Exploració per tema "Elements finits, Mètode dels"
Ara es mostren els items 21-40 de 2286
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3D virtual laboratory for geotechnical applications: another perspective
(CIMNE, 2011)
Text en actes de congrés
Accés obertDiscrete element methods are important tools for investigating the mechanics of granular materials. In two dimensions, the reliability of these numerical approaches is increasingly being challenged, because they cannot ... -
3D-Mesomechanical analysis of cracking and spalling of concrete subject to high temperatures
(CIMNE, 2013)
Text en actes de congrés
Accés obertIn this paper, an existing meso-structural model for concrete which had been applied to the study of the mechanical effects of high temperatures in 2D, is extended to 3D, and to more complex coupled thermo-mechanical ... -
3D-Mesomechanical analysis of external sulfate attack in concrete
(CIMNE, 2017)
Text en actes de congrés
Accés obertThe present study focuses on degradation of concrete by external sulfate attack. The numerical model developed by the MECMAT/UPC group, incorporates coupled C-M analysis using a meso-mechanical approach with discrete ... -
3D-Simulation of electromagnetic and temperature fields in the continuous induction heaters
(CIMNE, 2015)
Text en actes de congrés
Accés obertThe quasi-3-D model was developed for continuous induction heating of billets with arbitrary cross section. This computer model is intended for evaluation of electrical and thermal both stationary and non-stationary ... -
A 2.5D automatic FEM-SBM method for the evaluation of free-field vibrations induced by underground railway infrastructures
(2022)
Text en actes de congrés
Accés obertThis paper presents an efficient method to predict underground railway-induced vibrations. The method uses the finite element method (FEM) to model the railway tunnel structure and the singular boundary method (SBM) to ... -
A 2.5D coupled FEM–SBM methodology for soil–structure dynamic interaction problems
(Elsevier, 2022-01-01)
Article
Accés obertIn this paper, a novel numerical methodology to deal with longitudinally invariant soil–structure interaction problems is proposed. The methodology uses the finite element method to model the structure and the singular ... -
A 3D generalized rigid particle contact model for rock fracture
(CIMNE, 2011)
Text en actes de congrés
Accés obertDetailed rigid particle models have been proposed for modeling fracture in quasibrittle materials. The rigid particle circular models proposed in the literature do not properly reproduce the known rock friction angle and ... -
A 3D-FEM-based model to predict the electrical constriction resistance of compressed contacts
(2017-09-11)
Article
Accés obertThis work proposes a method to estimate the electrical constriction resistance of two mating metallic rough surfaces based on the finite element method (FEM). The FEM-based method generates a random array of three-dimensional ... -
A benchmark study on identification of inelastic parameters based on deep drawing processes using pso – nelder mead hybrid approach
(CIMNE, 2013)
Text en actes de congrés
Accés obertOptimization techniques have been increasingly used to identification of inelastic material parameters owing to their generality. Development of robust techniques to solving this class of inverse problems has been a challenge ... -
A bodner-partom visco-plastic dynamic sphere benchmark problem
(CIMNE, 2013)
Text en actes de congrés
Accés obertDeveloping benchmark analytic solutions for problems in solid and fluid mechanics is very important for the purpose of testing and verifying computational physics codes. Our primary objective in this research is to obtain ... -
A combined finite-discrete element model for reinforced concrete under seismic load
(CIMNE, 2011)
Text en actes de congrés
Accés obertIn this work a numerical model for analysis of reinforced concrete structures under seismic load is presented. The model uses the combined finite-discrete element method; thus taking into account the discontinuous nature ... -
A combined implicit-explicit algorithm in time for non-linear finite element analysis
(2006-01)
Article
Accés obertAn algorithm combining the numerical execution in time of implicit and explicit methods of solution is presented in this paper. The algorithm swaps between both methods as required for the analysis. The whole mesh is solved ... -
A comparative study of interface capturing methods with amr for incompressible two-phase flows
(CIMNE, 2017)
Text en actes de congrés
Accés obertThis paper presents a comparative study of interface capturing methods with adaptive mesh refinement for Direct Numerical Simulation (DNS) of incompressible two- phase flows. The numerical algorithms for fluid motion ... -
A comparative study of computer models for friction and their influence on dynamics of the heavy rigid body on a horizontal surface
(CIMNE, 2013)
Text en actes de congrés
Accés obertUsing an example of a heavy rigid body moving on a horizontal surface and having with it a permanent contact the process of construction and verification for spatial dynamical models of the multibody systems is analyzed. ... -
A comparative study of failure criteria in sheet metal forming analysis
(CIMNE, 2011)
Text en actes de congrés
Accés obertDevelopment of predictive capabilities of forming failure can help not only to reduce the experimental effort of formability characterization but also to accelerate the development of new or improved sheet metal alloys. ... -
A comparative study of immersed-boundary interpolation methods for a flow around a stationary cylinder at low reynolds number
(CIMNE, 2013)
Text en actes de congrés
Accés obertThe accuracy and computational efficiency of various interpolation methods for the implementation of non grid-confirming boundaries is assessed. The aim of the research is to select an interpolation method that is both ... -
A comparative study on homogenization strategies for multi-scale analysis of materials
(Universitat Politècnica de Catalunya, 2013-01)
Projecte Final de Màster Oficial
Accés restringit per decisió de l'autorThe main goal of this thesis is, firstly, to present a general overview of the different techniques that have been developed in the last years in order to obtain a prediction of the behavior of elastoplastic composites by ... -
A comparison between the total lagrangian scheme (TLS) and the predominat twin reorientation (PTR) methods to analyze the twinning deformations in a rate dependent crystal plasticity model
(CIMNE, 2011)
Text en actes de congrés
Accés obertMaterials with Hexagonal-Closed Pack (HCP) crystal structures, as for example the magnesium and titanium alloys, have a small number of active slip systems at room temperature. This fact makes twinning as a predominant ... -
A comparison of two formulations to blend finite elements and mesh-free methods
(2004-03)
Article
Accés obertMesh-free methods have since their early developments been blended to the finite element formulation in order to benefit from the advantages of both numerical techniques. In this paper, two recently proposed formulations ... -
A comparison of two frameworks for kinematic hardening in hyperelasto-plasticity
(CIMNE, 2017)
Text en actes de congrés
Accés obertIn this work we compare two frameworks for thermodynamically consistent hyperelasto-plasticity with kinematic hardening. The first was formulated by Dettmer and Reese (2004), inspired by Lion (2000), and has been used to ...