Exploració per tema "Damage"
Ara es mostren els items 22-41 de 50
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Efficient constitutive model for continuous micro-modeling of masonry structures
(2023-01)
Article
Accés obertMasonry is a composite material often modeled as an equivalent homogenous material. However, the complexity of its micro-structure leads to complex mechanical responses, which are almost impossible to capture accurately ... -
Entropy characterisation of overstressed capacitors for lifetime prediction
(2016-12-30)
Article
Accés obertWe propose a method to monitor the ageing and damage of capacitors based on their irreversible entropy generation rate. We overstressed several electrolytic capacitors in the range of 33 µF–100 µF and monitored their entropy ... -
Evaluation of seismic damage in low-rise buildings of reinforced concrete masonry
(2016)
Text en actes de congrés
Accés restringit per política de l'editorialThe assessment of damage caused by earthquakes in structures, requires the use of nonlinear analysis, either static or dynamic, in order to define the performance of the buildings for the considered hazard levels. In this ... -
Failure pressure analysis of a nuclear reactor prestressed concrete containment building
(Elsevier, 2021-06)
Article
Accés obertThe failure analysis of an existing and operational nuclear power plant reactor containment building subjected to an accident internal pressure is studied in this paper. The computation is based on the Finite Element Method ... -
Finite element analysis of compressive failure in stiffened carbon fiber panels
(Universitat Politècnica de Catalunya, 2011-09-29)
Projecte Final de Màster Oficial
Accés restringit per decisió de l'autorThe use of composite materials in the aerospace industry is experiencing a large increase in recent years. Mainly they are used to build commercial aircraft fuselages. COCOMAT project had aimed to study and to improve ... -
Finite element modeling of quasi-brittle cracks in 2D and 3D with enhanced strain accuracy
(2017-11)
Article
Accés obertThis paper discusses the finite element modeling of cracking in quasi-brittle materials. The problem is addressed via a mixed strain/displacement finite element formulation and an isotropic damage constitutive model. The ... -
From continuum mechanics to fracture mechanics: the strong discontinuity approach
(2002-01)
Article
Accés obertThe paper deals with the strong discontinuity approach and shows the links with the decohesive fracture mechanics provided by that approach. On the basis of 1D continuum damage models it is shown that, by introducing some ... -
Global costs of protecting against sea-level rise at 1.5°C to 4.0°C
(2021-07)
Article
Accés obertSea-levels will rise, even with stringent climate change mitigation. Mitigation will slow the rate of rise. There is limited knowledge on how the costs of coastal protection vary with alternative global warming levels of ... -
Image processing, Time of Flight cameras and Sheet of light combination and "Road damage evaluation"
(Universitat Politècnica de Catalunya, 2016-04-08)
Treball Final de Grau
Accés restringit per decisió de l'autorSince the first day in Antwerp, I wanted to work in automotive world, my promoter, Dr. Luc Mertens motivated me about the world of the cameras and their applications. It was a new topic for me, but I think that the vision ... -
Indentation and scratch testing of a WC-6%wtCo cemented carbide: Corrosion effects on load-bearing capability and induced damage
(2020-04-10)
Article
Accés obertIn this work, corrosion effects on the indentation and scratch response of a WC-6%Co hardmetal are investigated. Experimental variables include relative long corrosion times as well as indentation and scratch testing ... -
Microplane model M7 for plain concrete. I: Formulation
(American Society of Civil Engineers (ASCE), 2013-12-01)
Article
Accés restringit per política de l'editorialMathematical modeling of the nonlinear triaxial behavior and damage of such a complexmaterial as concrete has been a long-standing challenge in which progress has been made only in gradual increments. The goal of this ... -
Model-wise algorithm for the resolution of fatigue problems
(CIMNE, 2015)
Text en actes de congrés
Accés obertThe present work presents a general constitutive model formulation and a numerical algorithm for automatically selecting the appropriate coupling of damage and plasticity as a function of the number of cycles the material ... -
Modeling of the behavior in high-cycle fatigue based on the coupling plasticity-damage in a mesoscopic scale
(CIMNE, 2015)
Comunicació de congrés
Accés obertThe methods of prediction of lifespan in high cycle fatigue are under development since decades and are used by engineers to dimension the structures. The purpose of the work presented in this paper is to establish a ... -
Numerical modelling of masonry shear walls failure mechanisms
(2014)
Text en actes de congrés
Accés restringit per política de l'editorialThis paper presents an investigation on the ability of two alternative FE-based numerical methods to simulate the in-plane strength and collapse of brick masonry shear walls. The methods considered consist of a meso-model, ... -
On the discrete constitutive models induced by strong discontinuity kinematics and continuum constitutive equations
(2000-11)
Article
Accés obertOn the basis of continuum constitutive models (stress vs. strain), the introduction of strong discontinuity kinematics (considering jumps in the displacement fields across a discontinuity interface) induces projected ... -
On the equivalence between traction- and stress-based approaches for the modeling of localized failure in solids
(2015-09)
Article
Accés obertThis 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 strong discontinuity approach in finite deformation settings
(John Wiley & sons, 2003-02)
Article
Accés obertTaking the strong discontinuity approach as a framework for modelling displacement discontinuities and strain localization phenomena, this work extends previous results in infinitesimal strain settings to finite deformation ... -
Online cellphone battery entropy measurement for SoH estimation
(2016)
Text en actes de congrés
Accés restringit per política de l'editorialThe widespread use of batteries requires knowledge of their state of health (SoH). In this paper we present a method to use entropy evolution as an aging indicator for batteries. Voltage, current and temperature are ... -
Phase transformation and subsurface damage in 3Y-TZP after sandblasting
(2013-05)
Article
Accés restringit per política de l'editorialObjective The goal of this work is to investigate t–m phase transformation, and subsurface damage in 3Y-TZP after sandblasting. Methods Commercial grade 3Y-TZP powder was conventionally sintered and fully dense ... -
Plastic damage model for nonlinear reinforced concrete frames analysis
(2005)
Text en actes de congrés
Accés obertThis paper describes an improved analytical model for predicting the nonlinear response of multistory reinforced concrete frames, based on the concepts of isotropic continuum damage mechanics combined with plasticity theory. ...
