Investigation of the misalignment and modification for crown roller contacts under mixed lubrication

IF 1.6 3区 工程技术 Q3 ENGINEERING, MECHANICAL
Xin Pei, Wanyou Yang
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引用次数: 0

Abstract

A new contact model of finite-length crowned roller bearing, capable of handling lubrication, eccentric load, and misalignment situations, is established in this study. Simulation results of interface pressure, film thickness distribution, flash temperature, and subsurface stress can be obtained with different speeds, misalignment angles, load eccentricity, and roller trimming parameters. It is found that edge trimming can greatly reduce the stress concentration at the edge, and there are optimal trimming parameters to minimize the concentrated stress under normal load and eccentric load. When the eccentric load exceeds a certain angle, the increase in the maximum stress can be very large, which may lead to premature failure of the interface. Meanwhile, the staggering velocity caused by the misalignment of the roller axis also has a certain influence on the distribution of the lubricating film.
混合润滑条件下冠形滚子接触不对中及修正研究
建立了一种能够处理润滑、偏心载荷和偏心情况的有限长度冠状滚子轴承接触模型。得到了不同转速、错对角度、载荷偏心和滚轮修整参数下的界面压力、膜厚分布、闪热温度和次表面应力的仿真结果。研究发现,修边可以大大降低边缘处的应力集中,且存在使正常载荷和偏心载荷下的应力集中最小的最优修边参数。当偏心载荷超过一定角度时,最大应力的增加可能非常大,这可能导致界面过早破坏。同时,由于滚子轴线不对准引起的速度错动对润滑膜的分布也有一定的影响。
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来源期刊
CiteScore
4.20
自引率
5.00%
发文量
110
审稿时长
6.1 months
期刊介绍: The Journal of Engineering Tribology publishes high-quality, peer-reviewed papers from academia and industry worldwide on the engineering science associated with tribology and its applications. "I am proud to say that I have been part of the tribology research community for almost 20 years. That community has always seemed to me to be highly active, progressive, and closely knit. The conferences are well attended and are characterised by a warmth and friendliness that transcends national boundaries. I see Part J as being an important part of that community, giving us an outlet to publish and promote our scholarly activities. I very much look forward to my term of office as editor of your Journal. I hope you will continue to submit papers, help out with reviewing, and most importantly to read and talk about the work you will find there." Professor Rob Dwyer-Joyce, Sheffield University, UK This journal is a member of the Committee on Publication Ethics (COPE).
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