间参数鼓式制动器简化模型的隔态温度场数值分析-北京邮电大学学报.PDF

2011 年 12 月 北京邮电大学学报 Dec.2011 第34 卷第6 期 loumal of Beijing University of Posts and Telecommunications Vo l. 34 No.6 文章编号: 1007-5321 (2011) 06 -D0 1O-05 间参数鼓式制动器简化模型的隔态温度场数值分析 贾爱芹， 陈建军， 阎 彬 (西安电子科技大学电子装备结构设计教育部重点实验室，西安 710071 ) 摘要:为了对鼓式制动器导热中物理参数和边界条件的有界不确定性进行瞬态温度场分析，建立了制动鼓瞬态温 度场数值模拟的有限元计算模型.同时，将其参数和边界条件均视为区间变量，在有限元离散和时间差分方法基础 上，将区间有限元分析与摄动方法相结合，导出了有界不确定性参数瞬态温度场响应上下界的摄动计算公式，获得 了鼓式制动器结构的瞬态温度场响应范围.计算结果说明了所提出方法的可行性和有效性. 关键 词:汽车鼓式制动器;区间分析;区间参数;矩阵摄动;瞬态温度场 中图分类号: U463.511 文献标志码:A Numerical Analysis on Transient Temperature Field of a Braking Drum with Interval Parameters JIA Ai-qin , CHEN Jian-jun , YAN Bin (Key Laboratory of E1ectronic Equipment Structure Design (Xidian University) , Ministry of Education , Xi an 710071 , China) Abstract: In order to analyze the transient temperature field to the uncertainty physical parameters and boundary conditions as drum brake is carrying though heat conduction. And a numerical simulation is es- tablished for the finite element calculation model of the transient temperature field of drum brake , in which the parameters and boundary conditions of drum brake are regarded as interval variables. Interval finite element analysis and perturbation method are combined based on finite element discrete and time difference method. Perturbation calculation formula of the uncertain parameters transient temperature re- sponse is derived , and the transient temperature field response range of drum brake structural is ob- tained. Calculation shows the method is feasibility and effectiveness. Key words: automotive drum brake; interval analysi