Ara es mostren els items 21-40 de 103

    • An adaptive Finite Element strategy for the numerical simulation of additive manufacturing processes 

      Baiges Aznar, Joan; Chiumenti, Michele; Filho, Carlos Augusto Moreira; Cervera Ruiz, Miguel; Codina, Ramon (Elsevier, 2021-01)
      Article
      Accés obert
      In this work an adaptive Finite Element strategy to deal with the numerical simulation of Additive Manufacturing (AM) processes is presented. The Selective Laser Melting (SLM) is chosen as the reference technology because ...
    • Analysis of contact conditions and its influence on strain rate and temperature in Friction Stir Welding 

      Andrade, David; Leitão, Carlos; Dialamishabankareh, Narges; Chiumenti, Michele; Rodrigues, Dulce (2021-02)
      Article
      Accés obert
      In friction stir welding (FSW), the real contact conditions between the tool and the workpiece and the range of strain rates experienced remain quite unclear. In this work, a coupled 3D thermo-mechanical numerical model ...
    • Analysis of the effect of provisional ties on the construction and current deformation of Mallorca cathedral 

      Pelà, Luca; Bourgeois, Julien; Roca Fabregat, Pedro; Cervera Ruiz, Miguel; Chiumenti, Michele (2016-04)
      Article
      Accés restringit per política de l'editorial
      This paper presents the analysis of the structure of Mallorca Cathedral taking into account the influence on structural behaviour of auxiliary iron ties used during the construction process. Recent studies (Roca et al., ...
    • Appraisement of planar, bending and twisting cracks in 3D with isotropic and orthotropic damage models 

      Barbat Vlad, Gabriel; Cervera Ruiz, Miguel; Chiumenti, Michele (Springer, 2018-03)
      Article
      Accés obert
      This paper discusses the modeling of cracking in quasi-brittle materials using isotropic and orthotropic damage constitutive laws. A mixed strain/displacement finite element formulation is used, taking advantage of its ...
    • Architecture of a multi-crack model with full closing, reopening and sliding capabilities 

      Cervera Ruiz, Miguel; Barbat Vlad, Gabriel; Chiumenti, Michele (Springer, 2020-06)
      Article
      Accés obert
      This paper discusses the finite element modeling of cracking of quasi-brittle materials under cyclic loading. A damage based crack model is proposed, which considers tensile and compressive damage, irreversible strains ...
    • Clúster Agro@limentari: Exposició de treballs 

      Pujolà Cunill, Montserrat; Sorribas Royo, Francisco Javier; Sánchez Soto, Miguel; Chiumenti, Michele; Casas Piedrafita, Óscar; Olivella, Jorge (DEAB / EETAC / Factoria BCBL, 2011-05-19)
      Audiovisual
      Accés obert
    • Comparison of a fluid and a solid approach for the numerical simulation of friction stir welding with a non-cylindrical Pin 

      Bussetta, P.; Dialamishabankareh, Narges; Boman, Romain; Chiumenti, Michele; Agelet de Saracibar Bosch, Carlos; Cervera Ruiz, Miguel; Ponthot, J-P. (CIMNE, 2013)
      Text en actes de congrés
      Accés obert
      Friction stir welding (FSW) process is a solid-state joining process during which materials to be joined are not melted. As a consequence, the heat-affected zone is smaller and the quality of the weld is better with respect ...
    • Comparison of a fluid and a solid approach for the numerical simulation of friction stir welding with a non-cylindrical pin 

      Bussetta, Philippe; Dialamishabankareh, Narges; Boman, Romain; Chiumenti, Michele; Agelet de Saracibar Bosch, Carlos; Cervera Ruiz, Miguel; Ponthot, Jean Philippe (2013)
      Text en actes de congrés
      Accés obert
    • Computational characterization of polymeric materials 3D-printed via fused filament fabrication 

      Dialamishabankareh, Narges; Rivet Fernández, Iván; Cervera Ruiz, Miguel; Chiumenti, Michele (Taylor & Francis Group, 2022-02)
      Article
      Accés obert
      This work develops a novel homogenization-based computational strategy for predicting the mechanical properties of fused filament fabricated parts by characterizing the component according to the different printing patterns ...
    • Computational modeling of multi-pass welding and metal deposition processes 

      Chiumenti, Michele; Cervera Ruiz, Miguel; Dialami, Narges; Agelet de Saracibar Bosch, Carlos (European Scientific Association For Material Forming (ESAFORM), 2009)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      In this work a computational model for the numerical simulation of multi-pass welding and metal deposition processes is presented. A fully coupled thermo-mechanical solution, including phase-change phenomena and shrinkage ...
    • Continuum FE models for the analysis of Mallorca Cathedral 

      Roca Fabregat, Pedro; Cervera Ruiz, Miguel; Pelà, Luca; Clemente, Roberto; Chiumenti, Michele (2013)
      Article
      Accés restringit per política de l'editorial
      From the theoretical point of view, systems composed by masonry arches or vaults would require, during construction, the simultaneous activation of all structural elements in order to reach the optimum balance of thrusts. ...
    • Coupled thermo-mechanical analysis for the numerical simulation of welding processes 

      Chiumenti, Michele; Cervera Ruiz, Miguel; Agelet de Saracibar Bosch, Carlos (Centro Internacional de Métodos Numéricos en Ingeniería (CIMNE), 2009)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The aim of this paper consists of both the description of the formulation adopted for the numerical simulation of the Metal Deposition process (MD) and the experimental work carried out at ITP Industry (Industria de Turbo ...
    • Crack-free laser powder bed fusion by substrate design 

      Lu, Xufei; Zhang, Wenyou; Chiumenti, Michele; Cervera Ruiz, Miguel (Elsevier, 2022-11)
      Article
      Accés obert
      Additively manufactured components by laser powder bed fusion (LPBF) often suffer from stress-induced cracks (e.g. delamination), especially at the build-substrate interfaces where stiff mechanical constraints and large ...
    • Defect formation and material flow in Friction Stir Welding 

      Dialamishabankareh, Narges; Cervera Ruiz, Miguel; Chiumenti, Michele (2020-03)
      Article
      Accés obert
      This work addresses the issue of the simulation and prediction of defect formation through the analysis of the material mixing during Friction Stir Welding (FSW). A coupled thermomechanical model is used for the FSW ...
    • Desarrollo de un software metálico intravascular 

      Bordone, Maurizio; Soudah Prieto, Eduardo; Chiumenti, Michele; Oñate Ibáñez de Navarra, Eugenio (2008)
      Report de recerca
      Accés obert
      Las enfermedades cardiovasculares son la primera causa de muerte de la población Europea. Se estima que la mortalidad por enfermedades cardiovasculares es la mitad de la mortalidad total en toda Europa y provoca 4,35 ...
    • Effect of the tool tilt angle on the heat generation and the material flow in friction stir welding 

      Dialamishabankareh, Narges; Cervera Ruiz, Miguel; Chiumenti, Michele (Multidisciplinary Digital Publishing Institute (MDPI), 2019-01)
      Article
      Accés obert
      This work studies the effect of the tool tilt angle on the generated heat and the material flow in the work pieces joint by Friction Stir Welding (FSW). An apropos kinematic framework together with a two-stage speed-up ...
    • Effect of the tool tilt angle on the heat generation and the material flow in Friction Stir Welding 

      Dialamishabankareh, Narges; Cervera Ruiz, Miguel; Chiumenti, Michele (Multidisciplinary Digital Publishing Institute (MDPI), 2019)
      Capítol de llibre
      Accés obert
      This work studies the effect of the tool tilt angle on the generated heat and the material flow in the work pieces joint by Friction Stir Welding (FSW). An apropos kinematic framework together with a two-stage speed-up ...
    • Empirical methodology to determine inherent strains in additive manufacturing 

      Setien Ugalde, Iñaki; Chiumenti, Michele; van der Veen, Sjoerd; San Sebastian Ormazabal, Maria (2019-10)
      Article
      Accés obert
      Part distortion is a critical issue during Additive Manufacturing (AM) of metallic parts since it prevents this technology from being implemented at industrial level. To this regard, distortion prediction even from design ...
    • Enhanced friction model for Friction Stir Welding (FSW) analysis: simulation and experimental validation 

      Dialami, Narges; Chiumenti, Michele; Cervera Ruiz, Miguel; Segatori, A.; Osikowicz, W. (2017-11)
      Article
      Accés obert
      Friction is one of the main heat generation mechanisms in Friction Stir Welding (FSW). This phenomenon occurs between the pin and the workpiece as the rotating tool moves along the weld line. An accurate friction model is ...
    • Experimental validation of an FSW model with an enhanced friction law: application to a threaded cylindrical pin tool 

      Dialamishabankareh, Narges; Cervera Ruiz, Miguel; Chiumenti, Michele; Segatori, A.; Osikowicz, W. (MDPI AG, 2017-11)
      Article
      Accés obert
      This work adopts a fast and accurate two-stage computational strategy for the analysis of FSW (Friction stir welding) processes using threaded cylindrical pin tools. The coupled thermo-mechanical problem is equipped with ...