Exploració per tema "fracture"

Ara es mostren els items 5-16 de 16

    • Computational homogenization for multiscale crack modeling: implementational and computational aspects 

      Nguyen, Vinh Phu; Lloberas Valls, Oriol; Sluys, Lambertus J.; Stroeven, Martijn (John Wiley & sons, 2012-01)
      Article
      Accés obert
      A 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 

      Oliver Olivella, Xavier; Caicedo Silva, Manuel Alejandro; Roubin, Emmanuel; Huespe, Alfredo Edmundo; Hernández Ortega, Joaquín Alberto (2015-09)
      Article
      Accés obert
      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
      Accés obert
      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)
      Projecte/Treball Final de Carrera
      Accés obert
      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
      Accés restringit per política de l'editorial
      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)
      Report de recerca
      Accés obert
      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)
      Report de recerca
      Accés obert
      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; Anglada Gomila, Marcos Juan (Elsevier, 2016-01-01)
      Article
      Accés obert
      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
      Accés obert
      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 ...

    • Numerical analysis of desiccation, shrinkage and cracking in low plasticity clayey soils 

      Levatti, Hector Ulises; Prat Catalán, Pere; Ledesma Villalba, Alberto (2017)
      Comunicació de congrés
      Accés obert
      This 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 

      Li, Bin; Peco, Christian; Millán, Daniel; Arias Vicente, Irene; Arroyo Balaguer, Marino (John Wiley & Sons, 2015-04-20)
      Article
      Accés obert
      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)
      Llibre
      Accés restringit per política de l'editorial
      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 ...