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.
This publication is cited in the following 11 articles:
VP Efimov, “Tensile strength test and fracture toughness test of cores with axial hole”, IOP Conf. Ser.: Earth Environ. Sci., 773:1 (2021), 012040
V. P. Efimov, “Fracture of Structured Rocks and Materials in Nonuniform Stress Fields”, J Min Sci, 56:4 (2020), 529
M. A. Legan, V. A. Blinov, A. G. Demeshkin, A. Yu. Larichkin, A. N. Novoselov, “HYDRAULIC FRACTURING OF THICK-WALLED CYLINDRICAL BODIES”, J Min Sci, 56:5 (2020), 683
V. P. Efimov, “Integral Criterion for Determination of Tensile Strength and Fracture Toughness of Rocks”, J Min Sci, 55:3 (2019), 383
VP Efimov, “Tensile fracture of rocks under uniaxial compression”, IOP Conf. Ser.: Earth Environ. Sci., 134 (2018), 012014
M. A. Legan, V. A. Blinov, “Stress Analysis for Perforated Cylinders with Combined Use of the Boundary Element Method and Nonlocal Fracture Criteria”, J Appl Mech Tech Phy, 59:7 (2018), 1227
V. P. Efimov, “Features of Uniaxial Compression Failure of Brittle Rock Samples with Regard to Grain Characteristics”, J Min Sci, 54:2 (2018), 194
M.A. Legan, V.A. Blinov, “Strength calculations of perforated cylinders with combined use of the boundary element method and non-local fracture criteria”, Comp. Contin. Mech., 10:3 (2017), 332
M A Legan, V A Blinov, A Yu Larichkin, A N Novoselov, “Application of the boundary elements method for modeling of the fracture of cylindrical bodies by hydraulic fracturing”, J. Phys.: Conf. Ser., 894 (2017), 012052
V. P. Efimov, “Tensile strength of rocks by test data on disc-shaped specimens with a hole drilled through the disc center”, J Min Sci, 52:5 (2016), 878
S. V. Suknev, “Experimental substantiation of nonlocal failure criteria for geomaterial plates with a circular hole under nonequicomponent compression”, J Min Sci, 51:3 (2015), 435
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