高速角接触球轴承结构参数与不同加载对其动态特性影响的研究

发布时间：2018-05-28 01:07

本文选题：角接触球轴承 + 拟动力学　；参考：《吉林大学》2017年硕士论文

【摘要】：轴承在承受过大的载荷、弯矩或者转速的情况下,极易产生失效的情况。为了避免轴承应力集中而导致产生疲劳、失效的现象,对角接触球轴承的接触分析显得尤为重要。本文针对角接触球轴承结构进行静力学与拟动力学接触分析。依据赫兹接触理论及拟动力学分析理论,研究了求解径向载荷、轴向载荷、联合载荷等不同工况下的最大承载钢球的理论及方法,依此可用于求解接触应力、接触应变、接触角、刚度等等。基于ANSYS软件,建立了角接触球轴承的静态模型与动态模型,提出了加载方案及约束的设定方法,将仿真结果与赫兹理论结果相对比,验证了本文提出的建模方法、加载方式的正确及有效性。进而,在静力学分析中,研究径向载荷、轴向载荷、联合载荷对轴承结构接触特性的影响机制,探讨了联合载荷下的接触应力、接触应变、接触角、接触椭圆、接触位置的变化规律及影响;在拟动力学分析中,探讨了沟道曲率、载荷与转速等结构参数对接触性能的影响,并对轴承刚度、保持架滑动率、旋滚比等一系列动态性能进行了研究。最后,实现了轴承接触分析软件的二次开发,大大提高了计算效率。本文研究适用于轴承中低速及高速等多种运转工况。可为复杂加载工况下轴承的设计及应用提供工程分析参考。
[Abstract]:Bearing is prone to failure under excessive load, bending moment or rotational speed. In order to avoid fatigue and failure caused by bearing stress concentration, contact analysis of diagonal contact ball bearings is particularly important. In this paper, the structure of angular contact ball bearings is analyzed by statics and pseudodynamics. According to Hertz contact theory and pseudo-dynamic analysis theory, the theory and method of solving the maximum bearing steel ball under different working conditions, such as radial load, axial load and combined load, are studied, which can be used to solve contact stress and contact strain. Contact angle, stiffness, etc. Based on ANSYS software, the static and dynamic models of angular contact ball bearings are established, and the loading scheme and constraint setting method are proposed. The simulation results are compared with the results of Hertz theory, and the proposed modeling method is verified. Correct and effective loading method. Furthermore, in static analysis, the influence mechanism of radial load, axial load and combined load on the contact characteristics of bearing structure is studied, and the contact stress, contact strain, contact angle, contact ellipse under combined load are discussed. In the pseudo-dynamic analysis, the influence of structural parameters such as channel curvature, load and rotational speed on contact performance, bearing stiffness and cage slip rate are discussed. A series of dynamic properties, such as roll ratio, are studied. Finally, the secondary development of bearing contact analysis software is realized, and the calculation efficiency is greatly improved. This paper is suitable for various operating conditions such as low speed and high speed of bearings. It can provide engineering analysis reference for the design and application of bearing under complex loading condition.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TH133.3

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