Exploració per autor "Cervera Ruiz, Miguel"
Ara es mostren els items 48-67 de 137
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Defect formation and material flow in Friction Stir Welding
Dialamishabankareh, Narges; Cervera Ruiz, Miguel; Chiumenti, Michele (2020-03)
Article
Accés obertThis 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 obertEn 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'editorialThis 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 obertThis 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 obertThis 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 obertEste 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 obertThis 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 obertFriction 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 obertSe 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 obertEn 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 obertThis 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 obertProcess 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 ... -
Explicit mixed strain-displacement finite element for dynamic geometrically non-linear solid mechanics
Lafontaine, N. M.; Rossi, Riccardo; Cervera Ruiz, Miguel; Chiumenti, Michele (2015-03-01)
Article
Accés obertLow-order finite elements face inherent limitations related to their poor convergence properties. Such difficulties typically manifest as mesh-dependent or excessively stiff behaviour when dealing with complex problems. A ... -
Explicit mixed strain–displacement finite elements for compressible and quasi-incompressible elasticity and plasticity
Cervera Ruiz, Miguel; Lafontaine, N. M.; Rossi, Riccardo; Chiumenti, Michele (2016-09)
Article
Accés obertThis paper presents an explicit mixed finite element formulation to address compressible and quasi-incompressible problems in elasticity and plasticity. This implies that the numerical solution only involves diagonal systems ... -
FEM analysis of orthotropic masonry walls via localized damage models
Pelà, Luca; Cervera Ruiz, Miguel; Roca Fabregat, Pedro (2010)
Text en actes de congrés
Accés restringit per política de l'editorialIn finite element analysis of masonry structures, continuum damage models are generally combined with a smeared description of damage. This common approach however, fails to provide a realistic simulation of damage and ... -
Finite element analysis and experimental validation of the thermomechanical behavior in laser solid forming of Ti-6Al-4V
Lu, Xufei; Lin, Xin; Chiumenti, Michele; Cervera Ruiz, Miguel (Elsevier, 2018-05)
Article
Accés obertA three-dimensional (3D) thermomechanical coupled model for Laser Solid Forming (LSF) of Ti-6Al-4V alloy has been calibrated through experiments of 40-layers metal deposition using different scanning strategies. The ... -
Finite element modeling of quasi-brittle cracks in 2D and 3D with enhanced strain accuracy
Cervera Ruiz, Miguel; Barbat Vlad, Gabriel; Chiumenti, Michele (2017-11)
Article
Accés obertThis paper discusses the finite element modeling of cracking in quasi-brittle materials. The problem is addressed via a mixed strain/displacement finite element formulation and an isotropic damage constitutive model. The ... -
Finite element modelling of internal and multiple localized cracks
Saloustros, Savvas; Pelà, Luca; Cervera Ruiz, Miguel; Roca Fabregat, Pedro (2017-02)
Article
Accés obertTracking algorithms constitute an efficient numerical technique for modelling fracture in quasi-brittle materials. They succeed in representing localized cracks in the numerical model without mesh-induced directional bias. ... -
Formulación estabilizada de elementos finitos triangulares y tetraédricos para problemas de incompresibilidad en deformaciones infinitesimales
Valverde Guzmán, Quino Martín; Chiumenti, Michele; Cervera Ruiz, Miguel; Agelet de Saracibar Bosch, Carlos (Universitat Politècnica de Catalunya, 2005)
Article
Accés obertSe presenta una formulación en multiescalas del método de elementos finitos capaz de estabilizar el comportamiento de elementos mixtos en problemas de elasticidad y de plasticidad incompresibles en deformaciones infinitesimales. ... -
Formulación estabilizada de elementos finitos triangulares y tetraédricos para problemas de incompresibilidad en grandes deformaciones
Valverde Guzmán, Quino Martín; Chiumenti, Michele; Agelet de Saracibar Bosch, Carlos; Cervera Ruiz, Miguel (Universitat Politècnica de Catalunya, 2006)
Article
Accés obertSe presenta una formulación en multiescalas del método de elementos finitos capaz de estabilizar el comportamiento de elementos mixtos en problemas de elasticidad y de plasticidad incompresibles en grandes deformaciones. ...