首页> 外文会议>World Tribology Congress III 2005 vol.2 >A NEW MODEL OF THERMOELASTOHYDRODYNAMIC LUBRICATION IN DYNAMICALLY LOADED JOURNAL BEARINGS
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A NEW MODEL OF THERMOELASTOHYDRODYNAMIC LUBRICATION IN DYNAMICALLY LOADED JOURNAL BEARINGS

机译:动态加载滑动轴承中热弹性体动力学润滑的新模型

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摘要

A comprehensive method of thermoelastohydrodynamic (TEHD) lubrication analysis for dynamically loaded journal bearings is presented. The Reynolds equation in the film is solved using the Finite Element (FEM) discretization. Thermal distortions as well as the elastic deformation of the bearing surfaces are computed using FEM method. The lubrication film temperature is treated as a time-dependent three-dimensional variable with a parabolic variation with respect to the film thickness. In order to compute the film and solid temperature, a new heat flux conservation algorithm is proposed. Fourier series approximate the instantaneous temperature fields in the solid boundary layers. Solving the complex problem of big end connecting rod bearing TEHD lubrication proves the algorithm efficiency.
机译:提出了一种动态加载的滑动轴承热弹性流体动力(TEHD)润滑分析的综合方法。影片中的雷诺方程是使用有限元(FEM)离散化求解的。使用FEM方法计算轴承表面的热变形以及弹性变形。润滑膜温度被视为随时间变化的三维变量,相对于膜厚具有抛物线变化。为了计算薄膜和固体温度,提出了一种新的热通量守恒算法。傅里叶级数近似于固体边界层中的瞬时温度场。解决了大端轴承TEHD润滑的复杂问题,证明了算法的有效性。

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