Exploració per tema "fracture"
Ara es mostren els items 1-16 de 16
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A continuous-discontinuous model for crack branching
(John Wiley & sons, 2019-10-05)
Article
Accés obertA new continuous-discontinuous model for fracture that accounts for crack branching in a natural manner is presented. It combines a gradient-enhanced damage model based on nonlocal displacements to describe diffuse cracks ... -
A phase-field/gradient damage model for brittle fracture in elastic-plastic solids
(2015-02)
Article
Accés obertThe formulation of a phase-field continuum theory for brittle fracture in elastic-plastic solids and its computational implementation are presented in this contribution. The theory is based on a virtual-power formulation ... -
Análisis del efecto tamaño y fallo a cortante en vigas de hormigón
(Universitat Politècnica de Catalunya, 2019-05-10)
Projecte Final de Màster Oficial
Accés obert -
Aplicación del método del trabajo esencial de fractura al estudio de films de polipropileno y de copolímeros propileno-etileno en bloques
(Universitat Politècnica de Catalunya, 2001-07-06)
Tesi
Accés obertEn aquest treball, es presenta l'estudi de les propietats de fractura de films de polipropilè (PP) i copolímers etilè-propilè en blocs (EPBC) per mitjà de la tècnica del Treball Essencial de Fractura (EWF). Aquesta tècnica ... -
Computational homogenization for multiscale crack modeling: implementational and computational aspects
(John Wiley & sons, 2012-01)
Article
Accés obertA computational homogenization procedure for cohesive and adhesive crack modeling of materials with a heterogeneous microstructure has been recently presented in Computer Methods in Applied Mechanics and Engineering (2010, ... -
Continuum approach to computational multiscale modeling of propagating fracture
(2015-09)
Article
Accés obertA new approach to two-scale modeling of propagating fracture, based on computational homogenization (FE2), is presented. The specific features of the approach are: a) a continuum setting for representation of the fracture ... -
Crack-path field and strain-injection techniques in computational modeling of propagating material failure
(2014-01)
Article
Accés obertThe work presents two new numerical techniques devised for modeling propagating material failure, i.e. cracks in fracture mechanics or slip-lines in soil mechanics. The first one is termed crack-path-field technique and ... -
Experimental observations of two-phase flow in rough-walled fractures
(Universitat Politècnica de Catalunya, 2014-06-06)
Projecte/Treball Final de Carrera
Accés obertThis thesis presents an experimental investigation about the concurrent ow of water-air in a rough walled fracture. The focus of this investigation is on studying the effects of varying the orientation or gravity factor ... -
Extraction of a crack opening from a continuous approach using regularized damage models
(2008-11)
Article
Accés restringit per política de l'editorialCrack opening governs many transfer properties that play a pivotal role in durability analyses. Instead of trying to combine continuum and discrete models in computational analyses, it would be attractive to derive from ... -
Grimsel test site - Long-term cement studies.Reactive transport modeling of experiment 2 at Grimsel
(2016-04)
Report de recerca
Accés obertWithin the framework of the GTS-LCS project (Grimsel Test Site – Long-Term Cement Studies), an in-situ experiment lasting about 5 years was started in 2009 to study water-cement-rock interactions in fractured granite. A ... -
GTS_LCS, in-situ experiment 2: modeling of tracer tests 09-03
(2015-02)
Report de recerca
Accés obertWithin the framework of the GTS-LCS project (Grimsel Test Site – Long-Term Cement Studies), an in-situ experiment lasting about 5 years was started in 2009 to study water-cement-rock interactions in a fractured granite. ... -
Hydrofluoric acid etching of dental zirconia. Part 2: effect on flexural strength and ageing behavior
(Elsevier, 2016-01-01)
Article
Accés obertAmong the diverse treatments proposed to promote the osseointegration of zirconia dental implants, hydrofluoric acid (HF) etching appears to be a good candidate. However little is known on the effect of this process on the ... -
Micropillar compression inside zirconia degraded layer
(Elsevier, 2015-11-01)
Article
Accés obertIn the dental field, Yttria-doped Tetragonal Polycrystalline Zirconia (Y-TZP) plays an important role due to its high mechanical properties, good aesthetics and bio-inert behavior. Surface mechanical properties are crucial ... -
Numerical analysis of desiccation, shrinkage and cracking in low plasticity clayey soils
(2017)
Comunicació de congrés
Accés obertThis paper presents a numerical study of the desiccation processes of low-plasticity clayey soils that usually result in shrinkage and often in cracking. For the theoretical development of the numerical model, concepts of ... -
Phase-field modeling and simulation of fracture in brittle materials with strongly anisotropic surface energy
(John Wiley & Sons, 2015-04-20)
Article
Accés obertCrack propagation in brittle materials with anisotropic surface energy is important in applications involving single crystals, extruded polymers, or geological and organic materials. Furthermore, when this anisotropy is ... -
Strain localization and failure mechanics for elastoplastic damage solids
(Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE), 2014)
Llibre
Accés restringit per política de l'editorialThis work investigates systematically strain localization and failure mechanics for elastoplastic damage solids. Two complementary methodologies, i.e., traction-based discontinuities localized in an elastic solid and strain ...