A Theoretical Modelling of the Chain Structure Formation in Electrorheological Fluids

LIU Yu-lan; WANG Biao; WANG Dian-fu

Volume 24 Issue 4

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Article Navigation > Applied Mathematics and Mechanics > 2003 > 24(4): 342-350

LIU Yu-lan, WANG Biao, WANG Dian-fu. A Theoretical Modelling of the Chain Structure Formation in Electrorheological Fluids[J]. Applied Mathematics and Mechanics, 2003, 24(4): 342-350.

Citation:

LIU Yu-lan, WANG Biao, WANG Dian-fu. A Theoretical Modelling of the Chain Structure Formation in Electrorheological Fluids[J]. Applied Mathematics and Mechanics, 2003, 24(4): 342-350.

Citation:

LIU Yu-lan, WANG Biao, WANG Dian-fu. A Theoretical Modelling of the Chain Structure Formation in Electrorheological Fluids[J]. Applied Mathematics and Mechanics, 2003, 24(4): 342-350.

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A Theoretical Modelling of the Chain Structure Formation in Electrorheological Fluids

Research Center for Composite Materials, Harbin Institute of Technology, Harbin 150001, P. R. China

Received Date: 2001-11-27
Rev Recd Date: 2003-03-04
Publish Date: 2003-04-15

Abstract

Abstract

A model was developed to understand the aggregation process of the particles in electrorheological(ER) fluids under the action of an applied electric field. By establishing a generalized virtual work principle based on the consideration that the released electromagnetic energy accompatlying the growth of the chain should equal to the dissipated energy related with friction resistance of the coos fluid in the chain formation, the governing differential equation of the chain growth was established.Based on this energy model,the velocity of the chain forming,and the response time of ER fluid can be predicted. The present model can also predict the effect of the temperature and some microshvctural parameters, such as the dielectric constants and concentration of the particles, etc.,on the response of an ER system.
- elecisortheological fluid,
- response time,
- dynamic model

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References(5)

References

[1]	Winslow W M.Induced fibration of suspensions[J].J Appl Phys,1949,20:1137.
[2]	Tao R,Sun J M.Three-dimensional structure of induced electrorheological solid[J].Phys Rev Lett,1991,67:398.
[3]	Klingenberg D J,Van Swol F,Zukoski C F.Dynamic simulation of electrorheological suspensions[J].J Chem Phys,1989,91:7888.
[4]	Parthasarathy M,Klingenberg D J.A microstructural investigation of the nonlinear response of electrorheological supensions[J].Rheol Acta,1995,34:417.
[5]	Klingenberg D J,Van Swol F,Zukoski C F.The small shear rate response of electrortheological suspensions-Ⅱ:Extension beyond the point-dipole limit[J].J Chem Phys,1991,94:6170.

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