期刊论文

Analysis of Damping Properties of Damping Hole in Bi-directional Hydraulic Shock Absorber for Vehicles

中文

噪声与振动控制

1006-1355

2021

41

02

206-211,260

10.3969/j.issn.1006-1355.2021.02.035

国家自然科学基金资助项目（61179051）； 湖南省自然科学基金资助项目（2019JJ50519）；

本校为第一机构

减振器是汽车悬架系统的重要组件,其减振效果主要受减振器阻尼孔阻尼特性的影响。基于Fluent建立减振器阻尼孔阻尼特性有限元分析模型,采用正交试验设计、方差分析和单因素分析法,探索阻尼孔几何特征参数、油液黏度及活塞运动速度对减振器阻尼孔阻尼力的影响规律。研究结果表明:1)阻尼孔直径与活塞运动速度对阻尼力有显著影响,阻尼孔长度与油液黏度的影响相对不显著;2)在给定参数条件下,阻尼力随阻尼孔直径增加而减小,随活塞运动速度增加而增加。阻尼孔直径越小,活塞运动速度越快,两者对阻尼力的影响越显著,减振器振幅衰减速度越快;3)阻尼力除受油液流经阻尼孔时流层间的内摩擦力影响外,还受流动...

Shock absorbers are important components of automobile suspension systems, and their damping effects are mainly affected by the damping properties of damping holes. In this paper, the finite element analysis model of damping properties of the damping holes in shock absorbers was established based on Fluent code. The influences of geometrical parameters of the damping holes, oil viscosity (OV) and piston movement velocity (PMV) on the damping forces of the damping holes were explored by means of orthogonal test design, variance analysis and single factor analysis. The research results show that...