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Reliability of a Hydrodynamic Journal Bearing

机译：流体动力学轴承的可靠性

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摘要

Journal fluid bearings are widely used in industry due to their static and dynamic behavior and their very low coefficient of friction. The technical requirements to improve the new technologies design are increasingly focused on the indicators of dependability of systems and machines. Then, it is necessary to develop a methodology to study the reliability of bearings in order to improve and to evaluate their design quality. Few works are referenced in literature concerning the estimation of the reliability of fluid journal bearings. This paper deals with a methodology to study the failure probability of a hydrodynamic journal bearing. An analytical approach is proposed to calculate static characteristics in using the Reynolds equation. The commonly methods used in structural reliability such as FORM (First Order Reliability Method), SORM (Second Order Reliability Method) and Monte Carlo are developed to estimate the failure probability. The function of performance bounding two domains (domain of safety and domain of failure) is estimated for several geometrical configurations of a hydrodynamic journal bearing (long journal bearings with the hypotheses of Sommerfeld, Gumbel and Reynolds, and a short journal bearing with the hypothesis of Gumbel).
机译：由于它们的静态和动态行为以及它们非常低的摩擦系数，杂志轴承广泛用于工业。改进新技术设计的技术要求越来越关注系统和机器可靠性指标。然后，有必要开发一种方法来研究轴承的可靠性，以便改进和评估其设计质量。关于估计流体轴颈轴承可靠性的文献中，少量作品。本文涉及研究流体动力学轴承的故障概率的方法。提出了一种分析方法来计算使用Reynolds方程的静态特性。开发了结构可靠性（如表格（第一订单可靠性），Sorm（二阶可靠性方法）和蒙特卡罗的常用方法，以估计故障概率。估计流体动力学轴颈轴承的几种几何配置（具有Sommerfeld，Gumbel和Reynolds的假设的长期轴承，以及具有短暂的轴承的短期轴承，估计了两个域（安全和失败域的域的域）的功能估计gumbel）。

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