Programa de Doctorat en Anàlisi Estructural: Recent submissions
Now showing items 21-40 of 99
Efficient computational mesoscale modeling of concrete under cyclic loading
Concrete is a complex material and can be modeled on various spatial and temporal scales. While simulations on coarse scales are practical for engineering applications, a deeper understanding of the material is gained on ...
Numerical analysis of particle-laden flows with the finite element method
In this work we study the numerical simulation of particle-laden fluids, with a focus on Newtonian fluids and spherical, rigid particles. We are thus dealing with a multi-phase (more precisely, a multi-component) problem, ...
Multiscale multiphysics simulation in composite materials
The improvements in terms of computational power provides the capability to analyze with more detail the materials behavior. On one hand, going deeper in the materials to study an increasingly smaller dimension and capture ...
Computational multiscale modeling of fracture and its model order reduction
This thesis focuses on the numerical modeling of fracture and its propagation in heterogeneous materials by means of hierarchical multiscale models based on the FE2 method, addressing at the same time, the problem of the ...
Discrete volume method : a variational approach for brittle fracture
This thesis presents a proposal to simulate mechanics and dynamics of brittle fracture. A variational formulation is used to describe Lagrangian mechanics, by minimizing the difference between potential and kinetic energy ...
Numerical simulation of aeroacoustics using the variational multiscale method : application to the problem of human phonation
The solution of the human phonation problem applying computational mechanics is covered by several research branches, such as Computational Fluid Dynamics (CFD), biomechanics or acoustics, among others. In the present ...
Adaptive mesh simulations of compressible flows using stabilized formulations
This thesis investigates numerical methods that approximate the solution of compressible flow equations. The first part of the thesis is committed to studying the Variational Multi-Scale (VMS) finite element approximation ...
Numerical analysis of railway ballast behaviour using the Discrete Element Method.
The development of high-speed train lines has increased significantly during the last twenty-five years, leading to more demanding loads in railway infrastructures. Most of these infrastructures were constructed using ...
Development of new computational methods for fluid-structure interaction analysis of multi-fractured media
The objective of this thesis is the derivation and implementation of a robust Finite Element formulation for the solution of solid-pore fluid coupled problems in multi-fractured porous media. A coupled displacement-pore ...
Characterization of the longitudinal shear strength in composite slabs
The concrete-steel composite slabs show a complex structural characterization due to the different behaviours at the two materials. The materials are exposed to different deformations, large deflections and complex stresses ...
Numerical modelling of the growth and remodelling phenomena in biological tissues
Living biological tissues are complex structures that have the capacity of evolving in response to external loads and environmental stimuli. The adequate modelling of soft biological tissue behaviour is a key issue in ...
Multi-scale topological design of structural materials : an integrated approach
The present dissertation aims at addressing multiscale topology optimization problems. For this purpose, the concept of topology derivative in conjunction with the computational homogenization method is considered. In ...
Mixed finite element formulations for strain localization and failure in plasticity
Strain localization and quasi-brittle failure in frictional-cohesive materials is still an open and challenging problem in computational mechanics. Owing to its complexity and the significant implications on numerous ...
A machine learning based methodology for anomaly detection in dam behaviour
Dam behaviour is difficult to predict with high accuracy. Numerical models for structural calculation solve the equations of continuum mechanics, but are subject to considerable uncertainty as to the characterisation of ...
Mejora del diagnóstico y de la hemodinámica en la revascularización carotídea : aplicación de la dinámica de fluidos computacional mediante el OpenFOAM® y otras herramientas de libre distribución
Stroke is a major cause of death and disability in Spain and in the Western world. It is often caused by an accumulation of atherosclerotic plaques on the walls of carotid arteries. Carotid revascularization may be the ...
Numerical techniques for non-linear analysis of structures combining discrete element and finite element methods
This works encompasses a broad review of the basic aspects of the Discrete Element Method for its application to general granular material handling problems with special emphasis on the topics of particle-structure interaction ...
Modelo constitutivo para tejido óseo humano : propiedades mecánicas del hueso cortical de costilla
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 ...
Análisis beneficio costo probabilista de medidas de mitigación del riesgo por sismo
In the situation to make decisions about which risk mitigation measures -RMM- to implement and the performance level required, arises the need for a quantitative analysis of benefits that may be obtained as well as the ...
Structural performance of FRP-concrete hybrid beams with flexible shear connection
La sostenibilidad de los edificios y de las infraestructuras públicas es un tema de importancia reciente puesto en discusión por la comunidad de ingeniería. La necesidad de diseñar estructuras con bajos requerimientos de ...
Nuevo concepto de puente de vigas hinchables ligero, modular y portátil
We propose to develop, build and validate a new Concept of Bridge composed of Inflatable Beams, Lightweight, Modular and Portable (PVH-LMP) for surface transport vehicles, which uses pressurized air-filled beams made of ...
