润滑
瞬态(计算机编程)
机械
雷诺方程
摩擦学
材料科学
流体轴承
加速度
瞬态响应
机械工程
结构工程
工程类
计算机科学
物理
湍流
经典力学
雷诺数
操作系统
电气工程
作者
Yan Kang,Hu‐Lin Li,Ning Ding,Dan Jiang,Xianghui Meng
出处
期刊:Industrial Lubrication and Tribology
[Emerald (MCB UP)]
日期:2022-09-27
卷期号:74 (10): 1174-1185
被引量:5
标识
DOI:10.1108/ilt-05-2022-0166
摘要
Purpose Friction and wear are very important factors in predicting the performance of journal bearings, particularly under heavy load in start-up processes. However, there are few relevant studies on the numerical model. This study aims to establish a transient-mixed lubrication model to predict the performance of journal bearings, focusing on the friction and wear behavior under heavy load during start-up. Design/methodology/approach The average Reynold equation, three-dimensional energy equation, shear stress model for friction and Archard model for wear are coupled in the transient model by finite difference method. The linear wear simulation method is bought out to reduce the update times and the calculation time. Findings The different start-up accelerations and linear wear times set are compared and discussed, which indicates a reasonable start-up acceleration is necessary for journal bearings under heavy load during start-up, and setting linear wear times is an effective method to reduce the simulation time significantly. Furthermore, the wear profile in the start-up process spreads in both the clearance and circumferential directions, but mainly in the clearance direction, which increases the minimum film thickness and affects the friction performance. Originality/value This study is of great significance for the numerical prediction of the transient performance of journal bearings during start-up considering friction and wear.
科研通智能强力驱动
Strongly Powered by AbleSci AI