IDENTIFICATION OF THE NONLINEAR
VISCOUS PROPERTIES OF FLUIDS
BY THE VIBRATIONAL METHOD

I. V. Elyukhina and G. P. Vyatkin

UDC 532.137.3

Effects occurring in an oscillatory viscosimeter upon 
its filling with nonlinear viscous fluids whose rheological properties 
are described by the Ostwald-Weyl model have been revealed. The 
possibilities of the vibrational method for identification of the 
rheological belonging of media to nonlinear viscous ones with a power 
rheological law and of their nonlinear properties in the regime of 
free damped and forced vibrations have been discussed.

@ABSTRACT = South-Ural State University, 76 V. I. Lenin Ave., Chelyabinsk, 
454080, Russia; email: susu@74.ru. Translated from Inzhenerno-Fizicheskii 
Zhurnal, Vol. 78, No. 5, pp. 70-77, September-October, 2005. 
Original article submitted November 17, 2004.