MEASUREMENT OF VISCOPLASTIC PROPERTIESOF A LIQUID IN EXPERIMENTS 
WITHA TORSION VISCOSIMETER

V. P. Beskachko,a O. A. Golovnya,a
and A. E. Korenchenkob

UDC 532.5

The results of a numerical solution of the problem of vibrations
of a torsion viscosimeter filled with an incompressible viscoplastic
liquid are presented. It has been shown that in the vicinity of
the rotation axis there appears a dead zone, whose boundary changes
in the process of vibrations. The influence of plastic properties
of the liquid on the characteristics of viscosimeter vibrations has
been determined. A method for identifying viscoplastic properties
by the observed parameters of vibrations is proposed.

aYuzhno-Uralsk State University, 76 Lenin Ave., Chelyabinsk,
454080, Russia; bMetallurgy Institute of the Urals Branch
of the Russian Academy of Sciences, 101 Amundsen Str., Ekaterinburg,
620016, Russia. Translated from Inzhenerno-Fizicheskii Zhurnal,
Vol. 80, No. 1, pp. 124-127, January-February, 2007. Original article
submitted July 4, 2005.