中国机械工程2016，Vol.27Issue(15)：2015-2019,2020,6.DOI:10.3969/j.issn.1004-132X.2016.15.005
挤压油膜阻尼器油膜阻尼系数识别及分析
Damping Coefficient Identification and Analysis for Squeeze Film Dampers
摘要
Abstract
In order to identify damping coefficients of SFD,the experimental tests were re-searched.Firstly,the bidirection excitation rig was excited by signal generator and power amplifier. Then the excitation and response data were obtained by impedance head.Lastly,damping coefficients of SFD were obtained by the least squares fit based on the principles of mechanical impedance.The in-fluence of SFD parameters on damping coefficients was researched by changing oil width and clearance.The experimental tests show that the oil damping presents a trend of nonlinear increase with the increase of oil width.Oil damping can be increased by increasing the oil width,then the damping performance of the damper is improved.With the increase of the oil film gap,oil damping presents a trend of nonlinear decrease,and damping performance is declined.关键词
挤压油膜阻尼器/油膜阻尼/机械阻抗法/双向激励Key words
squeeze film damper(SFD)/oil damping/mechanical impedance/bidirection excita-tion分类
航空航天引用本文复制引用
周海仑,冯国全,张明,艾延廷..挤压油膜阻尼器油膜阻尼系数识别及分析[J].中国机械工程,2016,27(15):2015-2019,2020,6.基金项目
国家自然科学基金资助项目(51505300) （51505300）
航空科学基金资助项目(2014ZB54008) （2014ZB54008）
辽宁省自然科学基金资助项目(2015020126) （2015020126）
