金属橡胶减振器准静态加载力学性能  

Quasi-static mechanical property of metal rubber vibration absorber

作　　者：彭云强 贾东[1] 钟卫洲[1,2] 韦利明 PENG Yunqiang;JIA Dong;ZHONG Weizhou;WEI Liming(Institute of Systems Engineering,China Academy of Engineering Physics,Mianyang Sichuan 621999,China;Shock and Vibration of Engineering Materials and Structures Key Laboratory of Sichuan Province,Mianyang Sichuan 621999,China)

机构地区：[1]中国工程物理研究院总体工程研究所,四川绵阳621999 [2]工程材料与结构冲击振动四川省重点实验室,四川绵阳621999

出　　处：《航空动力学报》2023年第11期2666-2674,共9页Journal of Aerospace Power

基　　金：国家自然科学基金(12172344)。

摘　　要：基于金属橡胶减振器实际服役场景,设计了金属橡胶减振器横向和轴向准静态加载夹具,获取了5种型号共175个金属减振器横向和轴向准静态力学性能数据。借助数据分析软件对试验数据进行高阶多项式拟合,成功确定了5种金属橡胶减振器的横向和轴向载荷-位移曲线平均值和性能边界。结果表明:减振器横向和轴向载荷-位移曲线分散性并不服从常见的高斯概率分布规律,且难以同时兼顾,轴向加载时MR2型减振器分散性最小,MR3型减振器分散性最大,而横向加载时MR3分散性最小,MR2分散性最大。相关性能边界可为金属橡胶减振器的选型和安全性、可靠性评定提供重要支撑。基于μCT三维断层扫描分析设备,亦建立了金属减振器中金属丝组件的三维编织形貌,并成功确定了不同高度区域金属丝体积。Based on the actual service environment of metal rubber vibration absorber,the transverse and axial quasi-static loading fixtures of vibration absorbers were designed.The corresponding quasi-static mechanical properties of 175 metal shock absorbers,which can be divided into 5 kinds of types,were successfully obtained.Furthermore,the experimental data were fitted with high order polynomial on the basis of commercial software.The average values and performance boundaries of transverse and axial loaddisplacement curves for the 5 kinds of metal rubber vibration absorbers were successfully determined.The results showed that the dispersions of transverse and axial load-displacement curves of vi-bration absorbers did not obey the common law of Gaussian probability distribution,making difficult to be taken into account at the same time.The dispersion of MR2 was the minimum and MR3 was the maximum under axial loading,but the dispersion of MR3 was the minimum and MR2 the maximum under transverse loading.The corresponding per-formance boundaries can provide important support for the model selection and safety assessment of metal rubber vibra-tion absorber.According to the three-dimensional computed tomography analytical device ofμCT,the three-dimensional morphology of metal wire component contained in the metal rubber vibration absorber was established.Furthermore,the volume of metal wire in different height regions were determined successfully.

关 键 词：金属橡胶减振器 准静态试验 性能边界 可靠性评定 三维形貌 

分 类 号：V231.9[航空宇航科学与技术—航空宇航推进理论与工程]