摘要
针对液压互联悬架中气液混合流体对悬架系统特性的影响,推导了气液混合流体物理性质的时变特性模型,提出一种非线性形变修正函数,用以修正所建立的阻尼阀阀片变形等效模型,从而建立了一种考虑气液混合流体时变特性的阀片式单缸液压互联悬架非线性动力学模型,并通过台架试验加以验证。仿真结果表明:气液混合流体时变特性会导致液压互联悬架系统阻尼特性曲线出现明显的“迟滞”现象,并降低阻尼力的峰值,与试验结果对比显示,所提出的建模方法能准确描述“迟滞”现象,且与台架试验结果基本吻合。
In view of the effects of gas⁃liquid emulsion in hydraulically interconnected suspension(HIS)system,a time⁃varying characteristics model for the physical properties of gas⁃liquid emulsion is derived,a nonlin⁃ear deformation correction function is proposed for correcting the equivalent shim deformation model built for damp⁃ing valve and hence a nonlinear dynamics model of valve⁃type single⁃cylinder HIS system considering the time⁃vary⁃ing characteristics of gas⁃liquid emulsion is established and then verified by bench test.The results of simulation show that the time⁃varying characteristics of gas⁃liquid emulsion may lead to the appearance of the“hysteresis”phe⁃nomenon on the characteristic curve of HIS system with reduced damping force peak.The comparison with test re⁃sults demonstrates that the modeling method proposed can accurately describe the“hysteresis”phenomenon with a result basically agreeing with test one.
作者
谭博欢
林祥
张邦基
郭春杰
张农
Tan Bohuan;Lin Xiang;Zhang Bangji;Guo Chunjie;Zhang Nong(Hunan University,State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body,Changsha 410082;BOGE Rubber&Plastics Zhuzhou Co.,Ltd.,Zhuzhou 412000;School of Automotive and Transportation Engineering,Hefei University of Technology,Hefei 230009)
出处
《汽车工程》
EI
CSCD
北大核心
2021年第2期287-295,共9页
Automotive Engineering
基金
国家自然科学基金(5187051675)资助。
关键词
液压互联悬架
气液混合流体
阻尼阀
迟滞
台架试验
hydraulically interconnected suspension
gas⁃liquid emulsion
damping valve
hysteresis
bench test