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dc.contributor.authorPouya, A.
dc.contributor.authorZhu, C.
dc.contributor.authorArson, Chloé
dc.date.accessioned2014-06-06T13:41:00Z
dc.date.available2014-06-06T13:41:00Z
dc.date.issued2014-06
dc.identifier.citationA. Pouya, C. Zhu, C. Arson. 2014. "Micro-Macro Modeling Approach for the Triggering of Viscous Fatigue Damage in Halite Polycrystals under Cyclic Loading". ARMA 14-6949, Proc. 48th US Rock Mechanics/Geomechanics Symposium.en_US
dc.identifier.urihttp://hdl.handle.net/1853/51963
dc.descriptionPresented at the 48th US Rock Mechanics/Geomechanics Symposium of the American Rock Mechanics Association (ARMA), Minneapolis, MN, 1-4 June 2014.
dc.descriptionCopyright © 2014 by the American Rock Mechanics Association
dc.description.abstractUnderground cavities in salt rock formations used for Compressed Air Energy Storage (CAES) undergo cyclic loads and are subject to a fatigue phenomenon that induces a decrease of rock’s strength and stiffness. A micromechanical analysis of this phenomenon is necessary to understand its mechanisms and elaborate relevant constitutive models. The polycrystalline nature of rock salt has a crucial effect on crack propagation and rock damage and, hence, on fatigue behavior. This behavior was investigated herein on the basis of self consistent upscaling approaches for viscous heterogeneous materials. The internal stresses in the polycrystal were modeled based on experimental data available for halite single crystals, and a monotonic compression test was simulated, which allowed tracking the triggering of fatigue damage. Results show that tensile stresses are developed in the polycrystal under global compressive load, the amplitude of which depends on the macroscopic load rate or frequency. These tensile stresses can exceed in some conditions the tensile strength of grains or of grains interfaces and cause cracking and damage in the polycrystal.en_US
dc.language.isoen_USen_US
dc.publisherGeorgia Institute of Technologyen_US
dc.subjectSalt rock formationsen_US
dc.subjectCompressed air energy storage (CAES)en_US
dc.subjectSalt cavitiesen_US
dc.subjectCyclic loadingen_US
dc.subjectThermomechanical loadingen_US
dc.subjectFatigueen_US
dc.titleMicro-Macro Modeling Approach for the Triggering of Viscous Fatigue Damage in Halite Polycrystals under Cyclic Loadingen_US
dc.typePost-printen_US
dc.typeProceedingsen_US
dc.contributor.corporatenameGeorgia Institute of Technology. School of Civil and Environmental Engineeringen_US
dc.contributor.corporatenameEcole des Ponts Paris Tech, Franceen_US
dc.embargo.termsnullen_US


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