摘要
传统的磁流变悬置只采用单一的工作模式(如挤压式或阀式),并且在较短的行程所能提供的可控阻尼有限,很难适应大功率动力装置的隔振需求。挤压-阀混合悬置装置则充分利用了磁流变材料的挤压模式和具有径向流动的阀模式,在较小位移下能够产生大阻尼力,具有性能稳定可靠并且在有限的工作行程能够产生较大阻尼力的优点。文中对挤压阀悬置动态实验进行研究,通过动态实验分析了对隔振性能有重要影响的可控阻尼和刚度特性。结果表明,新型悬置的动刚度随着频率的增加先快速增大,随后逐渐趋于平缓,而等效阻尼随着频率的增加而快速减小,在20 Hz降低幅度逐渐趋于平缓。
Traditional magnetorheological mounts only use a single working mode(such as extrusion or valve type)and can provide limited controllable damping in a short stroke,so it is difficult to adapt to the vibration isolation requirements of high-power power devices.The extrusion-valve hybrid suspension device takes full advantage of the extrusion mode of the magnetorheological material and the valve mode with radial flow,which can generate a large damping force at a small displacement,and has stable and reliable performance and limited work.The stroke can produce the advantage of a larger damping force.This paper studies the dynamic experiment of the extrusion valve mount.Through the dynamic experiment,the controllable damping and stiffness characteristics,which have an important impact on the vibration isolation performance,are analyzed.The results show that the dynamic stiffness of the new mount first increases rapidly with the increase of frequency,and then gradually tends to be flat,while the equivalent damping decreases rapidly with the increase of frequency,and the decreasing range gradually tends to be flat at 20 Hz.
作者
孙民
梁宇航
周洲
陈序
刘兵
竺启斌
王炅
张广
SUN Min;LIANG Yuhang;ZHOU Zhou;CHEN Xu;LIU Bing;ZHU Qibin;WANG Jiong;ZHANG Guang(Jiangsu Institute of Special Equipment Safety Supervision and Inspection,Nanjing 210002,China;School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China;School of Mechanical Engineering,Zhejiang University of Technology,Hangzhou 310023,China;XGM Corporation Limited,Taizhou 317100,China)
出处
《机械工程师》
2023年第1期69-72,共4页
Mechanical Engineer
基金
国家市场监督管理总局科技计划项目“特种装备扭转冲击载荷的磁流变缓冲安全控制技术研究”(S2020MK666)。
关键词
挤压-阀混合悬置装置
动态实验
可控阻尼
刚度特性
extrusion-valve hybrid suspension device
dynamic experiment
controllable damping
stiffness characteristics
