Experimental–theoretical technique for determining the equation-of-state parameters for soils

V. G. Bazhenov, S. V. Zefirov, V. Kotov

Institute of Mechanics, Nizhnii Novgorod State University, Nizhnii Novgorod, 603950

Abstract: This paper considers an experimental–theoretical technique for determining pressure–strain curves and curves of yield strength versus pressure for soils based on disagreement between data of physical and numerical modeling of wave processes in a system of split Hopkinson bars with a soil sample in a holder. A convergent iterative procedure was developed to refine the equation-of-state parameters of soils obtained by the Kolsky method. The error of the technique is analyzed, the role of friction and the coefficient of sliding friction between the soil and the deformed holder.

Keywords: soils, equation of state.

UDC: 539.3

Received: 23.07.2003
Accepted: 19.01.2004

 English version: Journal of Applied Mechanics and Technical Physics, 2004, 45:5, 732–740

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