中国物理B ›› 2018, Vol. 27 ›› Issue (7): 78301-078301.doi: 10.1088/1674-1056/27/7/078301

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇    下一篇

The electric field and frequency responses of giant electrorheological fluids

Hanqing Zhao(赵汉青), Rong Shen(沈容), Kunquan Lu(陆坤权)   

  1. 1 School of Physics and Technology, Wuhan University, Wuhan 430072, China;
    2 Beijing National Laboratory for Condensed Matter Physics, Key Laboratory of Soft Matter and Biological Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
  • 收稿日期:2018-03-29 修回日期:2018-05-02 出版日期:2018-07-05 发布日期:2018-07-05
  • 通讯作者: Rong Shen E-mail:rshen@iphy.ac.cn
  • 基金资助:

    Project supported by the National Key R&D Program of China (Grant No. 2017YFA0403000) and the National Natural Science Foundation of China (Grant No. 11574355).

The electric field and frequency responses of giant electrorheological fluids

Hanqing Zhao(赵汉青)1,2, Rong Shen(沈容)2, Kunquan Lu(陆坤权)2   

  1. 1 School of Physics and Technology, Wuhan University, Wuhan 430072, China;
    2 Beijing National Laboratory for Condensed Matter Physics, Key Laboratory of Soft Matter and Biological Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
  • Received:2018-03-29 Revised:2018-05-02 Online:2018-07-05 Published:2018-07-05
  • Contact: Rong Shen E-mail:rshen@iphy.ac.cn
  • Supported by:

    Project supported by the National Key R&D Program of China (Grant No. 2017YFA0403000) and the National Natural Science Foundation of China (Grant No. 11574355).

摘要:

The giant electrorheological (ER) fluid is based on the principle of a polar molecule dominated electrorheological (PM-ER) effect. The response of the shear stress for PM-ER fluid in alternate electric fields with triangle/square wave forms for different frequencies has been studied. The results show that the shear stress cannot well follow the rapid change of electric field and the average shear stresses of PM-ER fluids decrease with the increasing frequency of the applied field due to the response decay of the shear stress on applied field. The behavior is quite different from that of traditional ER fluids. However, the average shear stress of PM-ER fluid in a square wave electric field of ±E at low frequency can keep at high value. The obtained knowledge must be helpful for the design and operation of PM-ER fluids in the applications.

关键词: electrorheological fluid, frequency response

Abstract:

The giant electrorheological (ER) fluid is based on the principle of a polar molecule dominated electrorheological (PM-ER) effect. The response of the shear stress for PM-ER fluid in alternate electric fields with triangle/square wave forms for different frequencies has been studied. The results show that the shear stress cannot well follow the rapid change of electric field and the average shear stresses of PM-ER fluids decrease with the increasing frequency of the applied field due to the response decay of the shear stress on applied field. The behavior is quite different from that of traditional ER fluids. However, the average shear stress of PM-ER fluid in a square wave electric field of ±E at low frequency can keep at high value. The obtained knowledge must be helpful for the design and operation of PM-ER fluids in the applications.

Key words: electrorheological fluid, frequency response

中图分类号:  (Electro- and magnetorheological fluids)

  • 83.80.Gv
83.85.Cg (Rheological measurements—rheometry) 83.85.Jn (Viscosity measurements) 83.60.Np (Effects of electric and magnetic fields)