Browsing by Contributor "Rodríguez Ferran, Antonio"
Now showing items 1-20 of 31
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A continuous damage model to mimic sharp cracks in quasi-brittle materials
(Universitat Politècnica de Catalunya, 2018-06)
Master thesis
Open AccessA usual trick in various modelling approaches for computational fracture (i.e. damage models, phase-field approaches) is to include an artificial residual stiffness. This is done to avoid singularity of the tangent stiffness ... -
A continuous-discontinuous model to introduce fluid pressure in a crack.
(Universitat Politècnica de Catalunya, 2016-07-14)
Bachelor thesis
Open AccessCracking of quasi-brittle materials (such as concrete, rocks,) may be modelled by means of continuous, discontinuous or continuous-discontinuous models. The latter combine a continuous damage model for the initial stages ... -
A continuous-discontinusous model to simulate crack branching in quasi-brittle failure
(Universitat Politècnica de Catalunya, 2016-07-20)
Master thesis
Open AccessUnderstanding the material failure of quasi-brittle materials, such as concrete, is of vital importance in civil engineering. A continuous-discontinuous model using X-FEM enrichment can be useful when an explicit representation ... -
Computational modelling of fracture: gradient damage models with variable internal length
(Universitat Politècnica de Catalunya, 2017-06)
Bachelor thesis
Open AccessFracture modelling has always been a direction of research in engineering, more specifically in civil engineering. In this last quarter of century, the implementation of nonlocality in damage models has been a direction ... -
Continuous-discontinuous modelling for quasi-brittle failure: propagating cracks in a regularised bulk
(Universitat Politècnica de Catalunya, 2013-12-05)
Doctoral thesis
Open AccessA new strategy to describe failure of quasi-brittle materials -concrete, for example- is presented. Traditionally, numerical simulation of quasi-brittle failure has been tackled from two different points of view: damage ... -
Continuous-discontinuous models of failure based on non-local displacements
(Universitat Politècnica de Catalunya, 2009-01)
Master thesis
Open AccessIn this work, a new continuous-discontinuous approach is presented. This new technique is based on a non-local model (such as continuum damage or plasticity) based on non- local displacements. On the one hand, this work ... -
Coupling of numerical and statistical methods in acoustics
(Universitat Politècnica de Catalunya, 2010-01-10)
Master thesis
Open AccessProblems in the field of vibroacoustics can be modelled in two fundamental ways. On the one hand, they can be addressed in a deterministic way, using numerical methods like the Finite Element Method. On the other hand, ... -
Damage initiation and propagation in non-local gradient models based on displacement smoothing
(Universitat Politècnica de Catalunya, 2016-02-22)
Minor thesis
Open Access -
Development of a tool for a 2-phase flow Electrical Resistance Tomography image reconstruction and analysis
(Universitat Politècnica de Catalunya, 2018-06-15)
Master thesis
Open Access
Covenantee: České vysoké učení technické v PrazeThe work is based on the research on two-phase flows in pressurized pipes with non-Newtonian fluids. Experiments are carried out in a pipe loop at the Water Engineering Laboratory (WEL) of the Czech Technical University ... -
Discontinuous Galerkin methods for elastoplasticity
(Universitat Politècnica de Catalunya, 2005-06)
Minor thesis
Open Access -
Effectiveness of suction to deaerate granular materials: an application in material handling industry
(Universitat Politècnica de Catalunya, 2017-06)
Bachelor thesis
Open AccessRemoving air from bagged bulk material is a major concern for the material handling industry. A common technique is the application of suction by means of a probe, right before sealing the bag. Recent industrial experience ... -
Efficient models for building acoustics : combining deterministic and statistical methods
(Universitat Politècnica de Catalunya, 2013-11-15)
Doctoral thesis
Open AccessModelling vibroacoustic problems in the field of building design is a challenging problem due to the large size of the domains and the wide frequency range required by regulations. Standard numerical techniques, for instance ... -
Energy balance in phase-field models
(Universitat Politècnica de Catalunya, 2020-09-29)
Bachelor thesis
Open AccessThe main objective of this report is to compute the energy balance for the modelling of fractures in 2D materials using Phase-fields models as a tool to verify the results. For a civil engineer, it is important to compute ... -
Granular flow characterisation towards an enhanced bulk feeder selection
(Universitat Politècnica de Catalunya, 2021-02-26)
Doctoral thesis
Open AccessIn the packaging industry, a wide range of powders and bulk solids are handled in bagging equipment using different bulk feeding techniques. Quality of the packaging is critically affected by feeder performance, which is ... -
La inestabilitat en estructures lleugeres d'acer galvanitzat: anàlisi de deformacíons, tensions i vinclament
(Universitat Politècnica de Catalunya, 2002-12)
Minor thesis
Open AccessLa construcció metàl·lica lleugera d’acer galvanitzat ha protagonitzat un gran augment en els darrers anys en el sector dels habitatges unifamiliars, degut a motius econòmics, estètics, de rapidesa de construcció i ... -
Locally adaptive phase-field models and transition to fracture
(Universitat Politècnica de Catalunya, 2020-11-30)
Doctoral thesis
Open AccessThis thesis proposes a new computational model for the efficient simulation of crack propagation, through the combination of a phase-field model in small subdomains around crack tips and a discontinuous model in the rest ... -
Metaheuristics and their application in engineering optimization
(Universitat Politècnica de Catalunya, 2012-11-27)
Minor thesis
Open AccessEsta tesina final de carrera estudia la posibilidad de utilizar metaheurísticas en problemas de optimización en ingeniería. Las metaheurísticas son métodos computacionales basados en la naturaleza, con cierta aleatoriedad ... -
Métodos iterativos eficientes para problemas de convección-difusión transitorios
(Universitat Politècnica de Catalunya, 2006-06-10)
Doctoral thesis
Open AccessDiversos procesos naturales e industriales de interés medioambiental se modelan a través de la ecuación de convección-difusión-reacción transitoria. Dos aplicaciones tecnológicas que han motivado esta tesis son el ... -
Modelització de l'efecte Payne d'una manta elastomèrica incorporada a un sistema de via
(Universitat Politècnica de Catalunya, 2014-02-25)
Minor thesis
Open AccessEs pretén en aquesta tesina estudiar l’afectació en l’atenuació global de vibracions que suposa considerar o no l’efecte Payne d’una manta elastomèrica reforçada amb filler incorporada a un sistema de via, així com ... -
Moment - curvature diagrams for light - weight sections
(Universitat Politècnica de Catalunya, 2006-11-08)
Minor thesis
Open AccessL'objectiu de la tesina és analitzar les seccions conformades en fred presents a l'assaig estudiant el seu comportament davant l'abonyegament. A més, obtenir les seves corbes ,o moment-curvatura sota diferents càrregues ...
