On Elastohydrodynamic Lubrication and Dynamic Characteristics of Multi-Cylinder Diesel Engine Crankshaft-Bearing

doi:10.19423/j.cnki.31-1561/u.2022.02.085

Ship & Boat ›› 2022, Vol. 33 ›› Issue (02): 85-94.DOI: 10.19423/j.cnki.31-1561/u.2022.02.085

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On Elastohydrodynamic Lubrication and Dynamic Characteristics of Multi-Cylinder Diesel Engine Crankshaft-Bearing

YU Cunyin¹, GUO Jie², ZHAO Jian¹, ZHANG Heng¹, WANG Renzhi¹

1. Marine Design & Research Institute of China, Shanghai 200011, China;
2. College of Power and Energy Engineering, Harbin Engineering University , Harbin 150001, China

Received:2021-07-25 Revised:2021-09-25 Published:2022-05-06

多缸柴油机曲轴-轴承弹流润滑及动力学特性研究

于存银¹, 国杰², 赵建¹, 张恒¹, 王仁智¹

1.中国船舶及海洋工程设计研究院上海 200011;
2.哈尔滨工程大学动力与能源工程学院哈尔滨 150001

作者简介:于存银（1994-）,男,硕士,助理工程师。研究方向：动力机械振动噪声。国杰（1985-）,男,博士,副教授。研究方向：机械振动噪声。赵建（1994-）,男,硕士,助理工程师。研究方向：喷水推进器设计。张恒（1994-）,男,硕士,助理工程师。研究方向：推进器设计。王仁智（1996-）,男,硕士,助理工程师。研究方向：推进器低噪声设计。

Abstract

Abstract: The transient vibration of the crankshaft and the coupling characteristics of the bearing lubrication are studied in this paper. The overall finite element modeling of the crankshaft is established based on the finite beam element method. The lubrication characteristics of the dynamically loaded sliding bearing with consideration of the effect of journal misalignment are calculated by the finite difference method. A general and fast modeling and calculation method is proposed to achieve the parametric modeling of the overall system of piston-connecting rod-crankshaft-oil film-bearing. The dynamics of the crankshaft and the lubrication characteristics of the main bearing of the 4102 diesel engine are studied. The elastohydrodynamic lubrication of the crankshaft-bearing system is calculated and analyzed by using the dynamic deformation calculation method rather than the flexibility matrix method.

Key words: crankshaft, main bearing, elastohydrodynamic lubrication, vibration

摘要： 论文进行了曲轴的瞬态振动和轴承润滑的耦合特性研究,基于有限梁单元的方法构造了曲轴的整体有限元模型,基于有限差分法求解计入轴颈受载倾斜效应的动载滑动轴承的润滑特性,并实现了活塞-连杆-曲轴-油膜-轴承的整体系统的参数化建模,提出了一种通用、快速的建模计算方法。以4102柴油机为研究对象,进行了曲轴的动力学和主轴承的润滑特性研究,并采用不同于柔度矩阵法的动力学变形计算方法进行了曲轴-轴承系统的弹流润滑计算分析,进一步考虑了轴承座的瞬态动力学效应对轴瓦表面变形的影响,完善了曲轴-轴承系统的动力学和润滑耦合计算的研究方法。

关键词: 曲轴, 主轴承, 弹流润滑, 振动

CLC Number:

U664.2

YU Cunyin, GUO Jie, ZHAO Jian, ZHANG Heng, WANG Renzhi. On Elastohydrodynamic Lubrication and Dynamic Characteristics of Multi-Cylinder Diesel Engine Crankshaft-Bearing[J]. Ship & Boat, 2022, 33(02): 85-94.

于存银, 国杰, 赵建, 张恒, 王仁智. 多缸柴油机曲轴-轴承弹流润滑及动力学特性研究[J]. 船舶, 2022, 33(02): 85-94.

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On Elastohydrodynamic Lubrication and Dynamic Characteristics of Multi-Cylinder Diesel Engine Crankshaft-Bearing

多缸柴油机曲轴-轴承弹流润滑及动力学特性研究

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