某航空发动机主轴轴承参数优化设计
范红伟1,艾青牧2,李家新1,曾昭阳1,刘森3
(1.哈尔滨工业大学 机电工程学院,黑龙江 哈尔滨 150001;2.哈尔滨工业大学 航天学院,黑龙江 哈尔滨 150001;3.中国航发哈尔滨轴承有限公司,黑龙江 哈尔滨 150027)
摘要:随着轴承寿命研究的深入,有必要对轴承性能影响因素进行划分,使之更加具体化、公式化。为提高轴承的高可靠性并优化轴承设计参数,应用响应曲面(Box-Behnken)试验设计方法,利用Cobra软件模拟仿真分析了内沟曲率系数、外沟曲率系数和径向游隙对轴承性能的影响。选取内沟曲率系数、外沟曲率系数和径向游隙为自变量,以功效系数法确定统一函数y为响应值,获得了自变量与响应值间的数学回归模型,能较准确地优化出统一函数的确定值。结果表明:内沟曲率系数和外沟曲率系数对轴承性能影响最显著,径向游隙影响不显著。最优参数组合为内沟曲率系数0.515、外沟曲率系数0.515、径向游隙0.14 mm时,统一函数y值为0.645、轴承寿命为1.04×106 h、外圈应力为965.683 MPa、内圈应力为964.527 MPa。
关键词:参数优化;沟曲率系数;高可靠性
中图分类号:V233.4+5 文献标志码:A doi:10.3969/j.issn.1006-0316.2020.11.003
文章编号:1006-0316 (2020) 11-0017-07
Optimum Design of Spindle Bearing Parameters for an Aeroengine
FAN Hongwei1,AI Qingmu2,LI Jiaxin1,ZENG Zhaoyang1,LIU Sen3
( 1.School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China; 2.School of Astronautics, Harbin Institute of Technology, Harbin 150001, China;3.AECC Harbin Bearing Co., Ltd., Harbin 150027, China )
Abstract:With the development of bearing life research, it is necessary to divide the influencing factors of bearing performance to make them more specific and formulaic. In order to improve the reliability of bearings and optimize the design parameters of bearings, the influence of curvature coefficient of inner and outer groove and the radial clearance on the performance of bearings are simulated and analyzed by using the experimental design method of Box-Behnken and Cobra software. The curvature coefficient of inner and outer groove and radial clearance are selected as independent variables, and the unified function y is determined as the response value by the efficiency coefficient method. The mathematical regression model between the independent variable and the response value is obtained, which can more accurately optimize the determined value of the unified function. The results show that the inner and outer groove curvature coefficient have the most significant effect on the bearing performance, while the radial clearance has no significant effect. The optimum parameters are inner groove curvature coefficient 0.515, outer groove curvature coefficient 0.515, radial clearance 0.14mm, 

uniform function y value 0.696, bearing life 1.04×106 h, outer ring stress 965.683 MPa and inner ring stress 964.527 MPa.
Key words:parameters optimization;groove curvature coefficient;high reliability
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收稿日期:2020-06-19
作者简介:范红伟(1988-),女,黑龙江哈尔滨人,硕士,工程师,主要研究方向为机械设计制造及其自动化,E-mail:fanhongwei0401@hit.edu.cn。
 

 

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