制动器热分析有限差分仿真模型的研究  

A Study on the Finite Difference Simulation Model for Brake Thermal Analysis

作　　者：陈友飞[1] 李亮[1] 杨财 宋健[1] 

机构地区：[1]清华大学,汽车安全与节能国家重点实验室,北京100084 [2]长安汽车工程研究院,重庆401120

出　　处：《汽车工程》2012年第3期236-240,共5页Automotive Engineering

基　　金：国家自然科学基金项目(50905092)资助

摘　　要：基于后向差分法建立制动盘有限差分温度场计算模型。对带散热筋的空心盘采用三维循环对称简易模型,通过仿真15次循环制动工况,获得瞬态温度场。另建相应的有限元模型进行有限元仿真,并将结果与有限差分法进行对比验证,结果表明,有限差分法具有有限元法相同的精度;且因采用参数化建模,故比有限元法的计算效率更高,更适合于结构参数的优化。A finite difference model for brake-disk thermal analysis is established based on backward difference method,in which simplified 3D cyclically symmetric model is used for hollow brake-disk with heat dissipation ribs.The transient temperature field in 15-cycle braking condition is obtained by simulation.Meanwhile the corresponding FE model is built and a finite element analysis（FEA） is conducted with the results compared with that of finite difference analysis（FDA） for verification.The results show that FDA has the same accuracy as FEA and,due to parametric modeling,has a higher computing efficiency than FEA,thus more suitable for structural parameter optimization.

关 键 词：制动器 热分析 有限差分 有限元 仿真 

分 类 号：U463.5[机械工程—车辆工程]