中国机械工程2025，Vol.36Issue(11)：2492-2500,2508,10.DOI:10.3969/j.issn.1004-132X.2025.11.003
考虑气体溶解和温度的油气悬架输出特性研究
Research on Output Characterization of Hydro-penumatic Suspensions Considering Gas Dissolution and Temperature
摘要
Abstract
Considering the influences of gas dissolution and temperature variation in the suspensions during the vehicle working,a specific type of hydro-pneumatic suspension was taken as the research ob-ject.By incorporating Henryp's law,a revised mathematical model of the suspension's output characteris-tics was proposed,and the performances was analyzed under different excitation signals.A testing platform was constructed for evaluating the output characteristics of the hydro-pneumatic suspensions.The output characteristics were tested under different steps and sinusoidal signal excitations,in order to investigate the dynamic and static dissolution characteristics of the gas,as well as the output force characteristics variation curves with temperature and gas dissolution.The results indicate that gas dissolution is solely related to gas pressure,with a positive correlation between the them,which is independent with the excitation frequency and amplitude.A higher gas working pressure may result in bigger solubility and faster dissolution rate.Furthermore,higher gas dissolution causes a reduction in the gas pressure of the hydro-pneumatic suspen-sions,thereby decreasing the output force.Conversely,an increase in oil temperature will result in an in-creasing of the gas pressure,leading to an increase in output force,accompanied by minor gas precipitation phenomena.Considering factors such as temperature and gas solubility,the normalized root mean square error between the theoretical and testing results of the output force characteristics of the hydro-pneumatic suspensions is as 0.76%.关键词
溶解/温度变化/油气悬架/气体压力Key words
dissolution/temperature variation/hydro-pneumatic suspension/gas pressure分类
机械制造引用本文复制引用
刘秀梅,罗云龙,李贝贝,刘申,刘启航,李永涛,赵巧..考虑气体溶解和温度的油气悬架输出特性研究[J].中国机械工程,2025,36(11):2492-2500,2508,10.基金项目
国家自然科学基金(51875559) （51875559）
江苏省自然科学基金(BK20242085) （BK20242085）
