Experimental Studies of the Influence of Dynamic Loading on the Elastic Properties of Sandstone

Mikhail Guzev, Evgenii Kozhevnikov, Mikhail Turbakov, Evgenii Riabokon and Vladimir Poplygin
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Mikhail Guzev: Department of Oil and Gas Technologies, Perm National Research Polytechnic University, 614990 Perm, Russia
Evgenii Kozhevnikov: Department of Oil and Gas Technologies, Perm National Research Polytechnic University, 614990 Perm, Russia
Mikhail Turbakov: Department of Oil and Gas Technologies, Perm National Research Polytechnic University, 614990 Perm, Russia
Evgenii Riabokon: Department of Oil and Gas Technologies, Perm National Research Polytechnic University, 614990 Perm, Russia
Vladimir Poplygin: Department of Oil and Gas Technologies, Perm National Research Polytechnic University, 614990 Perm, Russia

Energies, 2020, vol. 13, issue 23, 1-14

Abstract: Under dynamic loading, the geomechanical properties of porous clastic rocks differ from those in quasistatic loading. A small experimental rig was built to directly assess the influence of vibrations on the uniaxial compressive strength (UCS), Young modulus, and Poisson’s ratio. A piezoelectric actuator powered by a signal from an oscillator was used in the rig as a generator of vibrations. A laser sensor and eddy current probe measured the longitudinal and transverse deformation. Tinius Hounsfield and Instron Series 4483 installations were used to determine the geomechanical properties of new red sandstone in a quasistatic regime. The boundaries of elastic deformations determined in the quasistatic loading were implemented in the dynamic loading. To perform the experiments in the elastic zone (on the graph of stress (σ)–strain (ε)), small samples with diameters ranging between 7.5 and 24.7 mm were manufactured. The investigation demonstrated that the Young’s modulus of the sandstone increased with increasing values of the dynamic load and frequency.

Keywords: heterogeneous rocks; mechanical properties; dynamic loading; stress–strain state (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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