Now showing items 1-20 of 2284

    • 2D adaptive FEM simulation of failures in high-speed impacts 

      Issa, M.; Saanouni, K.; Labergère, C.; Rassineux, A. (CIMNE, 2011)
      Conference report
      Open Access
      The simulation of high-speed impacts needs the use of advanced constitutive equations required for the accurate prediction of the different thermomechanical fields and their mutual interactions (temperature, large strains, ...
    • 2D velocity-vorticity viscous incompressible flows 

      Téllez, Raúl; Acevedo, Habersheel; Nicolás, Alfredo (CIMNE, 2013)
      Conference report
      Open Access
      The 2D unsteady Navier-Stokes equations in its velocity-vorticity formulation, after time discretization, leads to a nonlinear elliptic system which may be solved by iterative methods; however, decoupling ...
    • 3D analysis of H-M coupled problem with zero-thickness interface elements applied to geomechanics 

      Garolera Vinent, Daniel; Segura Serra, Josep Maria; Carol, Ignacio; Lakashmikhanta, Ramasesha; Alvarellos, J. (CIMNE, 2015)
      Conference lecture
      Open Access
      In spite of the significant developments seen in recent years,numerical modelin of Hydraulic Fracturing still poses major challenges due to the strong coupling between fluid flow and crack development,which is itself a ...
    • 3D bite modeling and feeding mechanics of the largest living amphibian, the Chinese Giant Salamander Andrias davidianus (Amphibia:Urodela) 

      Fortuny Terricabras, Josep; Marcé Nogué, Jordi; Heiss, Egon; Sánchez Romero, Montserrat; Gil Espert, Lluís; Galobart, Àngel (2015-04-08)
      Article
      Open Access
      Biting is an integral feature of the feeding mechanism for aquatic and terrestrial salamanders to capture, fix or immobilize elusive or struggling prey. However, little information is available on how it works and the ...
    • 3D computacional mechanics elucidate the evolutionary implications of orbit position and size diversity of early amphibians 

      Marcé Nogué, Jordi; Fortuny Terricabras, Josep; Sánchez Romero, Montserrat; Esteban Trivigno, Soledad de; Gil Espert, Lluís; Galobart, Àngel (2015-06-24)
      Article
      Open Access
      For the first time in vertebrate palaeontology, the potential of joining Finite Element Analysis (FEA) and Parametrical Analysis (PA) is used to shed new light on two different cranial parameters from the orbits to evaluate ...
    • 3d conservative coupling method between a compressible fluid flow and a deformable structure 

      Puscas, Maria Adela; Daru, Virginie; Ern, Alexandre; Mariotti, Christian; Monasse, Laurent; Tenaud, Christian (CIMNE, 2013)
      Conference report
      Open Access
      In this work, we present a conservative method for three-dimensional inviscid fluid-structure interaction problems. On the fluid side, we consider an inviscid Euler fluid in conservative form. The Finite Volume method ...
    • 3D discrete element modeling of concrete: study of the rolling resistance effects on the macroscopic constitutive behavior 

      Omar, A.; Marin, P.; Potapov, S.; Daudeville, L. (CIMNE, 2013)
      Conference report
      Open Access
      The Discrete Element Method (DEM) is appropriate for modeling granular materials [14] but also cohesive materials as concrete when submitted to a severe loading such an impact leading to fractures or fragmentation in the ...
    • 3D FEM model of ground deformation in Deception Island (Antarctica) 

      Garrido Ballart, Sònia (Universitat Politècnica de Catalunya, 2017-06-16)
      Master thesis
      Open Access
      Covenantee:   Institut de Ciències de la Terra Jaume Almera
      Ground deformation has been demonstrated to be one of the most common signals of volcanic unrest. A variety of processes can cause ground deformation in active volcanic areas (e.g. magmatic processes, pore pressure ...
    • 3D finite element simulations of reinforced concrete elements exposed to fire 

      Lale, Erol; Ceccato, Ciara (CIMNE, 2017)
      Conference report
      Open Access
      Fire could dramatically reduce strength of reinforced concrete elements and it is considered one of the major threats for the structural safety of buildings: structural members may even collapse due to intensity and duration ...
    • 3D laser scanning technique coupled with DEM GPU simulations for railway ballasts 

      Pizette, Patrick; Govender, Nicolin; Wilke, Daniel N.; Gobe, Benjamin; Abriak, Nor-Edine; Rajamani, Raj K. (CIMNE, 2017)
      Conference report
      Open Access
      Spheres with complex contact models or clumped sphere models are classically used to model ballast for railway applications with the Discrete Element Method (DEM). These simplifications omits the angularity of the actual ...
    • 3D modeling of damage growth and ductile crack propagation using adaptive fem technique 

      Moslemi, Hamid; Khoei, Amir R. (CIMNE, 2011)
      Conference report
      Open Access
      In this paper, the continuum damage mechanics model originally proposed by Lemaitre [1] is presented through an adaptive finite element method for three-dimensional ductile materials. The macro-crack initiation–propagation ...
    • 3D modeling of the vane test on a power-law cement paste by means of the proper generalized decomposition 

      Ghnatios, Chady; Zehil, Gerard-Philippe (CIMNE, 2017)
      Conference report
      Open Access
      The effective modeling of the flow of fresh concrete materials in settings such as that of the vane test is a challenging process that is the object of ongoing research. Previous works modeled concrete and cement pastes as ...
    • 3D Modelling of an EPB Tunnel Drive in Mixed Geological Formation 

      Perez Pereira, Thiago (Universitat Politècnica de Catalunya, 2019-06-12)
      Master thesis
      Open Access
      Se simulará, mediante un modelo numérico 3D de elementos finitos, el proceso de excavación y construcción del túnel de la Línea 9 del Metro de Barcelona en el entorno de la zona Franca. Se validará el modelo, reproduciendo ...
    • 3D modelling of geomaterials accounting for an unconventional plasticity approach 

      Salomoni, Valentina A.; Fincato, Riccardo (CIMNE, 2011)
      Conference report
      Open Access
      The coupled hydro-mechanical state in geomaterials undergoing plasticity phenomena is here evaluated by means of the subloading surface model . The most important feature of this theory is the abolition of the distinction ...
    • 3D modelling of material flow in friction stir welding using movable cellular automaton method 

      Smolin, Alexei Yu.; Eremina, Galina M.; Psakhie, Sergey G. (CIMNE, 2017)
      Conference report
      Open Access
      The paper is devoted to the theoretical investigation of the peculiarities of material flow taking place in friction stir welding (FSW). The investigation was based on 3D computer simulation by the movable cellular automaton ...
    • 3D modelling of the elasto-plastic behaviour of adhesively bonded joints suited for a wide range of tensile-shear loads 

      Maurice, Julien; Cognard, Jean-Yves; Creac'hcadec, Romain; Sohier, Laurent; Davies, Peter; Meirinhos, Georges; Mahdi, Stéphane (CIMNE, 2011)
      Conference report
      Open Access
      Airframe developments use composite components extensively; bonding, as a rivetless assembly solution, is thus gaining in importance, leading to the need for accurate characterization of adhesive behaviour and the development ...
    • 3D numerical approximation of relativistic particle beams by asymptotic expansion 

      Assous, Franck; Le Blanc, Anne (CIMNE, 2015)
      Conference report
      Open Access
      We consider the numerical approximation and simulation of a particle beam, usually modeled by the Vlasov-Maxwell system. Our work will deal with a 3D paraxial approximate model, derived from asymptotic expansions. It ...
    • 3d numerical model of a confined fracture tests in concrete 

      Montenegro, O.; Sfer, D.; López Garello, Carlos María; Carol, Ignacio (CIMNE, 2013)
      Conference report
      Open Access
      The paper deals with the numerical simulation of a confined fracture test in concrete. The test is part of the experimental work carried out at ETSECCPB-UPC in order to elucidate the existence of a second mode of fracture ...
    • 3D phase-field for pressurized fracture propagation in heterogeneous media 

      Wick, Thomas; Lee, Sanghyun; Wheeler, Mary F. (CIMNE, 2015)
      Conference report
      Open Access
      This work presents recent progress in phase-field-based fracture modeling in heterogeneous porous media. Existing algorithms that have been developed in the last years are extended to tackle three-dimensional configurations. ...
    • 3D simulation of the glioblastoma growth in microfluidic devices 

      Claramunt Serra, Jordi (Universitat Politècnica de Catalunya, 2023-07-11)
      Bachelor thesis
      Open Access
      La modelització in silico és un procediment innovador que ha emergit recentment per donar suport en moltes àrees biològiques, aprofitant les capacitats computacionals avançades de la tecnologia actual. En general, consisteix ...