高速有质量偏心的轴承-转子系统瞬态热效应的研究  

Study on the transient thermal responses of high speed rotor-bearing with mass unbalance

作　　者：富彦丽 FU Yanli(School of Mechanical Engineering,Shanghai Institute of Technology,Shanghai 200235,China)

机构地区：[1]上海应用技术大学机械工程学院,上海200235

出　　处：《应用技术学报》2023年第4期358-362,共5页Journal of Technology

摘　　要：对轴承油膜和轴瓦的三维瞬态温度场,使用改进Newton-Raphson算法求解雷诺方程和运动方程,编制仿真程序,对高速下有质量偏心的轴承-转子系统的瞬态热效应进行了研究。分别将考虑轴承瞬态三维温度场、瞬态二维绝热温度场得到的轴心运动轨迹和温度响应做了比较。结果表明,在高转速时温度变化对轴心轨迹的影响非常大,如果分析轴承转子系统的稳定性,必须同时考虑轴瓦和油膜的瞬态三维温度场。Considering the transient three-dimensional temperature field of the film and bearing bush,the transient thermal-responses of rotor-bearing system to mass unbalance are performed.The tracks and thermal-responses obtained by considering two-dimensional temperature are compared with the tracks obtained by considering three-dimensional temperature.The results show that the rise of temperature must be considered in the analysis of the stability of high-speed rotor-bearing system.The transient three-dimensional temperature must be considered when analyzing the stability of rotor-bearing.

关 键 词：轴承-转子系统 质量偏心 瞬态三维温度场 

分 类 号：TH133.3[机械工程—机械制造及自动化]