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A new Hoek-Brown-Matsuoka-Nakai failure criterion for rocks

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Resumo:In the current paper, we propose a new three-dimensional strength criterion for rocks expressed in terms of the first principal stress invariant, I1, and the second and third invariants of the deviatoric stress tensor, J2 and J3. The design of this constitutive model conjugates the characteristics of two of the most well-known and widely used criteria in geotechnical engineering: Hoek-Brown and Matsuoka-Nakai. Its material parameters can be calibrated based on conventional axisymmetric compression and extension tests. Experimental polyaxial test data from a dozen different rock types were used to validate the current criterion.
Autores principais:Vicente da Silva, M.
Outros Autores:Antão, A. N.
Assunto:Hoek-Brown criterion Matsuoka-Nakai criterion Rock strength Three-dimensional failure Geotechnical Engineering and Engineering Geology
Ano:2023
País:Portugal
Tipo de documento:artigo
Tipo de acesso:acesso aberto
Instituição associada:Universidade Nova de Lisboa
Idioma:inglês
Origem:Repositório Institucional da UNL

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