This article is cited in 11 papers

Rock tests in nonuniform fields of tensile stresses

V. P. Efimov

Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630091, Russia

Abstract: This paper presents experimental data on the strength of samples tested for bending and diametrically compressed core-shaped samples with a central hole. The obtained strengths of the samples are compared with the strength of samples under uniaxial tension using nonlocal strength criteria. It is shown that the calculated and measured strengths of the rock samples are in good agreement with each other when using a common approach to strength evaluation based on the Neuber–Novozhilov integral fracture criterion.

Keywords: strength, tension, bending, Brazilian method, structural parameter.

UDC: 539.3

Received: 04.07.2011
Revised: 13.02.2013

 English version: Journal of Applied Mechanics and Technical Physics, 2013, 54:5, 857–865

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