胶质阻尼隔振器的力学模型及隔振性能研究  

THE MECHANICAL MODEL AND VIBRATION ISOLATION PROPERTIES OF COLLOIDAL DAMPERS

作　　者：余慕春 赵鹏[2] 牛智玲[1] 李炳蔚[1] 南宫自军[1] YU Mu-chun;ZHAO Peng;NIU Zhi-ling;LI Bing-wei;NANGONG Zi-jun(China Academy of Launch Vehicle Technology,Beijing 100076,China;State Key Laboratory of Mechanics and Control of Mechanical Structures,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)

机构地区：[1]中国运载火箭技术研究院,北京100076 [2]南京航空航天大学机械结构力学及控制国家重点实验室,南京210016

出　　处：《工程力学》2020年第12期220-227,共8页Engineering Mechanics

基　　金：2017年装备预研领域基金《振动与噪声控制新材料应用技术》项目(6140210210511)。

摘　　要：胶质阻尼(Colloidal damper)是由水和布满纳米微孔的疏水材料混合而成的新型隔振材料,以胶质阻尼为工作介质即可形成胶质阻尼隔振器。该文通过准静态和动态加载试验研究了胶质阻尼的迟滞特性,分析了加载频率、振幅对迟滞曲线的影响;之后建立了包含三次非线性刚度、粘性阻尼特性和干摩擦阻尼特性的胶质阻尼隔振器力学模型,以实测动态加载迟滞曲线为基础开展了模型参数识别;最后完成了胶质阻尼隔振器的隔振性能评估。研究表明,胶质阻尼隔振器具有良好的低频隔振性能和大阻尼特性,在设备减振领域具有良好的应用前景。The colloidal damper is a new type of vibration isolation material consisting of water and hydrophobic nano-porous particles.To perform modeling and mechanical analysis of the colloidal damper,a colloidal damper isolator was formed by sealing the colloidal damper into a compressible chamber.Quasi-static and dynamic loading experiments were conducted to investigate the hysteresis of colloidal damper isolators.A mechanical model with unknown parameters,including the cubic stiffness,viscous and Coulomb frictional damping,was established.Dynamic loading experiments were utilized to identify the unknown parameters.The vibration isolation performance of the colloidal damper was evaluated.The results show that the colloidal damper exhibited excellent low frequency vibration isolation properties and a strong damping effect.Therefore,it has a favorable application prospect as a damper for vibration reduction.

关 键 词：胶质阻尼 疏水微孔材料 动态加载 阻尼参数识别 隔振 

分 类 号：TU112.596[建筑科学—建筑理论]