Browsing by Author "Cervera Ruiz, Miguel"
Now showing items 1-20 of 141
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3D numerical modelling of twisting cracks under bending and torsion of skew notched beams
Benedetti, Lorenzo; Cervera Ruiz, Miguel; Chiumenti, Michele (2017-05)
Article
Open AccessThe 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
Bussetta, Philippe; Dialamishabankareh, Narges; Chiumenti, Michele; Agelet de Saracibar Bosch, Carlos; Cervera Ruiz, Miguel; Ponthot, Jean Philippe (Taylor & Francis, 2015-06)
Article
Open AccessFriction 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
Bussetta, Philippe; Dialamishabankareh, Narges; Chiumenti, Michele; Agelet de Saracibar Bosch, Carlos; Cervera Ruiz, Miguel; Boman, Romain; Ponthot, Jean Philippe (Springer, 2015-12)
Article
Open AccessFriction 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 chimera method for thermal part-scale metal additive manufacturing simulation
Slimani, Mehdi; Cervera Ruiz, Miguel; Chiumenti, Michele (Elsevier, 2024-11)
Article
Restricted access - publisher's policyThis paper presents a Chimera approach for the thermal problems in welding and metallic Additive Manufacturing (AM). In particular, a moving mesh is attached to the moving heat source while a fixed background mesh covers ... -
A comparative review of XFEM, mixed FEM and phase-field models for quasi-brittle cracking
Cervera Ruiz, Miguel; Barbat Vlad, Gabriel; Chiumenti, Michele; Wu, Jian-Ying (2022-03)
Article
Restricted access - publisher's policyIn this work, a critical comparison between three different numerical approaches for the computational modelling of quasi-brittle structural failure is presented. Among the many finite element approaches devised to solve ... -
A computational model for progressive cracking in large dams due to the swelling of concrete
Cervera Ruiz, Miguel; Oliver Segura, José; Herrero, E.; Oñate Ibáñez de Navarra, Eugenio (1990-09)
Article
Open AccessThe paper presents a computational model for the analysis of large concrete gravity dams subjected to severe damage due to internal actions. It has been observed in several operating concrete dams that the combined effects ... -
A computational model for the numerical simulation of FSW processes
Agelet de Saracibar Bosch, Carlos; Chiumenti, Michele; Santiago, Diego; Cervera Ruiz, Miguel; Dialami, Narges; Lombera, Guillermo (Springer, 2010)
Conference report
Restricted access - publisher's policyIn 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
Saloustros, Savvas; Pelà, Luca; Cervera Ruiz, Miguel (2015-12-01)
Article
Open AccessThis 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 ... -
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
Dialami, Narges; Cervera Ruiz, Miguel; Chiumenti, Michele; Agelet de Saracibar Bosch, Carlos (2017-03-01)
Article
Open AccessPin 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 general procedures for deriving thin plate bending elements with one degree of feedom por node
Oñate Ibáñez de Navarra, Eugenio; Cervera Ruiz, Miguel (1993-04)
Research report
Open Access -
A hybrid numerical-experimental strategy for predicting mechanical response of components manufactured via FFF
Dialamishabankareh, Narges; Chiumenti, Michele; Cervera Ruiz, Miguel; Chasco Goñi, Uxue; Reyes Pozo, Guillermo; Pérez Martínez, Marco Antonio (2022-10)
Article
Open AccessIn this paper a new methodology developed for predicting the mechanical performance of the structures additively manufactured by Fused Filament Fabrication is presented. The novelty of the approach consists in accounting ... -
A localized mapped damage model for orthotropic materials
Pelà, Luca; Cervera Ruiz, Miguel; Oller Martínez, Sergio Horacio; Chiumenti, Michele (2014-05-08)
Article
Restricted access - publisher's policyThis 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
Saloustros, Savvas; Pelà, Luca; Cervera Ruiz, Miguel; Roca Fabregat, Pedro (CRC Press, 2016)
Conference report
Restricted access - publisher's policyThis 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
Chiumenti, Michele; Cervera Ruiz, Miguel; Agelet de Saracibar Bosch, Carlos (2010)
Conference report
Open AccessThis 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
Chiumenti, Michele; Cervera Ruiz, Miguel; Codina, Ramon (2015-01)
Article
Open AccessIn 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 ... -
A multi-criteria h-adaptive finite-element framework for industrial part-scale thermal analysis in additive manufacturing processes
Filho, Carlos Augusto Moreira; Caicedo Silva, Manuel Alejandro; Cervera Ruiz, Miguel; Chiumenti, Michele; Baiges Aznar, Joan (2022-12)
Article
Open AccessThis work presents an h-adaptive finite-element (FE) strategy to address the numerical simulation of additive manufacturing (AM) of large-scale parts. The wire-arc additive manufacturing is chosen as the demonstrative ... -
A novel positive/negative projection in energy norm for the damage modeling of quasi-brittle solids
Wu, Jian-Ying; Cervera Ruiz, Miguel (2018-05)
Article
Open AccessThe 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
Chiumenti, Michele; Cervera Ruiz, Miguel; Agelet de Saracibar Bosch, Carlos; Dialami, Narges (American Institute of Physics (AIP), 2013)
Conference report
Restricted access - publisher's policyIn 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
Chiumenti, Michele; Cervera Ruiz, Miguel; Salsi, Emilio; Zonato, Andrea (2018-05)
Article
Open AccessIn 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 ... -
A rate-dependent isotropic damage model for the seismic analysis of concrete dams
Cervera Ruiz, Miguel; Oliver Olivella, Xavier; Manzoli, Osvaldo (Wiley, 1996-09)
Article
Open AccessIn this paper a rate-dependent isotropic damage model developed for the numerical analysis of concrete dams subjected to seismic excitation is presented. The model is shown to incorporate two features essential for seismic ...