Synthesis: modelling variability and constraints

Carlson, Rolf

doi:10.21437/eurospeech.1991-249

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1996

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“…Such an understanding needs to take into account magnetic nonlinearities and the effects of particle saturation. There has been recent interest in this problem using finite element approaches (Ginder and Davis 1994) and analytical approximations (Carlson 1991, Ginder et al 1995, Jolly et al 1996.…”

Section: Introductionmentioning

confidence: 99%

A model of the behaviour of magnetorheological materials

Jolly

Carlson

Munoz

1996

Smart Mater. Struct.

779

606

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Magnetorheological materials are a class of smart materials whose rheological properties may be rapidly varied by application of a magnetic field. These materials typically consist of micron-sized ferrous particles dispersed in a fluid or an elastomer. A quasi-static, one-dimensional model is developed that examines the mechanical and magnetic properties of magnetorheological materials. This model attempts to account for magnetic non-linearities and saturation by establishing a mechanism by which magnetic flux density is distributed within the composite material. Experimental evidence of the viscoelastic behaviour and magnetic properties of magnetorheological fluids and elastomers suggests that the assumptions made in the model development are reasonable. It is shown that the model is semi-empirical in that it must be fit to the experimental data by adjusting a parameter that accounts for unmodelled magnetic interactions.

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