双线摆桨毂吸振器减振效率评估研究  

Evaluation of Vibration Reduction Efficiency for Bifilar Hub Absorber

作　　者：凌爱民[1] 王文涛[2] 李明强[2] 朱艳[1] 

机构地区：[1]中国直升机设计研究所旋翼动力学国防科技重点实验室,江西景德镇333001 [2]中国直升机设计研究所强度室,江西景德镇333001

出　　处：《直升机技术》2013年第4期1-6,14,共7页Helicopter Technique

摘　　要：建立了双线摆桨毂吸振器与旋翼和机体的耦合动力学评估模型,通过分析桨毂振动载荷作用下机体的振动响应,评估桨毂上安装双线摆吸振器的减振效率,分析了旋翼、机体模态特性对双线摆减振效率的影响。研究结果表明,双线摆桨毂吸振器的引入实质上是对耦合系统进行调频,旋翼桨毂载荷及量值是确定是否采取双线摆减振设计措施的重要前提。In this paper,the evaluation model for bifilar,rotor and fuselage coupling dynamics was built up.Through analysis of fuselage vibration response excited under hub loads,the vibration re-duction efficiency of mounted bifilar absorber on hub was evaluated,and the analysis of rotor and fu-selage modal characteristics effects on vibration reduction efficiency was made.The study results showed that mounting bifilar hub absorber was to modify frequencies of the coupled dynamic system in fact.The hub vibration loads and their magnitudes were important precondition to determine if the design measure of bifilar hub absorber was taken.

关 键 词：双线摆桨毂吸振器 减振效率 调频 旋翼和机体模态特性 

分 类 号：V214.33[航空宇航科学与技术—航空宇航推进理论与工程]