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Keywords: cyclic loading
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Proceedings Papers

Paper presented at the 56th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2022
Paper Number: ARMA-2022-0529
... of full field strain measurement for locating the point of inflection in deformation rate analysis. Cyclic loadings were performed on Brazilian disc specimens of Adelaide black granite and the deformation process was monitored using digital image correlation (DIC) and AE monitoring system. The tests were...
Proceedings Papers

Paper presented at the 56th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2022
Paper Number: ARMA-2022-0545
... experiments, this paper introduces a novel cyclic injection procedure to effectively fracture rock at lower-than-normal breakdown pressure without incurring additional equipment or hardware costs. The experiments reveal that • With an optimized cyclic loading design, we can effectively and consistently...
Proceedings Papers

Paper presented at the 56th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2022
Paper Number: ARMA-2022-0560
... out true triaxle cyclic loading and unloading tests on granite, marble and sandstone. Duan (Duan et al., 2021)analyzed the influence of true triaxle graded cyclic intermediate principal stress on coal deformation, energy consumption and damage through experiments of coal mechanics and damage...
Proceedings Papers

Paper presented at the 56th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2022
Paper Number: ARMA-2022-0056
... - formation assembly is established to analyze the stress law of cement sheath. The integrity of the cement sheath is analyzed. The results show that the elastic modulus of cement is 6 GPa and the Poisson’s ratio is 0.17. The compressive strength and tensile strength of cement after cyclic loading are 90MPa...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-2138
... ABSTRACT: Gas storage caverns built within rock salt formations experience cyclic loading conditions either when gas is injected into the storage or when the gas is retrieved. The behavior of polycrystalline rock salt under cyclic loading conditions is well documented in the literature...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-2882
... loading-unloading. From Hook s law, the elastic strain is given as: elastic E = (5) Then, the plastic strain can be calculated by substituting Eq.(5) in Eq. (4) which gives: plastic E = (6) Alternatively, can be calculated in the nominal space by = . 1.3. Cyclic Loading In order...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0340
... and (2) well-designed adaptable modeling and calculating process. These two aspects are far from being fully studied. In this paper, triaxial compression and alternating loading tests were designed for cement stone. Its mechanical property under cyclic loading was revealed and could provide import...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-047
... pressure, which is like the behavior of rock under uniaxial and tri-axial cyclic loading, cyclic injection can bring about fatigue. (2) For spiral perforation completion wellbore, the hydraulic fracture initiation only starts at the weakest perforation. Once a fracture is open, other perforation holes...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-035
... cement property Upstream Oil & Gas damage mechanics cement chemistry pore pressure Simulation failure criterion cement formulation cyclic loading elasticity modulus cement sheath integrity triaxial compression test Reservoir Characterization casing and cementing criterion...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0308
... by cyclic loading at room temperature and low confining pressure (Pc = 1 MPa). Load cycles are performed within the elastic regime, up to yielding, and after successive increments of steady ductile flow. At the tested conditions, the samples exhibit ductile behavior with slight work hardening...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0469
...1. INTRODUCTION Rock engineering structures, such as underground tunnels, dam foundations and bridge abutments, are likely to be subjected to dynamic cyclic loadings resulting from earthquakes, rock blasting, rock bursts, etc. Widely existing in these rock structures, intermittent jointed rocks...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0659
... as the cyclic loading. To evaluate the possible different impacts of regular and irregular cyclic loading on soil behavior, the irregular (real) urban noises data were converted to regular (modified) data. The result showed that although the total amounts of stress were equal in both regular and irregular data...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-569
... Abstract: Laboratory experiments were conducted on prismatic Indiana limestone specimens with a flaw, to examine the effect of uniaxial cyclic loading on crack growth and, most importantly, the effect of opening/closing of the crack on transmitted and reflected elastic waves. All specimens...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-467
.... The numerical simulation adopted an elasticplastic constitutive model that can take into account the long-term accumulation of soil deformation and excess pore water pressure under a huge number of cyclic loadings. The simulated results, including long-time displacement of soils around the tunnel, ground...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-488
... with pre-existing cracks under static loading has been studied widely. In this study, the fracturing behaviour of Brisbane Tuff, under static and cyclic loading has been analysed applying an ISRM standard Cracked Chevron Notched Brazilian Disc (CCNBD) geometry. Specifically, X-ray Computed Tomography (CT...
Proceedings Papers

Paper presented at the 48th U.S. Rock Mechanics/Geomechanics Symposium, June 1–4, 2014
Paper Number: ARMA-2014-7622
... process is examined by the digital image correlation method, and it is shown that the length of the fracture process zone under cyclic loading is about 60% larger than that under monotonic loading. In parallel with the experiments, a theoretical model is developed to explain the observed size effect...
Proceedings Papers

Paper presented at the 48th U.S. Rock Mechanics/Geomechanics Symposium, June 1–4, 2014
Paper Number: ARMA-2014-7482
... Abstract The Solution Mining Research Institute (SMRI) has recently embarked on inquiries into the effect cyclic loading (both mechanical and thermal) might have on salt. Some of this interest stems from the concept of using salt caverns as a storage medium for renewable energy projects (e.g...
Proceedings Papers

Paper presented at the 46th U.S. Rock Mechanics/Geomechanics Symposium, June 24–27, 2012
Paper Number: ARMA-2012-628
... ABSTRACT: This study presents the results of laboratory diametrical compression tests performed on Brisbane tuff disc specimens to investigate their mixed mode fracturing response to static and cyclic loading. Both the static and cyclic loading tests were carried out on Cracked Chevron Notched...
Proceedings Papers

Paper presented at the 45th U.S. Rock Mechanics / Geomechanics Symposium, June 26–29, 2011
Paper Number: ARMA-11-464
... of temperature and traffic-induced cyclic loading. The mechanical behavior of rock, and pre-existing or newly-formed cracks under static loading, has been thoroughly investigated. However, the response of rock to the cyclic, repetitive stresses resulting from dynamic loading has been generally neglected...

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