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dc.contributor.authorLiaudat, Joaquín
dc.contributor.authorGarolera Vinent, Daniel
dc.contributor.authorMartínez Benasat, Antonio
dc.contributor.authorCarol, Ignacio
dc.contributor.authorLakashmikhanta, Ramasesha
dc.contributor.authorAlvarellos, J.
dc.date.accessioned2016-01-11T16:27:32Z
dc.date.available2016-01-11T16:27:32Z
dc.date.issued2015
dc.identifier.citationLiaudat, Joaquín [et al.]. Numerical modelling of the wedge splitting test in rock specimens, using fracture-based zero-thickness interface elements. A: COMPLAS XIII. "COMPLAS XIII : proceedings of the XIII International Conference on Computational Plasticity : fundamentals and applications". CIMNE ed. Barcelona: CIMNE, 2015, p. 974-981.
dc.identifier.isbn978-84-944244-6-5
dc.identifier.urihttp://hdl.handle.net/2117/81239
dc.description.abstractThe purpose of the Wedge Splitting Test (WST) is to generate stable mode I fracture crack along a pre-established path, and be able to measure the specific fracture energy parameter of the material GFI. The test is performed on standard cylindrical notched specimens. In order to make decision on the optimal notch geometry for a specific rock test, a number of WST experiments were simulated numerically via FEM. Continuum elements with isotropic elastic behavior were used to represent the rock, the steel loading plates and an “equivalent spring” to the testing machine compliance. The notch and the fracture path on the rock were represented via zero-thickness interface elements. The notch elements were assumed linear elastic with very low elastic stiffness parameters Kn and Kt, so that they do not oppose any significant resistance to opening. The constitutive model used for the interface elements along the fracture path was the elastoplastic constitutive formulation with fracture energy-based evolution laws. The model results match very realistically the curves obtained in the experimental WST, allowing us to estimate indirectly, not only the specific fracture energy but also other basic mechanical parameters of the rock, such as the elastic modulus and the tensile strength.
dc.format.extent8 p.
dc.language.isoeng
dc.publisherCIMNE
dc.subjectÀrees temàtiques de la UPC::Matemàtiques i estadística::Anàlisi numèrica::Mètodes en elements finits
dc.subjectÀrees temàtiques de la UPC::Enginyeria civil::Geotècnia::Mecànica de roques
dc.subject.lcshFinite element method
dc.subject.lcshRock mechanics
dc.subject.lcshFracture tests
dc.subject.otherRock
dc.subject.otherWST
dc.subject.otherFracture mechanics
dc.subject.otherFEM
dc.subject.otherInterface elements
dc.titleNumerical modelling of the wedge splitting test in rock specimens, using fracture-based zero-thickness interface elements
dc.typeConference lecture
dc.subject.lemacElements finits, Mètode dels
dc.subject.lemacMecànica de roques
dc.subject.lemacMecànica de fractura
dc.rights.accessOpen Access
local.identifier.drac17512146
local.citation.contributorCOMPLAS XIII
local.citation.pubplaceBarcelona
local.citation.publicationNameCOMPLAS XIII : proceedings of the XIII International Conference on Computational Plasticity : fundamentals and applications
local.citation.startingPage974
local.citation.endingPage981
local.citation.editionCIMNE


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