ISSN1000 3762 CN41 1148/TH
2016年4期
轴承
Bearing 2016 , No. 4
飞轮用轴承组件热－结构耦合特性分析
代彦宾，邓凯文"，李建华2.3.4倪艳光"邓四二
3339
（1.河南科技大学机电工程学院，河南洛阳471003;2.洛阳轴研科技股份有限公司，河南洛阳
471039：洛阳
471039)
摘要：针对飞轮高速转子转速提高引起的轴承温升和疲劳失效间题，建立了轴承组件热-结构耦合有限元模型。将轴承摩擦功耗和电动机功率作为温度分析的边界条件，利用材料的S-N曲线计算轴承的疲劳寿命。以某型号飞轮用轴承组件为例，分析各工况条件对计算结果的影响。结果表明：轴承组件中电动机温度最高，轮体温度最低，轴承中钢球与套圈的接触区温度较高，且钢球接触表面温度最高，内、外圈次之：温度对轴承组件的应力场和轴承的疲劳寿命影响较大；径向力、转速、环境温度以及电动机功率对轴承的温度、应力和疲劳寿命
均有所影响，但径向力和电动机功率的影响较小，而转速和环境温度的影响较大。关键词：角接触球轴承；轴承组件；热-结构耦合；温度；应力；疲劳寿命
中图分类号：TH133.33*1;0346.2
文献标志码：B
文章编号：10003762(2016)04003307
Analysis on Thermal-Structural Coupling Property of Bearing
AssemblyforFlywheel
Dai Yanbin', Deng Kaiwen', Li Jianhua3, Ni Yanguang",Deng Sier
(1. School of Mechatronices Engineering, Henan University of Science and Technolog, Luoyang 471003, China; 2. Laoyang Bearing Science & Technology Co. ,Lad. ,Luoyang 471039, China;3. Henan Key Laboratory of High oeorooaeaeaaeaoooaeagaaoa
Rolling Bearing Industry, Luoyang 471039, China )
Abstract: Aiming at temperature rise and fatigue failure caused by the increase of rotating speed of high speed rotor for flywheel, a thermal structural coupling finite element model is built for bearing assembly. The frictional power con-sumption of bearings and power of motor are taken as boundary condition for temperature analysis, the fatigue life of bearings is calculated by using S N curve of material. Taking one model of bearing assembly for flywheel as an exam-ple, the effects of different operating conditions on calculation result are analyzed. The results show that the tempera-
ture of motor is the highest in the bearing
assembly and the t
contact zone between steel balls and rings of bea
sishighe
the highest, inner and outer rings in the s
secondplac
sembly and fatigue life of bearings.
The
radialforoe
Theten
ature of wheel body is the lowest. The temperature of and the temperature of contact surface of steel balls is perature has greater effect on stress field of bearing as-
rotating speed, ambient temperature and power of motor have
effect on temperalure, stress and fatigue life of bearings, but the rotating speed and ambient temperature have much greater influence than radial force and power of motor.
Key words: argular contact ball bearing; bearing assembly; thermal structunal coupling; temperature; stress;fatigue life
飞轮的高速转子系统是航天器进行姿态控制
收稿日期：2015-12-10;修回日期：2016-01-11
基金项目：河南省科技创新杰出人才项目（144200510020）作者简介：代彦宾（1989一），男，河南周口人，硕士研究生，研究方向为滚动轴承设计及数字化仿真，E-mail;daiyb
8923@163.com。万方数据
的重要结构，为使飞轮获得更高的效能，通常需要提高转子的转速以获得更大的角动量，但转速过高会引起严重的轴承温升和疲劳失效。因此，研究工况条件对轴承组件温度、应力分布和疲劳寿