Exploració per tema "COMPDESMAT Project"
Ara es mostren els items 1-20 de 69
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A comparative study on homogenization strategies for multi-scale analysis of materials
(Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE), 2013-02-01)
Llibre
Accés obertOne of the most important engineering tasks over the years has been the design and manufacture of increasingly sophisticated structural materials as a result of the requirements related to the technological progress. In ... -
A generalized finite-strain damage model for quasi-incompressible hyperelasticity using hybrid formulation
(2016-03)
Article
Accés obertA new generalized damage model for quasi-incompressible hyperelasticity in a total Lagrangian finite-strain framework is presented. A Kachanov-like reduction factor (1 - D) is applied on the deviatoric part of the hyperelastic ... -
A homeostatic-driven turnover remodelling constitutive model for healing in soft tissues
(2016-03)
Article
Accés obertRemodelling of soft biological tissue is characterized by interacting biochemical and biomechanical events, which change the tissue's microstructure, and, consequently, its macroscopic mechanical properties. Remodelling ... -
A laminated structural finite element for the behavior of large non-linear reinforced concrete structures
(2016-10)
Article
Accés obertIn order to correctly predict the kinematics of complex structures, analysis using three-dimensional finite elements (3DFEs) seems to be the best alternative. However, simulation of large multi-layered structures with many ... -
A local constitutive model for the discrete element method: application to geomaterials and concrete
(Springer, 2015-06)
Article
Accés obertThis paper presents a local constitutive model for modelling the linear and non linear behavior of soft and hard cohesive materials with the discrete element method (DEM). We present the results obtained in the analysis ... -
A micromorphic model for steel fiber reinforced concrete
(2012-10-15)
Article
Accés obertA new formulation to model the mechanical behavior of high performance fiber reinforced cement composites with arbitrarily oriented short fibers is presented. The formulation can be considered as a two scale approach, ... -
A phase-field model for solute-assisted brittle fracture in elastic-plastic solids
(2018-03)
Article
Accés obertA phase-field theory of brittle fracture in elastoplastic solids hosting mobile interstitial solute species is developed in this paper. The theory, which is formulated within the framework of modern continuum mechanics, ... -
A phase-field/gradient damage model for brittle fracture in elastic-plastic solids
(2015-02)
Article
Accés obertThe formulation of a phase-field continuum theory for brittle fracture in elastic-plastic solids and its computational implementation are presented in this contribution. The theory is based on a virtual-power formulation ... -
A two-scale failure model for heterogeneous materials: numerical implementation based on the finite element method
(John Wiley & Sons, 2014-02)
Article
Accés obertIn the first part of this contribution, a brief theoretical revision of the mechanical and variational foundations of a Failure-Oriented Multiscale Formulation (FOMF) devised for modeling failure in heterogeneous materials ... -
Advanced numerical techniques for modeling tensile crack propagation in gravity dams
(Laboratório Nacional de Engenharia Civil, 2015)
Text en actes de congrés
Accés obertCracks propagating deep inside gravity dams can seriously affect their structural safety. Due to the potential catastrophic scenarios associated to the collapse of large concrete dams, it is a fundamental issue to ... -
An accurate FIC-FEM formulation for the 1D convection-diffusion-reaction equation
(2016-01)
Article
Accés obertIn this paper we present an accurate stabilized FIC-FEM formulation for the 1D advection-diffusion-reaction equation in the exponential and propagation regimes using two stabilization parameters. Both the steady-state and ... -
An efficient multi-scale method for non-linear analysis of composite structures
(2015-11-01)
Article
Accés obertThe use of multi-scale procedures is encouraged by the continuous increase of computational capacity, but it is still a challenge performing a non-linear analysis of real composite structures without the aid of large ... -
An enriched macro finite element for the static analysis of thick general quadrilateral laminated composite plates
(2016-10)
Article
Accés restringit per política de l'editorialThis article presents the formulation of an enriched macro finite element based on the trigonometric shear deformation theory for the static analysis of symmetrically laminated composite plates. Shear correction factor is ... -
Analysis of ultra low cycle fatigue problems with the Barcelona plastic damage model
(Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE), 2013)
Text en actes de congrés
Accés obertThis paper presents a plastic formulation based on the Barcelona plastic damage model capable of predicting the material failure due to Ultra Low Cycle Fatigue. This is achieved taking into account the fracture energy ... -
Analysis of Ultra Low Cycle Fatigue problems with the Barcelona plastic damage model and a new isotropic hardening law
(2015-04)
Article
Accés obertThis paper presents a plastic-damage formulation and a new isotropic hardening law, based on the Barcelona plastic damage model initially proposed by Lubliner et al. (1989) [1], which is capable of predicting steel failure ... -
Cohesive surface model for fracture based on a two-scale formulation: computational implementation aspects
(2016-10)
Article
Accés obertThe paper describes the computational aspects and numerical implementation of a two-scale cohesive surface methodology developed for analyzing fracture in heterogeneous materials with complex micro-structures. This approach ... -
Computational material design for acoustic cloaking
(John Wiley & Sons, 2017-12)
Article
Accés obertA topology optimization technique based on the topological derivative and the level set function is utilized to design/synthesize the micro-structure of a pentamode material for an acoustic cloaking device. The technique ... -
Computational modeling of high-performance steel fiber reinforced concrete using a micromorphic approach
(2013-12)
Article
Accés obertA finite element methodology for simulating the failure of high performance fiber reinforced concrete composites (HPFRC), with arbitrarily oriented short fibers, is presented. The composite material model is based on a ... -
Continuum approach to computational multi-scale modeling of fracture
(2014-09-01)
Article
Accés obertThis paper presents a FE2 multi-scale framework for numerical modeling of the structural failure of heterogeneous quasi-brittle materials. The model is assessed by application to cementitious materials. Using the Continuum ... -
Control of heat flux using computationally designed metamaterials
(2016)
Text en actes de congrés
Accés obertTo gain control over the diffusive heat flux in a given domain, one has to design metamaterials with a specifc distribution of the generally anisotropic thermal conductivity throughout the domain. Until now, the appropriate ...