Exploració per autor "Cervera Ruiz, Miguel"Més informacióMés informació

Ara es mostren els items 41-60 de 138

    • 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 ...

    • Construction process numerical simulation and seismic assessment of Mallorca Cathedral 

      Roca Fabregat, Pedro; Pelà, Luca; Cervera Ruiz, Miguel; Clemente, Roberto (IB2MaC, 2012)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This paper presents a numerical study of Mallorca Cathedral carried out by means of a FE approach devised for the study of this complex historical construction. Previous studies, including inspection and historical research, ...

    • 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. ...

    • Continuum model for inelastic behaviour of masonry 

      Pelà, Luca; Cervera Ruiz, Miguel; Roca Fabregat, Pedro (2011)
      Text en actes de congrés
      Accés obert
      A continuum model capable of modelling the inelastic behaviour of masonry is presented. The model includes the description of viscoelasticity, orthotropic damage and tensile crack localization. The theoretical framework ...

    • 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 ...

    • Cracking of quasi-brittle structures under monotonic and cyclic loadings: a d+/d- damage model with stiffness recovery in shear 

      Cervera Ruiz, Miguel; Tesei, Claudia; Ventura, Giulio (2018-03)
      Article
      Accés obert
      In the present paper, a new d+/d- damage model apt for quasi-brittle materials is described and its validation is carried out considering unreinforced concrete, reinforced concrete and masonry elements.Two independent ...

    • 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 herramientas de autoaprendizaje multimedia para cálculo de estructuras por ordenador en ingeniería 

      García Espinosa, Julio; Martínez, Javier; Yebra, Daniel; Cervera Ruiz, Miguel; Oñate Ibáñez de Navarra, Eugenio; Oller, Sergio; Suárez, Benjamín (Universitat Politècnica de Catalunya. Institut de Ciències de l'Educació, 2013-02-08)
      Text en actes de congrés / Comunicació de congrés
      Accés obert
      En este proyecto se han desarrollado herramientas multimedia de autoaprendizaje para cálculo de estructuras por el método de los elementos finitos (MEF). Estas herramientas permitirán mejorar la formación de los ...

    • Effect of pier-spandrel geometry on the in-plane response of masonry structures 

      Saloustros, Savvas; Pelà, Luca; Cervera Ruiz, Miguel; Roca Fabregat, Pedro; D'Ayala, Dina (Taylor & Francis, 2016)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This paper presents a numerical study on the effect of the relative geometry between piers and spandrels in the structural response of regular masonry frames against horizontal loading. A sensitivity analysis is carried ...

    • 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 ...

    • Elementos finitos mixtos estabilizados para flujos confinados de Bingham y de Herschel-Bulkley Parte II: soluciones numéricas 

      Moreno, Elvira; Cervera Ruiz, Miguel (Universitat Politècnica de Catalunya. CIMNE, 2016)
      Article
      Accés obert
      Este trabajo trata el modelado numérico de los fluidos viscoplásticos de Bingham y de Herschel-Bulkley por medio del método de los elementos finitos mixtos estabilizados velocidad/presión. Se usa el modelo viscoplásticos ...

    • Elementos finitos mixtos estabilizados para flujos confinados de Bingham y de Herschel-Bulkley. Parte I: Formulación 

      Moreno, Elvira; Cervera Ruiz, Miguel (Universitat Politècnica de Catalunya. CIMNE, 2016-04)
      Article
      Accés obert
      This work presents a methodology for the solution of the Navier-Stokes equations for Bingham and Herschel-Bulkley viscoplastic fluids using stabilized mixed velocity/pressure finite elements. The theoretical formulation ...

    • 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 ...

    • Evaluación de la presión de fallo del edificio de contención de una central nuclear tipo PWR-W tres lazos. Parte 1: Metodología 

      Barbat Barbat, Horia Alejandro; Cervera Ruiz, Miguel; Oñate Ibáñez de Navarra, Eugenio; Hanganu, Dan Alexandru; Cirauqui, Cruz (Centro Internacional de Métodos Numéricos en Ingeniería, 1995)
      Article
      Accés obert
      Se presenta en este artículo la metodología seguida para la evaluación de la presión de fallo del edificio de contención de una central nuclear PWR-W tres lazos. El análisis debe ser totalmente tridimensional para permitir ...

    • Evaluación de la presión de fallo del edificio de contención de una central nuclear tipo PWR-W tres lazos. Parte II: Simulación numérica 

      Cervera Ruiz, Miguel; Barbat Barbat, Horia Alejandro; Cirauqui, Cruz; Hanganu, Dan Alexandru; Oñate Ibáñez de Navarra, Eugenio (Centro Internacional de Métodos Numéricos en Ingeniería, 1995)
      Article
      Accés obert
      En este articulo se presentan los resultados de la simulación numérica efectuada para evaluar la presión de fallo debida a un accidente del edificio de contención de una central nuclear PWR- W tres lazos. El modelo ...

    • 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 ...

    • Experimental, computational, and dimensional analysis of the mechanical performance of fused filament fabrication parts 

      Rivet Fernández, Iván; Dialamishabankareh, Narges; Cervera Ruiz, Miguel; Chiumenti, Michele; Reyes Pozo, Guillermo; Pérez Martínez, Marco Antonio (Multidisciplinary Digital Publishing Institute (MDPI), 2021-06)
      Article
      Accés obert
      Process parameters in Additive Manufacturing (AM) are key factors in the mechanical performance of 3D-printed parts. In order to study their effect, a three-zone model based on the printing pattern was developed. This ...