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Browsing by Author "García Andrés, Francesc Xavier"

Now showing items 1-7 of 7

Caracterización estructural de vértebras humanas a partir de tomografías axiales computarizadas

Gandía Vañó, Blai (Universitat Politècnica de València, 2021-07-26)

[ES] En este TFG se va a desarrollar un procedimiento automático para extraer las frecuencias naturales y modos de vibración de vértebras humanas a partir de imágenes médicas utilizando el Cartesian grid finite element ...
Cálculo 3D de la potencia acústica radiada por una rueda ferroviaria a partir de la respuesta temporal con efectos giroscópicos y comportamiento no lineal

García-Andrés, Francesc Xavier; Denia, F. D.; Martínez Casas, José; Baeza González, Luis Miguel (International Center for Numerical Methods in Engineering (CIMNE), 2017-07-05)

[ES] El objetivo de este trabajo es el desarrollo de un modelo de radiación acústica para una rueda de tren a partir de su respuesta temporal, calculada con un modelo dinámico que considera la rotación y sus efectos ...
Development of innovative methodologies to reduce railway rolling noise through Genetic Algorithm-based shape optimization techniques

Garcia Andrés, Xavier (Universitat Politècnica de València, 2021-03-15)

[ES] El ruido de rodadura es un fenómeno producido debido a la interacción entre la rueda y el carril e inducido por las pequeñas irregularidades existentes en la superficie de ambos. Dichas irregularidades, conocidas como ...
Nonlinear dispersive waves in repulsive lattices

Mehrem, Ahmed; Jimenez, Noe; Salmerón-Contreras, L. J.; García-Andrés, Francesc Xavier; García-Raffi, L. M.; Picó Vila, Rubén; Sánchez Morcillo, Víctor José (American Physical Society, 2017)

[EN] The propagation of nonlinear waves in a lattice of repelling particles is studied theoretically and experimentally. A simple experimental setup is proposed, consisting of an array of coupled magnetic dipoles. By driving ...
Optimized perforation schemes in railway wheels towards acoustic radiation mitigation

Gutiérrez-Gil, Jorge; García-Andrés, Francesc Xavier; Martínez Casas, José; Nadal, Enrique; Denia Guzmán, Francisco David (2020-08-01)

[EN] Rolling noise emitted by railway wheels is a problem that affects human health and limits the expansion of the railway network. It is caused by the wheel vibration due to the wheelrail contact force, and it is ...
Second harmonic propagation in Coupled Oscillators

Mehrem, Ahmed; Sánchez Morcillo, Víctor José; Jimenez, Noe; Salmerón Contreras, Luis José; García-Andrés, Francesc Xavier; Picó Vila, Rubén; García-Raffi, L. M. (Universidade do Porto, 2016-06-15)

[EN] In this work, we studied numerically, analytically and experimentally the nonlinear dynamics for a chain of magnates. Propagation the second harmonic depends on the medium parameters and the excitation signal (amplitude ...
Wheel shape optimization approaches to reduce railway rolling noise

García-Andrés, Francesc Xavier; Gutiérrez-Gil, Jorge; Martínez Casas, José; Denia, F. D. (Springer-Verlag, 2020-11)

[EN] A wheel shape optimization of a railway wheel cross section by means of Genetic Algorithms (GAs) is presented with the aim of minimizing rolling noise radiation. Two different approaches have been implemented with ...