Now showing items 1-11 of 11

  • A phase-field/gradient damage model for brittle fracture in elastic-plastic solids 

    Duda, Fernando P.; Ciarbonetti, A.; Sánchez, P.J.; Huespe, Alfredo Edmundo (2015-02)
    Article
    Open Access
    The 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 ...
  • Continuum approach to computational multiscale modeling of propagating fracture 

    Oliver Olivella, Xavier; Caicedo Silva, Manuel Alejandro; Roubin, Emmanuel; Huespe, Alfredo Edmundo; Hernández Ortega, Joaquín Alberto (2015-09)
    Article
    Open Access
    A 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 

    Oliver Olivella, Xavier; Dias, I.F.; Huespe, Alfredo Edmundo (2014-01)
    Article
    Open Access
    The 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 

    Salvador Roda, Clara (Universitat Politècnica de Catalunya, 2014-06-06)
    Master thesis (pre-Bologna period)
    Open Access
    This 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 

    Dufour, F.; Pijaudier-Cabot, Gilles; Choinska, M; Huerta, Antonio (2008-11)
    Article
    Restricted access - publisher's policy
    Crack 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 

    Saaltink, Maarten Willem; Soler Matamala, Josep M. (2016-04)
    External research report
    Open Access
    Within 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 

    Manette Forti, Maria Manuela; Saaltink, Maarten Willem; Soler Matamala, Josep M. (2015-02)
    External research report
    Open Access
    Within 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 

    Flamant, Quentin Jean Alain; Anglada Gomila, Marcos Juan (Elsevier, 2016-01-01)
    Article
    Restricted access - publisher's policy
    Among 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 

    Camposilvan, Erik; Anglada Gomila, Marcos Juan (Elsevier, 2015-11-01)
    Article
    Restricted access - publisher's policy
    In 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 ...
  • Phase-field modeling and simulation of fracture in brittle materials with strongly anisotropic surface energy 

    Li, Bin; Peco, Christian; Millán, Daniel; Arias Vicente, Irene; Arroyo Balaguer, Marino (John Wiley & Sons, 2015-04-20)
    Article
    Open Access
    Crack 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 

    Wu, Jian-Ying; Cervera Ruiz, Miguel (Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE), 2014)
    Book
    Restricted access - publisher's policy
    This 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 ...