Exploració per autor "Cervera Ruiz, Miguel"
Ara es mostren els items 1-20 de 82
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3D numerical modelling of twisting cracks under bending and torsion of skew notched beams
(2017-05)
Article
Accés restringit per política de l'editorialThe testing of mode III and mixed mode failure is every so often encountered in the dedicated literature of mechanical characterization of brittle and quasi-brittle materials. In this work, the application of the mixed ... -
3D numerical models of FSW processes with non-cylindrical pin
(Taylor & Francis, 2015-06)
Article
Accés obertFriction Stir Welding (FSW) process is a relatively recent welding process (patented in 1991). FSW is a solid-state joining process during which materials to be joined are not melted. During the FSW process, the behaviour ... -
3D numerical models using a fluid or a solid formulation of FSW processes with a non-cylindrical pin
(Springer, 2015-12)
Article
Accés obertFriction Stir Welding (FSW) process is a relatively recent welding process (patented in 1991). FSW is a solid-state joining process during which materials to be joined are not melted. During the FSW process, the behaviour ... -
A computational model for the numerical simulation of FSW processes
(Springer, 2010)
Text en actes de congrés
Accés restringit per política de l'editorialIn this paper a computational model for the numerical simulation of Friction Stir Welding (FSW) processes is presented. FSW is a new method of welding in solid state in which a shouldered tool with a profile probe is rotated ... -
A crack-tracking technique for localized cohesive-frictional damage
(2015-12-01)
Article
Accés obertThis paper extends the use of crack-tracking techniques within the smeared crack approach for the numerical simulation of cohesive-frictional damage on quasi-brittle materials. The mechanical behaviour is described by an ... -
Advances in the numerical simulation of 3D FSW processes
(2011)
Text en actes de congrés
Accés restringit per política de l'editorialThis work deals with the computational modeling and numerical simulation of 3D Friction Stir Welding (FSW) processes. Eulerian and ALE formulations have been used to solve the quasi-static thermal transient governing ... -
A fast and accurate two-stage strategy to evaluate the effect of the pin tool profile on metal flow, torque and forces in friction stir welding
(2017-03-01)
Article
Accés restringit per política de l'editorialPin geometry is a fundamental consideration in friction stir welding (FSW). It influences the thermal behaviour, material flow and forces during the weld and reflects on the joint quality. This work studies four pin ... -
A localized mapped damage model for orthotropic materials
(2014-05-08)
Article
Accés restringit per política de l'editorialThis paper presents an implicit orthotropic model based on the Continuum Damage Mechanics isotropic models. A mapping relationship is established between the behaviour of the anisotropic material and that of an isotropic ... -
A macro-modelling finite element technique for the realistic simulation of cracking in masonry structures
(CRC Press, 2016)
Text en actes de congrés
Accés restringit per política de l'editorialThis paper presents an improved computational model for the analysis of masonry structures based on continuum mechanics finite element approaches. The proposed numerical technique uses a cracktracking algorithm to model ... -
A mixed stabilized finite element formulation for strain localization analysis
(2010)
Text en actes de congrés
Accés obertThis work exploits the concept of stabilization techniques to improve the behaviour of either mixed or pu/mixed u/εlinear/linear triangular elements when strain localization analysis is required. Different stabilization ... -
A mixed three-field FE formulation for stress accurate analysis including the incompressible limit
(2015-01)
Article
Accés obertIn previous works, the authors have presented the stabilized mixed displacement/pressure formulation to deal with the incompressibility constraint. More recently, the authors have derived stable mixed stress/displacement ... -
Análisis de procesos de estereolitografía por el método de los elementos finitos
(2009-03-10T16:37:48Z)
Article
Accés obertLa estereolitografía es uno de las técnicas utilizadas en los procesos de fabricación rápida de prototipos, que tiene un gran interés industrial debido a su ahorro en tiempo respecto a los procesos tradicionales. Una de ... -
Análisis dinámico en rotura de estructuras laminares y tridimensionales de hormigón armado
(2009-04-20T12:42:46Z)
Article
Accés obertEn este artículo se presenta un modelo computacional tridirnensional para el análisis dinámico en condiciones extremas de estructuras de hormigón armado. El modelo contempla la discretización de la ecuación dinámica de ... -
Analysis of the effect of provisional ties on the construction and current deformation of Mallorca cathedral
(2016-04)
Article
Accés restringit per política de l'editorialThis 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., ... -
An energy-equivalent d+/d- damage model with enhanced microcrack closure-reopening capabilities for cohesive-frictional materials
(2017-04)
Article
Accés obertIn this paper, an energy-equivalent orthotropic d+/d- damage model for cohesive-frictional materials is formulated. Two essential mechanical features are addressed, the damage-induced anisotropy and the microcrack ... -
An enhanced finite element macro-model for the realistic simulation of localized cracks in masonry structures: a large-scale application
(Taylor & Francis, 2018-03)
Article
Accés restringit per política de l'editorialFinite element macro-modelling approaches are widely used for the analysis of large-scale masonry structures. Despite their efficiency, they still face two important challenges: the realistic representation of damage and ... -
An orthotropic damage model for the analysis of masonry structures
(2013)
Article
Accés restringit per política de l'editorialThis paper presents a numerical model for nonlinear analysis of masonry structural elements based on Continuum Damage Mechanics. The material is described at the macro-level, i.e. it is modeled as a homogeneous orthotropic ... -
A novel positive/negative projection in energy norm for the damage modeling of quasi-brittle solids
(2018-05)
Article
Accés restringit per política de l'editorialThe asymmetric tensile/compressive material behavior and microcracks closure-reopening (MCR) effects exhibited by quasi-brittle solids are of significant importance to the nonlinear responses of engineering structures under ... -
A novel stress-accurate FE technology for highly non-linear analysis with incompressibility constraint: application to the numerical simulation of the FSW process
(American Institute of Physics (AIP), 2013)
Text en actes de congrés
Accés restringit per política de l'editorialIn this work a novel finite element technology based on a three-field mixed formulation is presented. The Variational Multi Scale (VMS) method is used to circumvent the LBB stability condition allowing the use of linear ... -
A phenomenological model for the solidification of eutectic and hypoeutectic alloys including recalescence and undercooling
(2018-05)
Article
Accés obertIn this work, a novel phenomenological model is proposed to study the liquid-to-solid phase change of eutectic and hypoeutectic alloy compositions. The objective is to enhance the prediction capabilities of the solidification ...
