Now showing items 1-7 of 7

  • Effect of aging on the fracture characteristics and brittleness of a high-strength concrete 

    Gettu, Ravindra; García Álvarez, Víctor Óscar; Aguado de Cea, Antonio (Elsevier, 1998)
    Article
    Open Access
    Results of notched beam (fracture) tests on a 60 MPa silica fume concrete at the ages of 4, 10, 31 and 232 days are presented. Fracture parameters at the different ages were obtained using the size effect and cohesive ...
  • Hydraulic fracture and toughening of a brittle layer bonded to a hydrogel 

    Lucantonio, Alessandro; Noselli, Giovanni; Trepat Guixer, Xavier; Arroyo Balaguer, Marino; DeSimone, Antonio (2015-10-28)
    Article
    Open Access
    Brittle materials propagate opening cracks under tension. When stress increases beyond a critical magnitude, then quasistatic crack propagation becomes unstable. In the presence of several precracks, a brittle material ...
  • Internal progressive failure in deep-seated landslides 

    Yerro, Alba; Pinyol Puigmartí, Núria Mercè; Alonso Pérez de Agreda, Eduardo (2015-11)
    Article
    Open Access
    Except for simple sliding motions, the stability of a slope does not depend only on the resistance of the basal failure surface. It is affected by the internal distortion of the moving mass, which plays an important role ...
  • On the existence of representative volumes for softening quasi-brittle materials: a failure zone averaging scheme 

    Nguyen, Vinh Phu; Lloberas Valls, Oriol; Stroeven, Martijn; Sluys, Lambertus J. (2010-11)
    Article
    Open Access
    The concept of the representative volume element (RVE) for softening materials is revised in this contribution. It is demonstrated by means of numerical simulations that there exists a sample which is statistically ...
  • Run-out of landslides in brittle soils 

    Yerro Colom, Alba; Alonso Pérez de Agreda, Eduardo; Pinyol Puigmartí, Núria Mercè (2016-03)
    Article
    Open Access
    One of the factors causing the acceleration of landslides is the loss of strength of the soil involved in the potential unstable mechanism. The travelled distance and the landslide velocity, a key factor in risk analysis, ...
  • Simulação do comportamento não linear de materiais quase-frágeis via elementos finitos com fissura embebida 

    Manzoli, Osvaldo L.; Rodrigues, Eduardo A.; Gamino, Andre L. (Universitat Politècnica de Catalunya. CIMNE, 2011)
    Article
    Open Access
    A combined constitutive model based on the Continuum Damage Mechanics is presented to represent the nonlinear behavior of quasi-brittle materials, which present different response when subjected to tension or compression. ...
  • Theoretical and experimental investigation on inclined ultrasonic elliptical vibration cutting of alumina ceramics 

    Zhu, Wu-Le; He, Yu; Ehmann, Kornel; Sánchez Egea, Antonio José; Wang, Xinwei; Ju, Bing-Feng; Zhu, Zhiwei (2016-05-05)
    Article
    Restricted access - publisher's policy
    Alumina (Al2O3) is an extremely hard and brittle ceramic that is usually used as an abrasive or a cutting tool insert in manufacturing. However, its growing applications in industrial products make it necessary to conduct ...