基于格心型有限体积法的滑动轴承液膜压力分析

PDF(1083 KB)

振动与冲击 ›› 2019, Vol. 38 ›› Issue (6) : 127-131.

论文

杨国栋，曹贻鹏，明平剑，张文平

作者信息 +

Analysis on the film pressure of journal bearings based on the cell-centered finite volume method#br#

YANG Guodong，CAO Yipeng，MING Pingjian，ZHANG Wenping

Author information +

文章历史 +

摘要

在生产设计中，为了达到良好的润滑效果，滑动轴承的轴瓦通常会采用开槽的结构，对某些复杂结构的轴瓦，采用规则化网格很难准确描述其几何特征，其润滑特性的计算也会出现偏差。为了解决该问题，本文采用非结构化网格划分求解域，基于格心型有限体积法离散雷诺方程，采用最小二乘法计算变量梯度，采用共轭梯度法求解方程，通过Fortran语言编程，计算得到轴承的液膜压力分布。通过对比和分析，验证了格心型有限体积法求解润滑问题的适用性和准确性。以该算法为基础，研究了轴承的长径比、偏心率对液膜压力分布的影响。结果表明，长径比增大会降低轴承的峰值压力，同时扩大高压区沿轴承宽度方向的分布；增大偏心率会提高轴承的压力峰值。

Abstract

In order to investigate the film pressure distribution of journal bearings using irregular grids, the Reynolds equation was discretized with the cell-centered finite volume method. The least square method was selected to calculate the variable’s gradients, and the conjugate gradient method was used to solve the equations. The whole numerical algorithm was programmed with Fortran language and the film pressure was achieved finally. The adaptation and accuracy of the algorithm have been validated by comparison and analysis. The influences of the aspect ratio and eccentricity ratio on the pressure distribution were studied, and the results show that the pressure peak value decreases as the aspect ratio increases and the distribution range of higher pressure is expanded along the axis direction, moreover, the pressure peak value becomes larger as the eccentricity ratio increases.

导出引用

杨国栋，曹贻鹏，明平剑，张文平. 基于格心型有限体积法的滑动轴承液膜压力分析[J]. 振动与冲击, 2019, 38(6): 127-131

YANG Guodong，CAO Yipeng，MING Pingjian，ZHANG Wenping. Analysis on the film pressure of journal bearings based on the cell-centered finite volume method#br#[J]. Journal of Vibration and Shock, 2019, 38(6): 127-131

参考文献

[1] 何涛, 邹德全, 卢熙群,等. 考虑轴挠曲的船舶艉轴承混合润滑分析[J]. 哈尔滨工程大学学报, 2013, 34(1):104-109.
HE Tao, ZOU Dequan, LU Xiqun, et al. Mixed lubrication analysis of a ship stern bearing considering bending of shaft[J]. Journal of Harbin Engineering University, 2013, 34(1):104-109.
[2] 米非. 活塞和曲轴轴承润滑的数值仿真[D]. 哈尔滨工程大学, 2008:44~51
   MI Fei. Numerical simulation of piston and crankshaft bearing lubrication[D]. Harbin Engineering University, 2008:44~51
[3] 黄首峰,郭红,张绍林,岑少起. 基于FLUENT的径向滑动轴承油膜压力仿真[J]. 机械设计与制,2012,(10):248-250. [2017-09-28]. DOI：10.19356/j.cnki.1001-3997.2012.10.09
   HUANG Shoufeng, GUO Hong, ZHANG Shaolin, et al.Static characteristics simulation of journal sliding bearingbased on FLUENT[J]. Machinery Design & Manufacture,2012,(10):248-250.DOI:10.3969/j.issn.1001-3997.2012.10.090.
[4] Hartinger M, Gosman D, Ioannides S, et al. CFD Modelling of Elastohydrodynamic Lubrication[C]// World Tribology Congress III. 2005:531-532.
[5] 陶文铨.计算传热学的近代进展[M]. 北京：科学出版社, 2000:1~2.
TAO Wenquan. Recent advances in computational heat transfer. [M]. Science Press, 2000:1~2
[6] 蔡林. 流体动压滑动轴承静特性研究[D]. 哈尔滨工程大学, 2012:1~2
   CAI Lin. Investigation on static performance of hydrodynamics bearing[D]. Harbin Engineering University, 2012:1~2
[7] 李强, 郑水英, 刘淑莲. 基于有限体积法的滑动轴承油膜压力分析[C]// 全国转子动力学学术讨论会. 2008.
   LI Qiang, ZHENG Shuiying, LIU Shulian. Analysis of film pressure of journal bearing based on finite volume method[C] // The National Symposium on rotor dynamics.2008
[8] Fallah N. A cell vertex and cell centred finite volume method for plate bending analysis[J]. Computer Methods in Applied Mechanics & Engineering, 2004, 193(33–35):3457-3470.
[9] Sun J, Gui C. Hydrodynamic lubrication analysis of j-ournal bearing considering misalignment caused by shaftdeformation[J].Tribology International, 2004, 37(10):841-848.
[10] 陈燕生, 沈心敏. 摩擦学基础[M]. 北京航空航天大学出版社, 1991:52~53
   CHEN Yansheng, SHEN Xinmin. Tribology basis[M]. Beihang University Press, 1991:52~53
[11] 龚京风. 热障涂层活塞热应力的有限体积方法研究与应用[D]. 哈尔滨工程大学, 2014: 18
GONG Jingfeng. Research and application of the finite volume method for the thermal barrier coated piston[D]. Harbin Engineering University, 2014:18