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Keywords: dissipation
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Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-512
... ABSTRACT: Rock dynamic fragmentation is essentially a process of energy consumption, and energy dissipation analysis is essential to elucidate the mechanism of rock dynamic crushing. In this paper, the split Hopkinson pressure bar (SHPB) shock compression tests on sandstone and cement mortar...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-832
... and experimental data demonstrate the validity and reliability of the proposed model formulation. Reservoir Characterization plasticity model shale plasticity parisio dissipation international journal model simulation evolution triaxial test mechanical behavior constitutive model Upstream Oil...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0470
... ABSTRACT: During the confined comminution of granular materials, the work input is transformed into elastic energy stored in the grains, breakage energy used to generate new surfaces, energy dissipated by friction between grains in contact, and redistribution energy dissipated by the relative...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0820
... damage (CD) stress thresholds. The possible mechanisms for seismic attenuation based on the friction dissipation model and displacement discontinuity model have also been put forward. strength seismic measurement seismic velocity monitoring Upstream Oil & Gas ghazvinian Reservoir...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-270
... Abstract: During comminution, several energy dissipation processes operate simultaneously, including plastic work due to internal friction, fracture energy release due to particle breakage, and plastic work due to the rearrangement of fragments. Recent studies show that the plastic work due...
Proceedings Papers

Paper presented at the 48th U.S. Rock Mechanics/Geomechanics Symposium, June 1–4, 2014
Paper Number: ARMA-2014-7355
... Reservoir Characterization damage mechanics constitutive model equation geomaterial rate equation experimental result internal variable dissipation elasto-plastic-damage model different value formulation mechanics 1. INTRODUCTION The disposal of radioactive waste arising from nuclear power...
Proceedings Papers

Paper presented at the 47th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2013
Paper Number: ARMA-2013-145
... properties by advocating that the main contribution to the energy dissipation derives from the brittle breakage of the mineral compounds. These results stress the importance of identifying the microscopic physical processes that regulate inelastic deformation. For this reason, they can be a conceptual...
Proceedings Papers

Paper presented at the 45th U.S. Rock Mechanics / Geomechanics Symposium, June 26–29, 2011
Paper Number: ARMA-11-271
... Reservoir Characterization reservoir geomechanics dissipation salt body pore pressure pressure change prediction relaxation Upstream Oil & Gas perturbation sediment safe-mud window technical conference stress path deformation effective stress principal stress salt relaxation...
Proceedings Papers

Paper presented at the The 42nd U.S. Rock Mechanics Symposium (USRMS), June 29–July 2, 2008
Paper Number: ARMA-08-354
.... Most important in this process were pre-existing weak soft rock zones. As a result of the suction process of pore water pressure dissipation out of the micro-cracks (dilatation suction and dissipation), viscous creeping developed. The presentation focuses on numerical back analyses which were made...
Proceedings Papers

Paper presented at the The 42nd U.S. Rock Mechanics Symposium (USRMS), June 29–July 2, 2008
Paper Number: ARMA-08-054
... ABSTRACT: Effective utilization of explosive energy in and around the blasthole gives better fragmentation with reduced unwanted results. Ineffective utilization of energy leads to dissipation of energy in the form of ground vibrations, noise, fly rock, back break etc. An attempt is made...
Proceedings Papers

Paper presented at the DC Rocks 2001, The 38th U.S. Symposium on Rock Mechanics (USRMS), July 7–10, 2001
Paper Number: ARMA-01-0975
... homogenization approach state law granular material Reservoir Characterization dissipation mass density expression kinetic theory Rock Mechamcs /n the Nattonal Interest, Elsworth, Ttnucct & Heasley (eds), ¸2001 Swets & Zetthnger Ltsse, ISBN 90 2651 827 7 Modeling of great extent rock avalanches using...
Proceedings Papers

Paper presented at the Vail Rocks 1999, The 37th U.S. Symposium on Rock Mechanics (USRMS), June 7–9, 1999
Paper Number: ARMA-99-0071
... extensometer dissipation rapid drawdown threshold rain event public safety water level quarry quarry wall wall stability slab ground water Rock Mechanics for Industo4, Amadei, Kranz, Scott & Smeallie (eds) ¸ 1999 Balkema, Rotterdam, ISBN 90 5809 052 3 Stability of high overhanging rock slope...
Proceedings Papers

Paper presented at the 19th U.S. Symposium on Rock Mechanics (USRMS), May 1–3, 1978
Paper Number: ARMA-78-0608
... drillstring design dissipation critical state strength data fracture Reservoir Characterization friction strain-softening rock critical state soil mechanics equation experimental data gerogiannopoulo mechanics A CRITICAL STATE YIELD CRITERION FOR STRAIN-SOFTENING ROCK by E.T. Brown, Reader...

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