

机构地区：[1]西南交通大学机械工程学院,四川成都610031

出　　处：《大连交通大学学报》2024年第1期62-66,83,共6页Journal of Dalian Jiaotong University

基　　金：国家自然科学基金项目(51275428);四川省科技厅重点研发计划项目(22ZDYF3050)。

摘　　要：针对紧急制动工况下制动盘散热问题,采用计算流体力学分析方法对某型通风式制动盘进行了散热特性研究。对制动盘内部流道速度场和对流换热等进行评估,在此基础上,采用由N-S方程与达西定律耦合成的Brinkman方程拓扑优化,实现制动盘散热能力提升的优化目标。结果表明:优化后的模型在整个制动工况中散热量提高了13.46%。The heat dissipation capability of brake disc is an important performance index to evaluate its performance,and the structure of heat dissipation rib is the key factor to affect the heat dissipation characteristic of ventilated brake disc.In order to solve the heat dissipation problem of brake disc under emergency braking condition,the heat dissipation characteristics of a ventilated brake disc are studied by using computational fluid dynamics analysis method.The velocity field and convection heat transfer in the inner flow channel of the brake disc are evaluated.On this basis,Brinkman equation topology optimization coupled by N-S equation and Darcy's law is adopted to achieve the optimization goal of improving the heat dissipation capacity of the brake disc.The results show that the heat dissipation of the optimized model is increased by 13.46%in the whole braking condition.Therefore,it is of great significance to use topology optimization to design the cooling ribs of the brake disc.

关 键 词：高速列车 制动盘 散热性能 拓扑优化 仿真分析 

分 类 号：U270.35[机械工程—车辆工程]