6 June 1997 Electrorheological damping in precision systems
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Abstract
Based on a dependence of the high-concentration ER-fluid parameters (viscosity, elasticity) on an electric intensity and mechanical load-dependent characteristics, a theoretical analysis is made of an oscillatory single-mass system with electrorheological dampers. The results of an analytical solution of the equation of motion, calculation results are compared with experimental data on the mechanisms responsible for variation of the damping characteristics (damping decrement, transfer coefficient) of a vibroprotection system for the precision equipment. It is shown that for effective damping it is necessary to apply an electric field of low and moderate intensities (E less than 1 kV/mm). In this case, an increment of the effective viscosity of the ER-fluid is high and the natural frequency does not attain its maximum. This finding has been employed for designing a special-purpose controllable high-voltage source used in an active vibroprotection system for low-frequency and small-amplitude strains.
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Evguenia V. Korobko, Zinovy P. Shulman, Galina V. Voronovich, "Electrorheological damping in precision systems", Proc. SPIE 3041, Smart Structures and Materials 1997: Smart Structures and Integrated Systems, (6 June 1997); doi: 10.1117/12.275712; https://doi.org/10.1117/12.275712
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