Ara es mostren els items 88-107 de 137

    • Numerical analysis of the manufacturing processes of a mock-up of the ITER NHF First Wall Panel 

      González Lopez, Jose Manuel; Chiumenti, Michele; Cervera Ruiz, Miguel; Agelet de Saracibar Bosch, Carlos (2018-10)
      Article
      Accés obert
      The objective of ITER is to build a new Tokamak, with the goal of demonstrating the scientific and technical feasibility of fusion power. The First Wall Panels are the inner component of the reactor, built with different ...
    • Numerical and experimental analysis of the structural performance of AM components built by fused filament fabrication 

      Dialamishabankareh, Narges; Chiumenti, Michele; Cervera Ruiz, Miguel; Rossi, Riccardo; Chasco, Uxue; Domingo, Miquel (Springer, 2021-03)
      Article
      Accés restringit per política de l'editorial
      This work analyses the performance of parts built by Additive Manufacturing (AM) using Fused Filament Fabrication (FFF) demonstrating the correlation between the printing orientation and structural performance. FFF components ...
    • Numerical methods 

      Agelet de Saracibar Bosch, Carlos; Boman, Romain; Bussetta, Philippe; Cajas García, Juan Carlos; Cervera Ruiz, Miguel; Chiumenti, Michele; Coll Sans, Abel; Dadvand, Pooyan; Hernández Ortega, Joaquín Alberto; Houzeaux, Guillaume; Pasenau de Riera, Miguel; Ponthot, Jean Philippe (Wiley, 2016)
      Capítol de llibre
      Accés restringit per política de l'editorial
      As one of the results of an ambitious project, this handbook provides a well-structured directory of globally available software tools in the area of Integrated Computational Materials Engineering (ICME). The compilation ...
    • Numerical modeling of the electron beam welding and its experimental validation 

      Chiumenti, Michele; Cervera Ruiz, Miguel; Dialami, Narges; Wu, Bin; Jinwei, L.; Agelet de Saracibar Bosch, Carlos (2016-11)
      Article
      Accés obert
      Electron Beam Welding (EBW) is a highly efficient and precise welding method increasingly used within the manufacturing chain and of growing importance in different industrial environments such as the aeronautical and ...
    • Numerical modelling and experimental validation in Selective Laser Melting 

      Chiumenti, Michele; Miranda Neiva, Eric; Salsi, Emilio; Cervera Ruiz, Miguel; Badia, Santiago; Moya, Joan; Chen, Zhuoer; Lee, Caroline; Davies, Christopher (2017-12)
      Article
      Accés obert
      In this work a finite-element framework for the numerical simulation of the heat transfer analysis of additive manufacturing processes by powder-bed technologies, such as Selective Laser Melting, is presented. These kind ...
    • Numerical modelling of heat transfer and experimental validation in powder-bed fusion with the virtual domain approximation 

      Miranda Neiva, Eric; Chiumenti, Michele; Cervera Ruiz, Miguel; Salsi, Emilio; Piscopo, Gabriele; Badia, Santiago; Martín Huertas, Alberto Francisco; Chen, Zhuoer; Lee, Caroline; Davies, Christopher (2020-01)
      Article
      Accés obert
      Among metal additive manufacturing technologies, powder-bed fusion features very thin layers and rapid solidification rates, leading to long build jobs and a highly localized process. Many efforts are being devoted to ...
    • Numerical modelling of microstructure evolution in friction stir welding (FSW) 

      Dialamishabankareh, Narges; Cervera Ruiz, Miguel; Chiumenti, Michele (Multidisciplinary Digital Publishing Institute (MDPI), 2018-03)
      Article
      Accés obert
      This work studies the metallurgical and microstructural aspects of Friction Stir Welding (FSW) in terms of grain size and microhardness. The modelling is based on the combination of an apropos kinematic framework for the ...
    • Numerical simulation and experimental calibration of additive manufacturing by blown powder technology. Part I: thermal analysis 

      Chiumenti, Michele; Lin, Xin; Cervera Ruiz, Miguel; Lei, Wei; Zheng, Yuxiang; Huang, Weidong (2017-06)
      Article
      Accés obert
      Purpose This paper aims to address the numerical simulation of additive manufacturing (AM) processes. The numerical results are compared with the experimental campaign carried out at State Key Laboratory of Solidification ...
    • Objectivity in quasi-brittle structural failure via adaptive formulation and mesh refinement 

      Barbat Vlad, Gabriel; Cervera Ruiz, Miguel; Venghaus, Henning; Chiumenti, Michele (2022-12)
      Article
      Accés restringit per política de l'editorial
      In this work, the combined implementation of Adaptive Formulation Refinement (AFR) and Adaptive Mesh Refinement (AMR) strategies is proposed for the efficient and mesh objective evaluation of quasi-brittle fracture. A ...
    • On the computational modeling of FSW processes 

      Agelet de Saracibar Bosch, Carlos; Chiumenti, Michele; Santiago, Diego; Cervera Ruiz, Miguel; Dialami, Narges; Lombera, Guillermo (NEAT Press, 2010)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This work deals with the computational modeling and numerical simulation of Friction Stir Welding (FSW) processes. Here a quasi-static, transient, mixed stabilized Eulerian formulation is used. Norton-Hoff and Sheppard-Wright ...
    • On the equivalence between traction- and stress-based approaches for the modeling of localized failure in solids 

      Wu, Jian-Ying; Cervera Ruiz, Miguel (2015-09)
      Article
      Accés obert
      This work investigates systematically traction- and stress-based approaches for the modeling of strong and regularized discontinuities induced by localized failure in solids. Two complementary methodologies, i.e., ...
    • On the mechanics of strain localization in plasticity: isotropic and orthotropic, elasto- and rigid-plastic, associated and non-associated models 

      Cervera Ruiz, Miguel; Wu, Jian-Ying; Kim, Sungchul; Chiumenti, Michele (2022-04)
      Article
      Accés obert
      As strain localization is usually prognostics of localized failure in solids and structures, prediction of its occurrence and quantification of its adverse effects are of both theoretical and practical significance. Regarding ...
    • Optimal kinematics for finite elements with smeared-embedded discontinuity 

      Wu, J.Y.; Cervera Ruiz, Miguel (2009)
      Text en actes de congrés
      Accés obert
      In this paper an optimal kinematics for finite elements with smeared non-uniform discontinuity/crack is proposed to eliminate the spurious stress transfer across a fully softened crack (i.e. stress locking). We first ...
    • Out-of-plane seismic response and failure mechanism of masonry structures using finite elements with enhanced strain accuracy 

      Vlachakis, Georgios; Cervera Ruiz, Miguel; Barbat Vlad, Gabriel; Saloustros, Savvas (Elsevier, 2019-03)
      Article
      Accés obert
      The out-of-plane response is a complex and at the same time key aspect of the seismic vulnerability of masonry structures. It depends on several factors, some of which are the material properties, the quality of the walls, ...
    • Peridynamic buildability analysis of 3D-printed concrete including damage, plastic flow and collapse 

      Zhu, Jinggao; Ren, Xiaodan; Cervera Ruiz, Miguel (Elsevier, 2023-07)
      Article
      Accés restringit per política de l'editorial
      Without the restriction of formwork, 3D–printed concrete (3DPC) shows great advantages in construction; for the same reason, it presents stability problems, which greatly affect its buildability. In the present paper, a ...
    • Prediction of joint line remnant defect in friction stir welding 

      Dialamishabankareh, Narges; Cervera Ruiz, Miguel; Chiumenti, Michele; Segatori, Antonio (2019-02)
      Article
      Accés obert
      This work studies computationally and experimentally the joint line remnant defects emerging in friction stir welding (FSW) due to oxide layer propagation into the weld. A finite element-based model is used for the ...
    • Recoater-induced distortions and build failures in selective laser melting of thin-walled Ti6Al4V parts 

      Lu, Xufei; Chiumenti, Michele; Cervera Ruiz, Miguel; Slimani, Mehdi; Gonzàlez, Iban (Multidisciplinary Digital Publishing Institute (MDPI), 2023-04)
      Article
      Accés obert
      Additively manufactured thin-walled structures through selective laser melting (SLM) are of great interest in achieving carbon-neutral industrial manufacturing. However, residual stresses and warpages as well as recoater ...
    • Reliability and cost efficiency of finite element methods for non-linear structural analysis 

      Oñate Ibáñez de Navarra, Eugenio; Barbat Barbat, Horia Alejandro; Cervera Ruiz, Miguel; Oliver Olivella, Xavier (1995)
      Report de recerca
      Accés obert
    • Residual stress and distortion of rectangular and S-shaped Ti-6Al-4V parts by Directed Energy Deposition: modelling and experimental calibration 

      Lu, Xufei; Lin, Xin; Chiumenti, Michele; Cervera Ruiz, Miguel; Hu, Yunlong; Ji, Xianglin; Ma, Liang; Yang, Haiou; Huang, Weidong (Elsevier, 2019-03)
      Article
      Accés obert
      Residual stresses and distortion in Additive Manufactured (AM) parts are two key obstacles which seriously hinder the wide application of this technology. Nowadays, understanding the thermomechanical behavior induced by ...
    • Residual stresses control in additive manufacturing 

      Lu, Xufei; Cervera Ruiz, Miguel; Chiumenti, Michele; Lin, Xin (MDPI, 2021-12)
      Article
      Accés obert
      Residual stresses are one of the primary causes for the failure of parts or systems in metal additive manufacturing (AM), since they easily induce crack propagation and structural distortion. Although the formation of ...