Elastohydrodynamic Rotational Lubrication Analysis on the Multi-Body Dynamic Properties of Journal-Bearing Systems

Q4 Physics and Astronomy

Defect and Diffusion Forum Pub Date : 2024-01-09 DOI:10.4028/p-ptk9sd

Yunn Lin Hwang, Adhitya Adhitya

引用次数: 0

Abstract

This research aims to investigate the properties of elastohydrodynamic rotational lubrication analysis on journal-bearing systems. To simulate elastohydrodynamic lubrication on journal-bearing systems, the Elasto-Hydro-Dynamic (EHD) solver is combined with the Multi-Body Dynamic (MBD) solver to create MBD virtual environment with lubricant. The hydrodynamic lubricant is governed by using the Reynolds equation, whereas the elastic contact is governed using Greenwood and Tripp theories. The simulation is performed by changing the operating conditions such as the speed, load, and clearance between two surfaces. One can find these parameters’ effects such as film thickness, hydrodynamic pressure, and friction. The result shows that the friction induced by shaft speed is similar to the Stribeck curve on mixed lubrication regime. Consequently, the clearance, speed, and load will not only affect the friction but also affect the hydrodynamic pressure and film thickness.

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对关节轴承系统多体动态特性的弹性流体力学旋转润滑分析

本研究旨在探讨轴颈轴承系统弹性流体动力旋转润滑分析的特性。为了模拟轴颈轴承系统的弹性流体动力润滑，将弹性流体动力（EHD）求解器与多体动力学（MBD）求解器相结合，创建了带有润滑剂的 MBD 虚拟环境。流体动力润滑剂由雷诺方程控制，而弹性接触则由格林伍德和特里普理论控制。模拟是通过改变两个表面之间的速度、载荷和间隙等运行条件来进行的。可以发现这些参数对薄膜厚度、流体压力和摩擦力的影响。结果表明，轴速引起的摩擦与混合润滑条件下的 Stribeck 曲线相似。因此，间隙、速度和载荷不仅会影响摩擦力，还会影响流体动力压力和油膜厚度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Defect and Diffusion Forum Physics and Astronomy-Radiation

CiteScore

1.20

自引率

0.00%

发文量

127

期刊介绍： Defect and Diffusion Forum (formerly Part A of ''''Diffusion and Defect Data'''') is designed for publication of up-to-date scientific research and applied aspects in the area of formation and dissemination of defects in solid materials, including the phenomena of diffusion. In addition to the traditional topic of mass diffusion, the journal is open to papers from the area of heat transfer in solids, liquids and gases, materials and substances. All papers are peer-reviewed and edited. Members of Editorial Boards and Associate Editors are invited to submit papers for publication in “Defect and Diffusion Forum” . Authors retain the right to publish an extended and significantly updated version in another periodical.