Departament de Matemàtica Aplicada III (fins octubre de 2015): Envíos recientes
Mostrando ítems 1-20 de 38
On the consistency of hysteresis models
Hysteresis is a nonlinear behavior encountered in a wide variety of processes including biology, optics, electronics, ferroelectricity, magnetism, mechanics, structures, among other areas. One of the main features of ...
Development of methods for monitoring the water and sanitation sector at different scales through human rights lenses
El reconocimiento del Derecho Humano al Agua y Saneamiento (DHAS) a través de las resoluciones de la Asamblea General y del Consejo de Derechos Humanos de Naciones Unidas en 2010 representa un gran avance en el sector del ...
Engineering patterns of wrinkles and bubbles in supported graphene through modeling and simulation
Graphene deposited on a substrate often exhibits out-of-plane deformations with different features and origins. Networks of localized wrinkles have been observed in graphene synthesized through CVD, as a result of compressive ...
Machine learning in multiscale modeling and simulations of molecular systems
Collective variables (CVs) are low-dimensional representations of the state of a complex system, which help us rationalize molecular conformations and sample free energy landscapes with molecular dynamics simulations. ...
Estimación bayesiana de cópulas extremales en procesos de Poisson
The estimation of occurrence probabilities of extremal quantities is essential in the study of hazards associated with natural phenomena. The extremal quantities of interest usually correspond to phenomena characterized ...
Decomposition techniques for computational limit analysis
Limit analysis is relevant in many practical engineering areas such as the design of mechanical structure or the analysis of soil mechanics. The theory of limit analysis assumes a rigid, perfectly-plastic material to model ...
The inverse problem on finite networks
The aim of this thesis is to contribute to the field of discrete boundary value problems on finite networks. Boundary value problems have been considered both on the continuum and on the discrete fields. Despite working ...
Validation and generation of curved meshes for high-order unstructured methods
In this thesis, a new framework to validate and generate curved high-order meshes for complex models is proposed. The main application of the proposed framework is to generate curved meshes that are suitable for finite ...
Continuous-discontinuous modelling for quasi-brittle failure: propagating cracks in a regularised bulk
A 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 ...
Efficient models for building acoustics : combining deterministic and statistical methods
Modelling 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 ...
On the structure of graphs without short cycles
The objective of this thesis is to study cages, constructions and properties of such families of graphs. For this, the study of graphs without short cycles plays a fundamental role in order to develop some knowledge on ...
Shape dynamics and lipid hydrodynamics of bilayer membranes: modeling, simulation and experiments
Biological membranes are continuously brought out of equilibrium, as they shape organelles, package and transport cargo, or respond to external actions. The dynamics of lipid membranes are very complex due to the tight ...
Design and validation of a structural health monitoring system for aeronautical structures.
Structural Health Monitoring (SHM) is an area where the main objective is the verification of the state or the health of the structures in order to ensure proper performance and maintenance cost savings using a sensor ...
Point-set manifold processing for computational mechanics: thin shells, reduced order modeling, cell motility and molecular conformations
In many applications, one would like to perform calculations on smooth manifolds of dimension d embedded in a high-dimensional space of dimension D. Often, a continuous description of such manifold is not known, and instead ...
Shock capturing for discontinuous Galerkin methods
Aquesta tesi doctoral proposa formulacions de Galerkin Discontinu (DG) d’alt ordre per la captura de shocks, obtenint alhora solucions altament precises per problemes de flux compressible. En les últimes dècades, la ...
Arbitrary lagrangian-eulerian formulation of quasistatic nonlinear problems
En esta tesis se presenta una metodología para la simulación numérica de procesos cuasistaticos en mecánica de sólidos no lineal, basada en una formulación arbitrariamente lagrangiana-euleriana (ale) del problema. Se hace ...
Analysis of fractional step, finite element methods for the incompressible navier-stokes equations
En la presente tesis se han estudiado métodos de paso fraccionado para la resolución numérica de la ecuación de Navier-Stokes incompresible mediante el método de los elementos finitos; dicha ecuación rige el movimiento de ...
Una metodología general para optimización estructural en diseño asistido por ordenador
En aquest treball s'analitza el procés de disseny des d'una perspectiva metodològica general. Aquest enfocament condueix de forma natural al concepte de disseny òptim i a la seva formulació com un problema de Programació ...
Complejidad de estructuras geométricas y combinatorias
En la presente memoria, se abordan cuatro problemas, existiendo en todos ellos una gran interacción entre la combinatoria y la geometría. El primer problema que se estudia es la introducción de varias extensiones del ...
Multiphase gas transport in a shear zone
In the post-operational phase of a Low/Intermediate-Low radioactive waste repository, gas will be generated in the caverns due to anaerobic corrosion of metals, and also chemical and microbial degradation of organic ...
