Now showing items 27-46 of 69

    De Gaudí a Miralles : cent anys d'estructura metàl.lica a Barcelona 

    Pons Poblet, Josep Maria (Date of defense: 2014-09-16)

    The present project is aimed to analyze the steel structure from an evolutionary point of view. The study¿s context has been the 20th century on the Catalan capital city in order to see how the historical, normative and ...

    Design of static intercell interference coordination schemes for realistic lte-based cellular networks 

    González González, David (Date of defense: 2014-01-29)

    Today, 3.5 and 4G systems including Long Term Evolution (LTE) and LTE-Advanced (LTE-A) support packet-based services and provide mobile broadband access for bandwidth-hungry applications. In this context of fast evolution, ...

    Development and applications of the Finite Point Method to compressible aerodynamics problems 

    Ortega, E. (Enrique) (Date of defense: 2014-05-12)

    This work deals with the development and application of the Finite Point Method (FPM) to compressible aerodynamics problems. The research focuses mainly on investigating the capabilities of the meshless technique to address ...

    Elementos estabilizados de bajo orden en mecánica de sólidos 

    Valverde Guzmán, Quino Martín (Date of defense: 2002-12-09)

    Se proponen nuevos elementos finitos para problemas en mecánica de sólidos en el marco de una formulación estabilizada novedosa en este ámbito. Esta formulación se basa en el método de las sub-escalas, y particularmente ...

    Elementos finitos mixtos estabilizados para flujos viscoplásticos 

    Moreno, E. (Elvira) (Date of defense: 2014-02-26)

    The objective of this thesis is to develop and evaluate a methodology for the solution of the Navier-Stokes equations for Bingham Herschel-Bulkley viscoplastic fluids using stabilized mixed velocity/pressure finite elements. ...

    Estudi teòric i experimental del comportament del lligament creuat posterior i del tendó patel·lar a les forces tallants del genoll caní: sa, amb escissió del lligament creuat anterior i reparat amb la tècnica d'avanç de la tuberositat tibial (TTA) 

    Pérez Guindal, Elsa (Date of defense: 2013-12-05)

    The knee joint is the largest and most complex both in humans and in canines. The internal forces that govern it, are not known exactly. Canine knee injuries are recurrent, especially in the anterior cruciate ligament, a ...

    Estudio constitutivo de materiales compuestos laminados sometidos a cargas cíclicas 

    Mayugo Majó, Joan Andreu (Date of defense: 2003-09-22)

    La tesis propone una metodología para el análisis de la degradación a fatiga que produce la aplicación de cargas cíclicas en un composite laminado de fibras largas.<br/>En primer lugar se han estudiado los mecanismos de ...

    Estudio de arcos estructurales obtenidos por embutición a partir de paneles nervados conformados en frío 

    Casariego Vales, Pedro (Date of defense: 2014-07-08)

    Since a few decades ago, the cold-formed steel industry has developed a press-forming procedure to bend trapezoidal commercial steel sheeting into an arched shape. The main quality of these arches is to be self-supporting, ...

    Estudio del comportamiento mecánico de vigas de hormigón armado reforzadas a flexión y a cortante con materiales compuestos de matriz cementítica 

    Escrig Pérez, Christian (Date of defense: 2015-10-02)

    The global tendency to apply sustainability criteria in most of productive fields, as well as, the limited durability and the pathologies that suffer the reinforced concrete elements, are aspects that directly affect the ...

    Estudio numérico y experimental de la interacción entre la chapa de acero y el hormigón para la mejora resistente de las losas mixtas frente al deslizamiento longitudinal. 

    Ferrer Ballester, Miquel (Date of defense: 2005-11-10)

    El fallo resistente de las losas mixtas se produce generalmente por el deslizamiento longitudinal entre la chapa nervada de acero y el hormigón. La dificultad de diseño de chapas para losas mixtas reside en asegurar su ...

    Evaluación del daño por impacto en laminados de material compuesto mediante la respuesta dinámica 

    Pérez Martínez, M. (Marco) (Date of defense: 2012-02-06)

    Composite laminates offer decisive advantages compared to more traditional materials, especially in structural applications where weight is a design-limiting factor. However, they have also shown a susceptibility to impact ...

    Finite element modeling of delamination in advanced composite beams and plates using one- and two-dimensional finite elements based on the refined zigzag theory 

    Eijo, A. (Ariel) (Date of defense: 2014-09-25)

    Although laminated materials have been used for decades, their employment has increased nowadays in the last years as a result of the gained confidence of the industry on these materials. This has provided the scientific ...

    La curva híbrida de riesgo : análisis retrospectivo y prospectivo del riesgo por fenómenos naturales 

    Velásquez Villada, César Augusto (Date of defense: 2016-02-01)

    The natural hazard risk is a contingent liability and, thus, a sovereign risk for national governments and, therefore, it is important to assess properly the potential losses in order to design suitable policies and ...

    Metodología para la modelación, cálculo y calibración de parámetros de la amenaza sísmica para la evaluación probabilista del riesgo 

    Bernal Granados, Gabriel Andrés (Date of defense: 2014-11-09)

    In the assessment of seismic risk, hazard is one of its main components, given that, from a probabilistic perspective, provides the annual rates of exceedance of the intensities of strong motion in the site or region of ...

    Modelación probabilista de pérdidas económicas por sismo para la estimación de la vulnerabilidad fiscal del estado y la gestión financiera del riesgo soberano 

    Marulanda Fraume, Mabel Cristina (Date of defense: 2013-04-25)

    El riesgo sísmico y en general los desastres futuros que puede sufrir una ciudad, una región o un país significan una obligación o pasivo contingente no explícito que puede afectar, desde el punto de vista macroeconómico, ...

    Modelado de multifractura discreta en materiales quasi-frágiles 

    Lafontaine, Nelson M. (Date of defense: 2016-01-18)

    The stated goal of this work is to develop a numerical explicit finite element method able to effectively address the strain localization process, discrete fracture and fragmentation process in quasi-brittle materials, ...

    Modelización numérica del comportamiento constitutivo del daño local y global y su correlación con la evolución de las frecuencias naturales en estructuras de hormigón reforzado 

    Paredes López, Jairo-Andrés (Date of defense: 2013-11-11)

    Esta tesis surge de la necesidad de establecer un método racional y práctico para identificar, a través del cambio de las frecuencias naturales , el daño en estructuras de hormigón armado. Por lo que se desarrolla un nuevo ...

    Modelo constitutivo para tejido óseo humano : propiedades mecánicas del hueso cortical de costilla 

    Velázquez Ameijide, Juan (Date of defense: 2015-03-23)

    This dissertation deals with obtaining the mechanical properties of the cortical bone of the human ribs. One hundred one samples from 76 donors were tested for this study. The number of tested samples significantly ...

    Multifield-based modeling of material failure in high performance reinforced cementitious composites 

    Mora, D. F. (Diego Fernando) (Date of defense: 2013-04-26)

    Cementitious materials such as mortar or concrete are brittle and have an inherent weakness in resisting tensile stresses. The addition of discontinuous fibers to such matrices leads to a dramatic improvement in their ...

    Multiscale numerical modelling of microstructured reinforced composites 

    Otero Gruer, Fermin (Date of defense: 2016-02-09)

    Most of the existing materials around us can be considered composite materials, since they are composed by several phases or components at certain spatial scale. The physical and chemical properties of composites, as occurs ...