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首页> 外文期刊>Tribology International >Thermoelastohydrodynamic analysis of the static performance of tilting-pad journal bearings with the Newton-Raphson method
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Thermoelastohydrodynamic analysis of the static performance of tilting-pad journal bearings with the Newton-Raphson method

机译：牛顿-拉夫森法对斜垫轴颈轴承静态性能的热弹性流体力学分析

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摘要

Thermoelastohydrodynamic lubrication (TEHD) analysis is presented to investigate the static performance of tilting-pad journal bearings. A completely numerical solution is obtained. The Newton-Raphson method is employed to predict the bearing characteristics of the hydrodynamic pressure, the eccentricity and the pad attitude angles simultaneously. For the temperature calculation, three-dimensional (3D) energy equations for the fluid under each pad and 3D heat transfer equations for the pads are solved using a sequential sweeping method. The elastic deformation and thermal expansion of each pad are calculated with the 20-node isoparametric finite element method. It is found that the Newton-Raphson method is a smart and efficient method. The results show that the elastic deformation due to the hydrodynamic pressure and the influence of the temperature elevation play an important role in the calculated bearing system.
机译：提出了热弹性流体动力润滑（TEHD）分析来研究可倾瓦轴颈轴承的静态性能。获得了一个完整的数值解。牛顿-拉夫森法被用来同时预测流体动力压力，偏心率和垫块姿态角的承载特性。对于温度计算，使用顺序扫描方法求解每个垫下的流体的三维（3D）能量方程和垫的3D传热方程。每个垫的弹性变形和热膨胀采用20节点等参有限元方法计算。发现牛顿-拉夫森法是一种聪明而有效的方法。结果表明，水动力压力引起的弹性变形和温度升高的影响在计算的轴承系统中起着重要的作用。

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