..., as demonstrated by a single-element test in uniaxial compression. Anisotropic damage is controlled by a compressive damage coefficient ζ , which can be interpreted as the ratio of axial damage to lateral damage in a special case of uniaxial compression. Tool-rock frictional contact is investigated using a finite...

... reservoir characterization deformation sedimentary rock simulation numerical simulation ultra-deep dolomite geology indoor experiment journal compression fdem microelement dolomite strength uniaxial compression mechanism characteristic residual strength displacement fdem numerical...

... ABSTRACT The tensile strength of crystalline rocks in Brazilian tests (BT) shows a more significant size dependency than the uniaxial compression strength in uniaxial compression tests (UCT), while the micro-mechanism is still unclear. This study seeks to elucidate the micro-mechanism...

... in the uniaxial compressive strength (UCS) value of granite. However, the UCS value of granite undergoes a significant decline with increasing mica content. Additionally, the presence of quartz intensifies the brittleness of granite, while feldspar enhances the ductility of granite. In the isotropic model...

... characterization characteristic uniaxial compression united states government reservoir geomechanics jointed rock rock mech uniaxial loading static compressive load fracture behavior fissured rock wing crack geology specimen compression coalescence mechanism compressive load failure mode eng...

... government loading compression non-destructive stress measurement method inflection point in-situ stress modulus method cyclic loading strain measurement adelaide uniaxial compression ae method maximum stress deformation karakus ARMA 23 0244 Evaluation of non-destructive stress measurement...

... recently developed a new monitoring system for continuous measurement of displacement, acoustic emissions in addition to environmental parameters and utilized in uniaxial compression, Brazilian tensile and bending tests. It is shown that the new monitoring system can measure long-term responses without...

... are generally considered in most numerical simulation tests, and the accuracy of the micro parameters is difficult to ensure, resulting in low accuracy of the test results. In order to study the influence of micro parameters on the deformation and failure of specimens in uniaxial compression test, PFC2D...

... experimental program using an artificial material was carried out to systematically evaluate the effects of different parameters in rock testing under uniaxial compression. The parameters include the compression platen type, centering of the specimen, loading control method and rate, specimen size, cross...

... ABSTRACT: A practical method determining five elastic constants of a transversely isotropic rock is proposed by the uniaxial compressive strength test and the Brazilian test using specimens from a single-orientation core. The indirect tensile strength of the Brazilian test can be obtained...

... involve testing cylindrical or disc-shaped specimens under uniaxial compression or diametrical loading. But, these stress conditions may not represent the actual stress state under which rock is subjected at depth. A true triaxial testing technique on cubed specimens are, therefore, preferred as it better...

... ABSTRACT: In the process of exploring the mechanical properties of deep strata, we find that the granite after heat treatment has a negative Poisson's ratio effect. Therefore, we carried out the microstructure test and uniaxial compression experiment of granite in Gonghe basin of Qinghai...

... on the freezing-assisted fracturing technology, the tests on the mechanical properties of water-saturated coal under the freezing conditions and laboratory fracturing simulation tests under the freezing treatment were carried out. Uniaxial compression, Brazilian, and Mode-I fracture toughness tests are conducted...

... the thermal treatment levels were higher than 300 °C. The variation of mechanical parameters under compression showed a transition from thermal hardening to thermal cracking at 300 °C. The uniaxial compressive strength and Young's modulus significantly decreased only when the thermal treatment levels were...

... reconstruction. The digital model is simulated using the software ABAQUS and the Drucker–Prager constitutive model via uniaxial compression. Results show that stress concentration usually occurs under axial load. The stress distribution law of elliptical pores is related to the inclination of the pores...

... ABSTRACT: In this study two series of uniaxial compression and indirect tensile (Brazilian) tests, as well as a multi-stage triaxial compression test were performed in order to determine the mechanical properties and to develop a shear failure-criterion for a particular Cemented Paste...

... nonuniform loading Reservoir Characterization upper loading platen international journal failure process splitting Wellbore Design complete stress-strain curve stress-strain curve Rock mechanics specimen uniaxial compression load train ARMA 17-26 A study on stress-strain curve of brittle rock...

... media Upstream Oil & Gas fluid modeling equation of state geological material Zubelewicz loading compression asperity degradation MPa fracture model loading condition strain rate material response mesh uniaxial compression fracture permeability dilatation fracture energy...

... and change the conventional refracturing treatment. hydraulic fracturing Reorientation cryogenic treatment different temperature strength stimulation application liquid nitrogen uniaxial compression Upstream Oil & Gas toughness test nitrogen microfracture re-fracturing tensile...

... Abstract The interactions between defects are important in the behavior of brittle materials. The micromechanical interactions between a circular hole and a crack under uniaxial compression are investigated in this paper. Experiments of specimens containing a hole and a crack are conducted...