基于超声作用的磁流变液阻尼器设计与分析  

Design and Analysis of Magnetorheological Fluid Dampers Based on Ultrasonic Effects

作　　者：强鹭升 王均山[1] 陈超[1] 王福飞[1] QIANG Lusheng;WANG Junshan;CHEN Chao;WANG Fufei(State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016)

机构地区：[1]南京航空航天大学机械结构力学及控制国家重点实验室

出　　处：《中国机械工程》2019年第14期1658-1664,1672,共8页China Mechanical Engineering

基　　金：国家自然科学基金资助项目(51575259);中央高校基本科研业务费专项资金资助项目(NS2015004);江苏高校优势学科建设工程项目;江苏省普通高校研究生科研创新计划资助项目(KYLX15_0226)

摘　　要：为减小磁流变液阻尼器(MRD)零磁场时的角动量损耗,设计了一种基于超声场作用的磁流变液阻尼器。该阻尼器内置盘型超声振子辐射超声场,可以减小阻尼器零场阻尼力矩。采用有限元法进行了超声振子动力学分析和阻尼器磁路仿真,并通过实验验证了超声振子的输出性能。基于Bingham模型得到了阻尼器的力矩模型。在高速地面负载实验台上进行了阻尼器输出性能测试和超声场调节零场阻尼实验,结果证明超声场可明显减小该阻尼器零场阻尼。In order to reduce the angular momentum losses of MRDs under no magnetic field, a MRD was designed based on the effects of ultrasonic field. The damper had a built-in plate-type ultrasonic vibrator for the generation of ultrasonic fields, which might reduce the damping moments of the damper under no magnetic field. The dynamic characteristics of the ultrasonic vibrators and the magnetic circuits of the damper were analyzed by the FEM, and the output performances of the ultrasonic vibrators were verified by the experiments. Based on the Bingham model, the theoretical moment model of the dampers was derived. The output performance measurements of the dampers and the damping adjustment experiments of ultrasonic field under no magnetic field were conducted on the high-speed ground load test system. The experimental results show that the ultrasonic field has a significantly reduction effect on the damping of the dampers under no magnetic field.

关 键 词：磁流变液阻尼器 阻尼力矩 超声场 有限元分析 

分 类 号：TH134[机械工程—机械制造及自动化] TB559[理学—物理]