无保持架轴承滚动体与变速曲面静接触有限元

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本站小编 Free考研考试/2024-10-07

作者:赵彦玲，王明珠，侯新新，秦生
Authors:ZHAO Yan-ling,WANG Ming-zhu,HOU Xin-xin,QIN Sheng摘要:摘要:满装轴承因去掉保持架而使承载能力提高且轻量化，目前已经受到国内外****的关注，但针对滚动体接触的理论研究较少。提出在外圈滚道增加局部变速曲面来改变滚动体与滚道接触状态的原理，基于赫兹理论建立滚动体与滚道接触力及接触应力模型，分析变速曲面参数对滚动体间及滚道接触状态影响因素；通过有限元数值模拟对滚动体与滚道、滚动体与变速曲面进行仿真并获得可量化参数，确定滚动体进出变速曲面接触应力及应变的变化规律；结合物理样机对所设计的变速曲面进行磨损试验，用于验证理论的正确性。结果表明滚动体与变速曲面边缘接触力大于中间位置，相邻滚动体滚过变速曲面时处于非接触状态。本研究为无保持架球轴承动态磨损提供理论基础。
Abstract:Abstract:At present, scholars at home and abroad have paid attention to the improvement of bearing capacity and lightweight due to the removal of cage, but the theoretical research on rolling element contact is less.The principle of adding local variable speed surface to outer ring raceway to change the contact state between rolling element and raceway is proposed.Based on Hertz theory, the contact force and contact stress model between rolling element and raceway are established, and the influence factors of variable speed surface parameters on contact state between rolling elements and raceway are analyzed.Through finite element numerical simulation, the rolling element and raceway, rolling element and variable speed surface are simulated and obtained. The change law of contact stress and strain of the rolling element in and out of the variable speed surface is determined by quantifiable parameters, and the wear test of the designed variable speed surface is carried out with the physical prototype to verify the correctness of the theory The results show that the contact force between the rolling body and the variable speed surface edge is greater than that at the middle position, and the adjacent rolling body is in noncontact state when rolling through the variable speed surface.This study provides a theoretical basis for the dynamic wear of no cage ball bearings.

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无保持架轴承滚动体与变速曲面静接触有限元

本站小编 Free考研考试/2024-10-07

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