Now showing items 55-69 of 69

    Particle finite element methods for modelling granular material flows 

    Dávalos Chargoy, César Emilio (Date of defense: 2014-06-19)

    The aim of this work is to present a new procedure for modelling industrial processes that involve granular material flows, using a numerical model based on the Particle Finite Element Method (PFEM). The numerical results ...

    Regularized Maxwell equations and nodal finite elements for electromagnetic field computations in frequency domain 

    Otín, R. (Rubén) (Date of defense: 2011-05-04)

    En esta tesis se presenta una alternativa a la formulación clásica de elementos finitos basada en elementos de arista (edge elements) y las ecuaciones de Maxwell curl-curl. Este enfoque alternativo se basa en elementos ...

    Riesgo sísmico de edificaciones en términos de pérdidas económicas mediante integración de costos de reparación de componentes 

    Yamin Lacouture, Luis Eduardo (Date of defense: 2016-01-28)

    The probabilistic seismic risk assessment in terms of economic losses for building portfolios aims at the estimation of the probability distribution functions of losses. This can be done for a specific seismic event ...

    Robust volume mesh generation for non-watertight geometries 

    Coll Sans, Abel (Date of defense: 2014-07-01)

    Nowadays large part of the time needed to perform a numerical simulation is spent in preprocessing, especially in the geometry cleaning operations and mesh generation. Furthermore, these operations are not easy to automatize ...

    Simulación numérica de procesos de compactación y extrusión de materiales pulverulentos: aplicación a la pulvimetalurgia industrial 

    Weyler Pérez, Rafael (Date of defense: 2000-07-17)

    Uno de los principales problemas asociados a la fabricación de piezas sinterizadas se debe a la pérdida de homogeneidad en las propiedades del aglomerado obtenido durante el proceso de compactación. Por ello, es primordial ...

    Simulación numérica y correlación experimental de las propiedades mecánicas en las aleaciones con memoria de forma. 

    Flor López, Silvia de la (Date of defense: 2005-04-29)

    El objetivo de este trabajo de investigación es evaluar y adaptar los modelos constitutivos existentes para la caracterización termomecánica de las aleaciones con memoria de forma de níquel-titanio (Ni-Ti) para permitir ...

    Stabilized finite element approximation of the incompressible MHD equations 

    Hernández Silva, Noel (Date of defense: 2010-07-12)

    No es frecuente encontrar un campo donde dos ramas principales de la Física estén involucradas. La Magnetohidrodinámica es uno de tales campos debido a que involucra a la Mecánica de Fluidos y al Electromagnetismo. Aun ...

    Stabilized finite element formulations for the three-field viscoelastic fluid flow problem 

    Castillo del Barrio, Ernesto (Date of defense: 2016-03-15)

    The Finite Element Method (FEM) is a powerful numerical tool, that permits the resolution of problems defined by partial differential equations, very often employed to deal with the numerical simulation of multiphysics ...

    Stabilized finite element methods for convection-diffusion-reaction, helmholtz and stokes problems 

    Nadukandi, Prashanth (Date of defense: 2011-05-13)

    We present three new stabilized finite element (FE) based Petrov-Galerkin methods for the convection-diffusionreaction (CDR), the Helmholtz and the Stokes problems, respectively. The work embarks upon a priori analysis ...

    Subgrid scale stabilized finite elements for low speed flows 

    Príncipe, Ricardo Javier (Date of defense: 2008-04-21)

    La descripción del flujo de fluidos involucra la solución de las ecuaciones de Navier-Stokes compresible, un problema muy complejo cuya estructura matemática no es del todo comprendida. Por lo tanto, mediante análisis ...

    The Fixed-Mesh ALE method applied to multiphysics problems using stabilized formulations 

    Baiges Aznar, Joan (Date of defense: 2011-01-14)

    The finite element method is a tool very often employed to deal with the numerical simulation of multiphysics problems.Many times each of these problems can be attached to a subdomain in space which evolves in time. Fixed ...

    Thermo-mechanical analysis of welding processes 

    Dialamishabankareh, Narges (Date of defense: 2014-03-12)

    This thesis deals with the numerical simulation of welding processes. The analysis is focused either at global level, considering the full component to be jointed, or locally, studying more in detail the heat affected zone ...

    Un método de elementos finitos para análisis hidrodinámico de estructuras navales 

    García Espinosa, Julio (Date of defense: 1999-12-20)

    La predicción precisa de los efectos producidos por el acoplamiento fluido estructura para cuerpos parcial o totalmente sumergidos, incluyendo superficies libres, es un problema de gran relevancia en la ingeniería naval ...

    Un nuevo método para la simulación numérica de problemas de partición de dominios 

    Cafiero Díaz, Mailhyn E. (Date of defense: 2014-12-18)

    The aim of this work is to develop, implement and validate a technique for information transfer, in the domain decomposition methods, able to address coupled thermomechanical problems, with mixed displacement-pressure ...

    Unified Lagrangian formulation for fluid and solid mechanics, fluid-structure interaction and coupled thermal problems using the PFEM 

    Franci, Alessandro (Date of defense: 2015-05-07)

    The objective of this thesis is the derivation and implementation of a unified Finite Element formulation for the solution of uid and solid mechanics, Fluid-Structure Interaction (FSI) and coupled thermal problems. The ...