A cross-anisotropic elastoplastic model applied to sedimentary rocks.

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dc.contributor.authorGaona, John Harry Forero
dc.contributor.authorGomes, Guilherme José Cunha
dc.contributor.authorVargas Júnior, Eurípedes do Amaral
dc.contributor.authorFalcão, Flávia de Oliveira Lima
dc.contributor.authorVelloso, Raquel Quadros
dc.date.accessioned2022-09-16T17:07:05Z
dc.date.available2022-09-16T17:07:05Z
dc.date.issued2020pt_BR
dc.description.abstractStrength and deformability properties of sedimentary rocks are difficult to characterize as these geomaterials show anisotropic mechanical behavior, which cannot be adequately evaluated by an isotropic constitutive model. This essay proposes a cross-anisotropic elastoplastic model to evaluate stress–strain relationships of sedimentary rocks. The approach couples the twelve-parameter Lade–Kim isotropic model with a non-uniform scaling of the stress tensor and includes two scaling parameters that link the orientation of the bedding planes with the loading direction. The anisotropic model parameters can be conveniently determined using Bayesian analysis. We illustrate our method using triaxial tests on a variety of confining stresses and bedding plane orientations for a travertine and a Tournemire shale. Our results demonstrate that the predicted maximum deviatoric stresses and the simulated stress–strain curves are shown to be in good agreement with the measured data.pt_BR
dc.identifier.citationGAONA, J. H. F. et al. A cross-anisotropic elastoplastic model applied to sedimentary rocks. International Journal of Rock Mechanics & Mining Sciences, v. 132, 2020. Disponível em: <https://www.sciencedirect.com/science/article/pii/S1365160920303270>. Acesso em: 29 abr. 2022.pt_BR
dc.identifier.doihttps://doi.org/10.1016/j.ijrmms.2020.104419pt_BR
dc.identifier.issn1365-1609
dc.identifier.urihttp://www.repositorio.ufop.br/jspui/handle/123456789/15321
dc.identifier.uri2https://www.sciencedirect.com/science/article/pii/S1365160920303270pt_BR
dc.language.isoen_USpt_BR
dc.rightsrestritopt_BR
dc.subjectConstitutive relationspt_BR
dc.subjectCross-anisotropic modelspt_BR
dc.subjectTriaxial testspt_BR
dc.subjectInverse analysispt_BR
dc.titleA cross-anisotropic elastoplastic model applied to sedimentary rocks.pt_BR
dc.typeArtigo publicado em periodicopt_BR
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