滚动轴承接触分析

发布时间：2018-01-08 14:35

本文关键词：滚动轴承接触分析　出处：《湖南大学》2012年硕士论文　论文类型：学位论文

【摘要】：本论文对滚动轴承的类型、功能和发展历程以及滚动轴承接触应力研究和发展的现状进行了综述。首先论述了轴承的力学分析和接触问题的有限元分析,然后对圆柱滚子轴承进行了接触分析和优化设计。通过论证分析认为,根据轴承材料疲劳极限进行接触应力分析和优化设计,可以有效减轻轴承重量,同时又能满足轴承的寿命和能力要求。本论文对圆柱滚子轴承采用了Hertz理论、数值有限元和RomaxDesigner软件三种计算方式,通过对比计算分析,有限元计算、RomaxDesigner软件计算与Hertz理论数学计算分析结果接近,且有限元和RomaxDesigner软件计算分析结果相近比Hertz理论数学计算更准确。而RomaxDesigner软件计算不受模型网格划分影响,其计算结果与有限元基本一致,但计算效率高于有限元计算。本文还在不改变轴承结构、材料和接口尺寸的前提下,以轴承的径向游隙、滚动体修形和滚动体数量为设计变量,对圆柱滚子轴承进行了优化设计。通过优化设计,使用RomaxDesigne软件对圆柱滚子轴承接触应力进行了计算分析,在满足轴承疲劳强度的前提下,可以有效的减轻轴承重量。通过上述研究,对滚动轴承接触应力分析有了更加深刻的认识,积累了轴承接触分析的经验。而以接触应力分析的设计计算和优化设计具有较高实用价值,能更好的为航空滚动轴承的应用设计和研究提供服务。
[Abstract]:In this paper, the types, functions and development of rolling bearings, as well as the research and development of contact stress of rolling bearings are summarized. Firstly, the mechanical analysis and finite element analysis of contact problems are discussed. Then the contact analysis and optimization design of cylindrical roller bearing are carried out. It is concluded that according to the fatigue limit of bearing material contact stress analysis and optimization design can effectively reduce the weight of bearing. At the same time can meet the bearing life and capacity requirements. In this paper, Hertz theory, numerical finite element method and RomaxDesigner software are used to calculate cylindrical roller bearing. The calculation results of RomaxDesigner software are close to those of Hertz theory. The results of finite element analysis and RomaxDesigner analysis are more accurate than that of Hertz theory, but RomaxDesigner software is not meshed by model. Influence. The results are consistent with the finite element method, but the efficiency is higher than that of the finite element method. On the premise of not changing the structure, material and interface size of the bearing, the radial clearance of the bearing, the shape modification of the rolling body and the number of the rolling body are taken as the design variables in this paper. The contact stress of cylindrical roller bearing is calculated and analyzed by RomaxDesigne software. Under the premise of satisfying the bearing fatigue strength, the bearing weight can be effectively reduced. Through the above research, the contact stress analysis of rolling bearings has a deeper understanding and accumulated the experience of contact analysis of bearings. However, the design calculation and optimization design of contact stress analysis have higher practical value. It can provide better service for the application design and research of aeronautical rolling bearing.
【学位授予单位】：湖南大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH133.33

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