填充MRE的纤维金属混杂复合材料梁阻尼减振性能研究  

Research on Damping and Vibration Reduction Performance of a Fiber-metal Laminate Beam Filled with MRE Core Layer

作　　者：王文煜 周娜[1,2] 吕海宇 李晖 闻邦椿[1,2] WANG Wenyu;ZHOU Na;LV Haiyu;LI Hui;WEN Bangchun(School of Mechanical Engineering and Automation,Northeastern University,Shenyang 110819,China;Key Laboratory of Vibration and Control of Aero-propulsion Systems,Ministry of Education of China,Northeastern University,Shenyang 110819,China)

机构地区：[1]东北大学机械工程与自动化学院,沈阳110819 [2]东北大学航空动力装备振动及控制教育部重点实验室,沈阳110819

出　　处：《噪声与振动控制》2020年第2期23-26,共4页Noise and Vibration Control

基　　金：国家自然科学基金资助项目(51505070,51535082,U1708257);中央高校基本科研业务费专项资金资助项目(N160312001,N170302001,N180302004,N180703018)。

摘　　要：对填充磁流变弹性体芯层的纤维金属混杂复合材料梁减振特性开展试验研究。自主设计并制备具有磁流变弹性体芯层的纤维金属混杂复合材料梁,并首次在梁的内部施加磁场,探究磁场作用下复合梁的阻尼减振性能。设计磁场强度可控的复合梁振动测试系统,并详细介绍系统各个部件的组成和功能。然后归纳出一套合理、规范的不同磁场强度下该类型复合材料梁的振动测试流程,并进行实际测试。研究发现,该类型复合材料梁具有优异阻尼减振性能,前4阶阻尼比大于10%,且施加磁场作用后,还可进一步提升其阻尼,并达到主动控制阻尼性能的目的。The vibration reduction characteristics of a fiber-metal hybrid composite beam filled with magnetorheological elastomer(MRE)core layer are studied experimentally.Firstly,the MRE core layer mixed with the fiber-metal laminated beam is designed and prepared.Internal magnetic field is applied to the beam to explore its damping performance in the magnetic field.Then,the test system with controllable magnetic field is set up and the function of each part of the system is introduced.Also,a reasonable and standard vibration test process of this type of composite beam under different magnetic field intensity is summarized,and the practical measurement tests are undertaken.It is found that the composite beam has excellent damping performance.The damping ratios of the first 4 modes are greater than 10%.Moreover,after the magnetic field is applied,the structural damping can be further improved to achieve the goal of active control of damping capability of this kind of composite beams.

关 键 词：振动与波 磁流变弹性体 纤维金属混杂复合梁 磁场强度 减振特性 阻尼比 

分 类 号：TB535[理学—物理]