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A thermal EHL investigation on plate-pin hinge pairs in silent chains using a narrow finite line contact
Industrial Lubrication and Tribology ( IF 1.6 ) Pub Date : 2020-03-02 , DOI: 10.1108/ilt-11-2019-0498
Mingyu Zhang , Jing Wang , Jinlei Cui , Peiran Yang

Purpose

The purpose of this paper is to numerically study the variations of oil film pressure, thickness and temperature rise in the contact zone of plate-pin pair in silent chains.

Design/methodology/approach

A steady-state thermal elastohydrodynamic lubrication (EHL) model is built using a Ree–Eyring fluid. The contact between the plate and the pin is simplified as a narrow finite line contact, and the lubrication state is examined by varying the geometry and the plate speed.

Findings

With increase in the equivalent radius of curvature, the pressure peak and the central film thickness increase. Because the plate is very thin, the temperature rise can be neglected. Even when the influence of the rounded corner region is less, a proper design can beneficially increase the minimum film thickness at both edges of the plate. Under a low entraining speed, strong stress concentration results in close-zero film thickness at both edges of the plate.

Originality/value

This study reveals the EHL feature of the narrow finite line contact in plate-pin pairs for silent chains and will support the future works considering transient effect, surface features and wear.



中文翻译:

使用窄有限线接触对无声链中的板销铰链对进行热EHL研究

目的

本文的目的是通过数值研究静默链中板-销对接触区的油膜压力,厚度和温度升高的变化。

设计/方法/方法

使用Ree-Eyring流体建立了稳态热弹性流体动力润滑(EHL)模型。板和销之间的接触简化为狭窄的有限线接触,并且通过改变几何形状和板速度来检查润滑状态。

发现

随着等效曲率半径的增加,压力峰值和中心膜厚度增加。由于板非常薄,因此可以忽略温度升高。即使当圆角区域的影响较小时,适当的设计也可以有益地增加板的两个边缘处的最小膜厚度。在低的夹带速度下,强应力集中导致板的两个边缘处的膜厚度接近零。

创意/价值

这项研究揭示了用于静默链的板销对中的狭窄有限线接触的EHL特性,并将支持考虑瞬态效应,表面特性和磨损的未来工作。

更新日期:2020-03-02
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