考虑油液压缩性的液弹阻尼器动力学模型  

Dynamic Model of Fluidlastic Damper Considering Hydraulic Compressibility

作　　者：曹哲 黄珺[1] CAO Zhe;HUANG Jun(China Helicopter Research and Development Institute,Jingdezhen 333001,China)

机构地区：[1]中国直升机设计研究所,江西景德镇333001

出　　处：《直升机技术》2020年第4期12-15,共4页Helicopter Technique

摘　　要：液弹阻尼器是一种新型的旋翼摆振阻尼器,兼有粘弹阻尼器与液压阻尼器两者的工作特性,其弹性元件部分可提供弹性刚度调整旋翼摆振频率,液压元件部分提供工作中的大部分阻尼,以避免直升机地面共振的发生。介绍了液弹阻尼器的工作原理,在考虑油液压缩性的情况下,建立液弹阻尼器性能计算模型,并将计算结果与试验结果进行对比分析,验证了模型正确性。The fluidlastic damper is a new kind of lead-lag damper.The fluidlastic damper combines characteristics of hydraulic damper and viscoelastic damper.Itselastic part can provide elastic stiffness to adjust the lead-lag frequency of rotor,and its hydraulic part can provide most damping to avoid the ground resonance.This paper introduced the working principle of fluidlastic damper.The dynamic compressibility was considered in the model of the fluidlastic damper.The rationality and feasibility of the model were verified by comparing the theoretical model calculation results with the experimental results.

关 键 词：液弹阻尼器 压缩性 动力学 弹性刚度 阻尼刚度 

分 类 号：V245.1[航空宇航科学与技术—飞行器设计] V229