Exploració per tema "Finite element"

Ara es mostren els items 1-20 de 25

    • A generic performance analysis technique applied to different CFD methods for HPC 

      Garcia Gasulla, Marta; Banchelli Gracia, Fabio; Peiró Conde, Kilian; Ramírez Gargallo, Guillem; Houzeaux, Guillaume; Hassan Saïdi, Ismaïl Ben; Tenaud, Christian; Spisso, Ivan; Mantovani, Filippo (Taylor & Francis, 2020-07-16)
      Article
      Accés obert
      For complex engineering and scientific applications, Computational Fluid Dynamics (CFD) simulations require a huge amount of computational power. As such, it is of paramount importance to carefully assess the performance ...

    • Accelerated 3D multi-body seakeeping simulations using unstructured finite elements 

      Serván Camas, Borja; García Espinosa, Julio (2013-11-01)
      Article
      Accés restringit per política de l'editorial
      Being capable of predicting seakeeping capabilities in the time domain is of great interest for the marine and offshore industries. However, most computer programs used work in the frequency domain, with the subsequent ...

    • Algebraic multigrid preconditioning within parallel finite-element solvers for 3-D electromagnetic modelling problems in geophysics 

      Koldan, Jelena; Puzyrev, Vladimir; de la Puente, Josep; Houzeaux, Guillaume; Cela, José M. (Wiley-Blackwell, 2014-06)
      Article
      Accés obert
      We present an elaborate preconditioning scheme for Krylov subspace methods which has been developed to improve the performance and reduce the execution time of parallel node-based finite-element solvers for three-dimensional ...

    • Algoritmo de remallado automático de elementos triangulares durante los análisis con elemento finito 

      Hermosillo-Arteaga, Armando; Romo, M.P.; Magaña, R.; Carrera, J. (Universitat Politècnica de Catalunya. CIMNE, 2018)
      Article
      Accés obert
      En este trabajo se presenta un algoritmo de refinamiento automático de elementos finitos triangulares. Es bien sabido que los tamaños de los elementos de la malla juegan un papel importante en el modelado de un medio ...

    • An accurate, adaptive and scalable parallel finite element framework for the part-scale thermo-mechanical analysis in metal additive manufacturing processes 

      Filho, Carlos Augusto Moreira; Caicedo Silva, Manuel Alejandro; Cervera Ruiz, Miguel; Chiumenti, Michele; Baiges Aznar, Joan (Springer, 2023-10-06)
      Article
      Accés restringit per política de l'editorial
      This work introduces a distributed memory machine and octree-based Finite Element (FE) framework for modeling metal Additive Manufacturing (AM) processes. In this sense, an Adaptive Mesh Refinement (AMR) is used to accurately ...

    • An adaptive fixed-mesh ALE method for free surface flows 

      Baiges Aznar, Joan; Codina, Ramon; Pont Ribas, Arnau; Castillo, Ernesto (2017-01-01)
      Article
      Accés obert
      In this work we present a Fixed-Mesh ALE method for the numerical simulation of free surface flows capable of using an adaptive finite element mesh covering a background domain. This mesh is successively refined and unrefined ...

    • An experimental and numerical investigation on fatigue of composite and metal aircraft structures 

      Pitta, Siddharth; Rojas Gregorio, José Ignacio; Roure Fernández, Francisco; Crespo Artiaga, Daniel; Wahab, Magd Abdel (2022-04)
      Article
      Accés obert
      The static strength and fatigue crack resistance of the aircraft skin structures depend on the materials used and joint type. Most of the commercial aircraft’s skin panel structures are made from aluminium alloy and carbon ...

    • Application of the proper generalized decomposition to elasto-plastic finite element analysis 

      Zuchiatti, S.; Feulvarch, E.; Roux, J.-C; Bergheau, J.-M.; Perrin, G.; Tissot, S. (CIMNE, 2015)
      Comunicació de congrés
      Accés obert
      The aim of this paper is to develop the PGD for time dependent elastoplastic problems with cyclic loadings. The objective is to show that the PGD can be well suited for simulating a ratchet effect by separating ...

    • Application of grouted connections to marine structures 

      Ollivier, Arthur (Universitat Politècnica de Catalunya, 2017-01-26)
      Projecte Final de Màster Oficial
      Accés restringit per decisió de l'autor
      Realitzat a/amb:   SENER
      It is standard practice to connect offshore steel structures (oil, gas, or wind structures) to their foundation piles using cylindrical shaped grouted connections, sometimes with welded shear keys, providing thus convenient ...

    • Edge-based parallel framework for the simulation of 3d CSEM surveys 

      Castillo Reyes, Octavio; de la Puente, Josep; Puzyrev, Vladimir; Cela, José M. (Society of Exploration Geophysicists and American Association of Petroleum Geologists, 2016)
      Comunicació de congrés
      Accés obert

    • Effects of an internal sulfate attack and an alkali-aggregate reaction in a concrete dam 

      Campos, A.; López Garello, Carlos María; Blanco Álvarez, Ana; Aguado de Cea, Antonio (2018-03)
      Article
      Accés obert
      The alkali-aggregate reaction and the internal sulfate attack are two chemical reactions that lead to expansions in concrete structures. The former is one of the main causes of expansions in concrete dams and has been ...

    • Evaluation of Safety Factors in Discontinuous Rock 

      Alonso Pérez de Agreda, Eduardo; Carol, Ignacio; Delahaye, Carlos Héctor; Gens Solé, Antonio; Prat Catalán, Pere (Elsevier, 1996)
      Article
      Accés restringit per política de l'editorial
      Safety factors for kinematically admissible failure mechanisms in jointed rock masses have been defined with linear and nonlinear failure criteria for rock discontinuities. Data required to compute these safety factors ...

    • Finite element analysis of R.C. Arches with openings strengthened by CFRP laminates 

      Ali, Ammar Yaser; Hamza, Bashar Abid (CIMNE, 2015)
      Comunicació de congrés
      Accés obert
      The main objective of this research is to present an analytical study to investigate the behavior and performance of reinforced concrete arches with and without openings , un-strengthened and strengthened (externally by ...

    • Formulação numérica de estruturas compósitas amortecidas utilizando as teorias da Deformação Cisalhante de Primeira Ordem e de Alta Ordem 

      Faria, A.W.; Lima, A.M.G. de (Universitat Politècnica de Catalunya. CIMNE, 2014)
      Article
      Accés obert
      Materiais compósitos vêm sendo largamente utilizados no projeto de estruturas aeronáuticas devido ao seu baixo peso e alta resistência mecânica. Porém, estruturas compósitas são expostas a perturbações estáticas e/ou ...

    • Low-cost online contact resistance measurement of power connectors to ease predictive maintenance 

      Kadechkar, Akash; Moreno Eguilaz, Juan Manuel; Riba Ruiz, Jordi-Roger; Capelli, Francesca (2019-03-12)
      Article
      Accés obert
      With the increasing use of sensors and wireless communication systems, predictive maintenance is acquiring more and more importance to assess the condition of in-service equipment. Predictive maintenance presents promising ...

    • Low-dissipation finite element strategy for low Mach number reacting flows 

      Both, Ambrus; Lehmkuhl Barba, Oriol; Mira Martínez, Daniel; Ortega, Marc (Elsevier, 2020-03-30)
      Article
      Accés obert
      The present paper extends the conservative finite element convective scheme proposed by Charnyi et al.(Journal of Computational Physics 337, 2017, 289–308) originally formulated for incompressible flows to the low Mach ...

    • MPI+X: task-based parallelisation and dynamic load balance of finite element assembly 

      Garcia, Marta; Houzeaux, Guillaume; Ferrer, Roger; Artigues, Antoni; López, Victor; Labarta Mancho, Jesús José; Vázquez, Mariano (Taylor & Francis, 2019-05)
      Article
      Accés obert
      The main computing phases of numerical methods for solving partial differential equations are the algebraic system assembly and the iterative solver. This work focuses on the first task, in the context of a hybrid MPI+X ...

    • Numerical homogenization and experimental validation of a composite plate using modal analysis 

      Pérez Martínez, Marco Antonio; Gil Espert, Lluís; Hammami, Farah; Neifar, Mondher; Chafra, Moez (2010)
      Text en actes de congrés
      Accés restringit per acord de confidencialitat
      A Finite Element (FE) simulation and an experimental (EXP) test are performed for the validation of the homogenized global elastic properties of a composite material plate. Composite material homogenization is based on ...

    • 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 ...

    • Parallel Implementation of Domain Composition Methods 

      Houzeaux, Guillaume; Cajas García, Juan Carlos; Eguzkitza, Beatriz; Vázquez, Mariano (Saxe-Coburg Publications, 2015-04)
      Capítol de llibre
      Accés obert
      Domain composition methods (DCM) consist of obtaining a solution to a problem on a domain, from the formulations of the same problem expressed on various subdomains. These methods have therefore the oppostive objective to ...