Rheological properties of high-concentration suspensions used for obtaining electrorheological media
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The rheological properties of high-concentration suspensions used for making electrorheological media have been investigated. We have established the characteristic features of their behavior, including the passage over the yield point with a decrease in viscosity by several decimal orders of magnitude and strain hardening followed by an increase in the shear stress. The effect of thixotropy of these systems and the role of the preceding deformation have been described. The effect of self-sustained stress oscillations resulting from the ambiguity of the rheological characteristic of the material has been revealed.
Keywordselectrorheological media rheological properties straining conditions plasticity viscosity solid-like and liquid-like structures thixotropy self-sustained stress oscillations
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