Ara es mostren els items 1-19 de 19

    • A generalized finite-strain damage model for quasi-incompressible hyperelasticity using hybrid formulation 

      Comellas Sanfeliu, Ester; Bellomo, Facundo J.; Oller Martínez, Sergio Horacio (2016-03)
      Article
      Accés obert
      A new generalized damage model for quasi-incompressible hyperelasticity in a total Lagrangian finite-strain framework is presented. A Kachanov-like reduction factor (1 - D) is applied on the deviatoric part of the hyperelastic ...
    • A homeostatic-driven turnover remodelling constitutive model for healing in soft tissues 

      Comellas Sanfeliu, Ester; Gasser, Thomas Christian; Bellomo, Facundo J.; Oller Martínez, Sergio Horacio (2016-03)
      Article
      Accés obert
      Remodelling of soft biological tissue is characterized by interacting biochemical and biomechanical events, which change the tissue's microstructure, and, consequently, its macroscopic mechanical properties. Remodelling ...
    • Análisis del efecto tamaño y fallo a cortante en vigas de hormigón 

      Espinoza Durán, Eduardo (Universitat Politècnica de Catalunya, 2019-05-10)
      Projecte Final de Màster Oficial
      Accés obert
    • Applications of GPR in association with other non-destructive testing methods in surveying of transport infrastructures 

      Solla Carracelas, Mercedes; Lorenzo, Henrique; Martínez-Sánchez, Joaquin; Pérez Gracia, María de la Vega (Springer, 2015-01-01)
      Capítol de llibre
      Accés restringit per política de l'editorial
    • Bridge condition and safety based on measured vibration level 

      Casas Rius, Joan Ramon; Rodrigues, J. Fernando (International Association for Bridge and Structural Engineers (IABSE), 2015)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Along the years, there were efforts by researchers in quantifying structural performance and damage in function of vibration measurements. Curves proposed by several authors try to relate acceleration spectrum to damage ...
    • Effect of of ageing and temperature on the fatigue behaviour of bitumens 

      Miró Recasens, José Rodrigo; Martínez Reguero, Adriana Haydée; Moreno Navarro, Fernando; Rubio Gámez, María del Carmen (2015-12)
      Article
      Accés obert
      Bitumen ageing plays a significant role in determining the resistance of asphalt mixes to fatigue cracking. Regardless of the type of ageing (oxidation during manufacture or during the service life), hardening effects ...
    • Escala de gravedad de daños en edificios: de la asignación directa a la contrastación estadística 

      Ruiz Gorrindo, Félix; Aguado de Cea, Antonio; Serrat Piè, Carles; Casas Rius, Joan Ramon (2018-09)
      Article
      Accés obert
      Está firmemente demostrada la importancia de realizar mantenimiento preventivo en los edificios, para evitar que se degraden y aparezcan lesiones graves. También está demostrado que con el mantenimiento preventivo se ahorra ...
    • Geometry of nanoindentation cube-corner cracks observed by FIB tomography: Implication for fracture resistance estimation 

      Cuadrado Lafoz, Nuria; Seuba, J.; Casellas Padró, Daniel; Anglada, M.; Jiménez Piqué, Emilio (Elsevier, 2015-09-01)
      Article
      Accés obert
      When indenting a brittle material with a sharp indenter, cracks can be generated at the corners of the imprint. From the length of these cracks, the fracture resistance can be estimated. This technique is simple and allows ...
    • Heave of a building on Keuper anhydritic formation 

      Ramon Tarragona, Anna; Alonso Pérez de Agreda, Eduardo (International Society for Soil Mechanics and Geotechnical Engineering (ISSMGE), 2017)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The development of fissures in a building placed at the site of an ancient quarry excavated in a Keuper formation motivated a detailed in-situ investigation of the foundation material. Severe fissures and cracks were present ...
    • Irreversible entropy model for damage diagnosis in resistors 

      Cuadras Tomàs, Àngel; Crisóstomo, Javier; Ovejas Benedicto, Victòria Júlia; Quílez Figuerola, Marcos (American Institute of Physics (AIP), 2015-10-28)
      Article
      Accés obert
      We propose a method to characterize electrical resistor damage based on entropy measurements. Irreversible entropy and the rate at which it is generated are more convenient parameters than resistance for describing damage ...
    • Management and safety of existing concrete structures via optical fiber distributed sensing 

      Casas Rius, Joan Ramon; Villalba Herrero, Sergi; Villalba Herrero, Vicenç (CRC Press Taylor & Francis Group, 2014)
      Capítol de llibre
      Accés restringit per política de l'editorial
      The use of Optical Backscatter Reflectometer (OBR) as a distributed fiber optic system to measure strain and detect cracking in concrete structures is investigated. A laboratory experience in a concrete slab is first ...
    • Modelling fluid flow in opalinus clay excavation damage zone: a semi-analytical approach 

      Alcoverro Bassols, Jordi; Olivella Pastallé, Sebastià; Alonso Pérez de Agreda, Eduardo (2014-12)
      Article
      Accés restringit per política de l'editorial
      The HG-A in situ test, located at the Mont Terri Underground Rock Laboratory (URL), was analysed as part of the FORGE project. This test investigated the behaviour of the excavation damage zone (EDZ) around a backfilled ...
    • Numerical homogenization for composite materials analysis: comparison with other micro mechanical formulations 

      Otero Gruer, Fermín Enrique; Oller Martínez, Sergio Horacio; Martínez García, Javier; Salomón, Ramón Omar (2015-04)
      Article
      Accés obert
      This work presents a two-scale homogenization procedure to analyze three dimension composite structures by FEM. The theory implemented is compared with other micro-structural formulations: micro models and serial parallel ...
    • Numerical simulation of failure involving multiple cracks with smoothed displacements. 

      Olm Serra, Marc (Universitat Politècnica de Catalunya, 2013-05-13)
      Tesina
      Accés obert
      To numerically simulate a failure process, damage models can be used. In order to avoid mesh dependency problems of local damage models, nonlocal models are employed. The use of nonlocal displacements is an efficient ...
    • Reduced kinematic formulation based on the strong discontinuity method for reinforced concrete components 

      Kishta, E.; Richard, B.; Giry, C.; Ragueneau, F. (CIMNE, 2015)
      Text en actes de congrés
      Accés obert
      Damage models, developed in the last decades, insure a continuous description of the fracture process zone in quasi-brittle materials but fail at representing fine information of the cracking features such as openings and ...
    • Simplified and numerical structural analysis of existing masonry railway arch bridges 

      Ware, Carmen (Universitat Politècnica de Catalunya, 2023-05-25)
      Projecte Final de Màster Oficial
      Accés obert
      Com a part d'un projecte més ampli amb el Ministeri d'Innovació i Ciència espanyol i l'Agència Estatal de Recerca per anticipar la propagació de fallada dels ponts envellits, es presenta una avaluació i anàlisi estructural ...
    • 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 ...
    • Structural system identification of cable-stayed bridges with observability techniques 

      Lozano Galant, José Antonio; Nogal Macho, María; Payá Zaforteza, Ignacio Javier; Turmo Coderque, José (2014)
      Article
      Accés restringit per política de l'editorial
      Cable-stayed bridges are highly statically redundant, light and flexible structures. This complexity highlights the role of the structural system identification (SSI) method in the calibration of the actual properties of ...
    • Tunnel assessment with borehole radar 

      Pérez Gracia, María de la Vega; Caselles Magallón, Josep Oriol; Clapés Boixader, Jaime; Canas Torres, José Antonio (2017)
      Comunicació de congrés
      Accés obert
      The collapse of a tunnel and the damage in a second tunnel during the construction works, forced to the assessment of the ground in the front tunnel of the second structure, in order to avoid additional problems. The first ...