Behavioral model for magnetorheological fluid under a magnetic field using Lekner summation method

Kyung In Jang, Jongwon Seok, Byung-Kwon Min, Sang Jo Lee

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Magnetorheological (MR) fluid is used for various applications due to its controllable viscosity. To predict the behavior of MR fluid under certain three-dimensional (3D) magnetic and shear strain fields, it is essential to model the fluid in an appropriate manner. The behavioral models used in the previous research, however, have serious limitations because most of them oversimplify the inter-particle interactions and employ assumptions valid only under specific geometric configurations and field conditions. In this study, a new model that can predict the behavior of MR fluid under arbitrary 3D magnetic and shear strain fields is proposed. The present work considers an MR fluid configured as a 3D infinite lattice structure. Using the proposed model, the shear stress components themselves, not the dipolar interaction energy, are calculated directly to avoid the mathematical singularity otherwise encountered. The resulting stress functions of the proposed model are transformed into rapidly convergent functions using the Lekner summation method. Finally, the characteristics of the stiffened MR fluid under a magnetic field are investigated using the transformed functions. Numerical computations on the original and transformed functions are performed and compared under selected conditions to ensure the validity and prove the high convergence efficiency of the proposed model.

Original languageEnglish
Pages (from-to)1167-1176
Number of pages10
JournalJournal of Magnetism and Magnetic Materials
Volume321
Issue number9
DOIs
Publication statusPublished - 2009 May 1

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Magnetorheological fluids
magnetorheological fluids
Magnetic fields
magnetic fields
shear strain
Shear strain
stress functions
Particle interactions
particle interactions
shear stress
Shear stress
Viscosity
viscosity
Fluids
fluids
configurations

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

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abstract = "Magnetorheological (MR) fluid is used for various applications due to its controllable viscosity. To predict the behavior of MR fluid under certain three-dimensional (3D) magnetic and shear strain fields, it is essential to model the fluid in an appropriate manner. The behavioral models used in the previous research, however, have serious limitations because most of them oversimplify the inter-particle interactions and employ assumptions valid only under specific geometric configurations and field conditions. In this study, a new model that can predict the behavior of MR fluid under arbitrary 3D magnetic and shear strain fields is proposed. The present work considers an MR fluid configured as a 3D infinite lattice structure. Using the proposed model, the shear stress components themselves, not the dipolar interaction energy, are calculated directly to avoid the mathematical singularity otherwise encountered. The resulting stress functions of the proposed model are transformed into rapidly convergent functions using the Lekner summation method. Finally, the characteristics of the stiffened MR fluid under a magnetic field are investigated using the transformed functions. Numerical computations on the original and transformed functions are performed and compared under selected conditions to ensure the validity and prove the high convergence efficiency of the proposed model.",
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Behavioral model for magnetorheological fluid under a magnetic field using Lekner summation method. / Jang, Kyung In; Seok, Jongwon; Min, Byung-Kwon; Lee, Sang Jo.

In: Journal of Magnetism and Magnetic Materials, Vol. 321, No. 9, 01.05.2009, p. 1167-1176.

Research output: Contribution to journalArticle

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