Typical dampers and energy harvesters based on characteristics of ferrofluids  

作　　者：Yanwen LI Pengdong HAN Decai LI Siyu CHEN Yuming WANG 

机构地区：[1]State Key Laboratory of Tribology,Tsinghua University,Beijing 100084,China [2]School of Mechanical Engineering,North China University of Water Resources and Electric Power,Zhengzhou 450045,China

出　　处：《Friction》2023年第2期165-186,共22页摩擦（英文版）

基　　金：the National Natural Science Foundation of China(Grant Nos.51735006,51927810,and U1837206);Beijing Municipal Natural Science Foundation(Grant No.3182013)。

摘　　要：Ferrofluids are a type of nanometer-scale functional material with fluidity and superparamagnetism.They are composed of ferromagnetic particles,surfactants,and base liquids.The main characteristics of ferrofluids include magnetization,the magnetoviscous effect,and levitation characteristics.There are many mature commercial ferrofluid damping applications based on these characteristics that are widely used in numerous fields.Furthermore,some ferrofluid damping studies such as those related to vibration energy harvesters and biomedical devices are still in the laboratory stage.This review paper summarizes typical ferrofluid dampers and energy harvesting systems from the 1960s to the present,including ferrofluid viscous dampers,ferrofluid inertia dampers,tuned magnetic fluid dampers(TMFDs),and vibration energy harvesters.In particular,it focuses on TMFDs and vibration energy harvesters because they have been the hottest research topics in the ferrofluid damping field in recent years.This review also proposes a novel magnetic fluid damper that achieves energy conversion and improves the efficiency of vibration attenuation.Finally,we discuss the potential challenges and development of ferrofluid damping in future research.

关 键 词：ferrofluid characteristics damping applications ferrofluid viscous dampers ferrofluid inertia dampers tuned magnetic fluid dampers(TMFDs) vibration energy harvesters 

分 类 号：TM619[电气工程—电力系统及自动化] TH117.1[机械工程—机械设计及理论]