Abstract
An equilibrium thermodynamic approach is employed to derive a continuum-level expression for the field-induced stress in uniaxial anisotropic materials, such as electro- and magnetorheological suspensions. This model introduces new electro- and magnetostriction coefficients, which are material parameters that describe the strain dependence of the dielectric and permeability tensors as well as the field-induced stresses. An idealized microscopic model illustrates the relationships between microscopic parameters and the macroscopic magnetostriction coefficients. The model is used to determine the stresses in common applications; predictions from the continuum approach agree with direct calculations of the normal stress and static shear modulus of magnetorheological suspensions.
Published Version
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