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首页> 外文会议>International Symposium on Stability Control of Rotating Machinery(ISCORMA-4); 20070827-31; Calgary(CA) >THE EFFECT OF STRUCTURAL DISTORTION ON THE FATIGUE LIFE OF LARGE-DIAMETER BALL BEARING
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THE EFFECT OF STRUCTURAL DISTORTION ON THE FATIGUE LIFE OF LARGE-DIAMETER BALL BEARING

机译：结构变形对大直径球轴承疲劳寿命的影响

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摘要

Large-diameter special configuration ball bearings feature narrow raceways with low structural stiffness. They are susceptible to local distortions caused by the surrounding structures, which are often subjected to heavy loading. This presents a difficulty in the design process which relies mainly on defining the individual rolling-element loads within the bearing under the assumption of rigid circular and flat supporting structures. Therefore, the application of large-diameter ball and roller bearing rings as the critical components in rotating machines becomes more of a design task than making a catalog selection. This paper will demonstrate how the finite element analysis can be utilized to estimate the effects of structural distortions on the performance of a large-diameter bearing. The procedure will be presented to determine the load distribution in rolling elements of a four-point contact ball bearing and the case study of the PHILIPS CT scanner main bearing will be provided.
机译：大直径特殊配置的球轴承具有狭窄的滚道，结构刚度低。它们容易受到周围结构引起的局部变形的影响，而周围结构经常承受重载荷。这给设计过程带来了困难，该过程主要依靠在刚性圆形和扁平支撑结构的假设下确定轴承内的各个滚动元件载荷。因此，将大直径的滚珠和滚子轴承套圈用作旋转机械中的关键部件，比选择目录更为重要。本文将演示如何利用有限元分析来估计结构变形对大直径轴承性能的影响。将介绍确定四点接触球轴承滚动元件中载荷分布的程序，并提供PHILIPS CT扫描仪主轴承的案例研究。

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