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dc.contributor.authorWencheng, Jin
dc.contributor.authorArson, Chloé
dc.date.accessioned2017-05-17T19:59:55Z
dc.date.available2017-05-17T19:59:55Z
dc.date.issued2017-06
dc.identifier.citationW. Jin & C. Arson (2017). Non-Local Micromechanical Anisotropic Damage Modeling Of Quasi-Brittle Materials: Formulation And Implementation. 51st US Rock Mechanics/Geomechanics Symposium of the American Rock Mechanics Association, San Francisco, CA, June 25-28 2017, Paper 17-0111.en_US
dc.identifier.urihttp://hdl.handle.net/1853/58104
dc.descriptionCopyright © 2017 by the American Rock Mechanics Association.en_US
dc.descriptionARMA 17-0111en_US
dc.description.abstractA nonlocal anisotropic damage model is proposed for quasi-brittle materials, such as concrete and rock. The local anisotropic damage model is formulated by combining a free energy derived from micromechanics with phenomenological yield criteria and damage potentials. The trace of the total strain is used to distinguish tensile and compressive loading paths, and to account for the influence of the confining pressure on the propagation of compression cracks. Yield criteria in tension and compression are expressed in terms of equivalent strains, which depend on the difference between principal strain components. A non-local measure of strain is used to avoid localization. Constitutive parameters are calibrated against published experimental data for concrete and shale. Simulations of three-point bending tests show that non-local enhancement is necessary and efficient to avoid mesh dependency upon strain softening. Simulations of borehole excavation damage zone show that the damage model is not mesh dependent upon stress hardening. Numerical predictions are in agreement with experimental observations and the model can capture unilateral effects, tensile softening, compressive hardening and confinement dependent compressive behavior.en_US
dc.language.isoen_USen_US
dc.publisherGeorgia Institute of Technologyen_US
dc.subjectCompressionen_US
dc.subjectStrain componentsen_US
dc.subjectTensionen_US
dc.titleNon-Local Micromechanical Anisotropic Damage Modeling Of Quasi-Brittle Materials: Formulation And Implementationen_US
dc.typePost-printen_US
dc.typeProceedingsen_US
dc.contributor.corporatenameGeorgia Institute of Technology. School of Civil and Environmental Engineeringen_US


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