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Listar por autor "Fuenmayor Fernández, Francisco Javier"

Mostrando ítems 1-20 de 91

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2D contact smooth formulation based on the mortar method

Tur Valiente, Manuel; Giner Maravilla, Eugenio; Fuenmayor Fernández, Francisco Javier; Wriggers, P. (Elsevier, 2012)

In this paper, we apply a smoothing technique to solve contact problems using a segment-to-segment formulation based on the mortar method. In contact smoothing the C 0 finite element description of the geometry is replaced ...
3D analysis of the influence of specimen dimensions on fretting stresses

Tur Valiente, Manuel; Fuenmayor Fernández, Francisco-Javier; J.J. Ródenas; Giner Maravilla, Eugenio (Elsevier, 2003)

[EN] In this paper, the contact conditions and stresses that arise in a fretting test have been analyzed by means of a three-dimensional finite element model of the contact between a sphere and a flat surface. An h-adaptive ...
A 3D absolute nodal coordinate finite element model to compute the initial configuration of a railway catenary

Tur Valiente, Manuel; García, E.; Baeza González, Luis Miguel; Fuenmayor Fernández, Francisco Javier (Elsevier, 2014-07-15)

In this paper we propose a method of finding the initial equilibrium configuration of cable structures discretized by finite elements applied to the shape-finding of the railway overhead system. Absolute nodal coordinate ...
A finite element approach for the acoustic modelling of perforated dissipative mufflers with non-homogeneous properties

Antebas, A.; Denia Guzmán, Francisco David; Pedrosa Sanchez, Ana Maria; Fuenmayor Fernández, Francisco Javier (Elsevier, 2013-04)

[EN] In this work, a finite element approach is presented for modeling sound propagation in perforated dissipative mufflers with non-homogeneous properties. The spatial variations of the acoustic properties can arise, ...
A hierarchical h adaptivity methodology based on element subdivision

Ródenas, J.J.; Albelda Vitoria, José; Tur Valiente, Manuel; Fuenmayor Fernández, Francisco-Javier (Universidad Industrial de Santander, 2017)

[EN] This paper presents a hierarchical h adaptive methodology for Finite Element Analysis based on the hierarchical relations between parent and child elements that come out if these elements are geometrically similar. ...
A modal coordinate catenary model for the real-time simulations of the pantograph-catenary dynamic interaction

Gregori Verdú, Santiago; Tur Valiente, Manuel; Pedrosa Sanchez, Ana Maria; Tarancón Caro, José Enrique; Fuenmayor Fernández, Francisco-Javier (Elsevier, 2019-09-15)

[EN] The computational cost required to simulate the pantograph-catenary dynamic interaction can be a limiting factor in certain applications. Specifically, for Hardware-in-the-Loop (HIL) simulations, real-time capabilities ...
A numerical methodology to assess the quality of the design velocity field computation methods in shape sensitivity analysis

Ródenas, J.J.; Fuenmayor, F.J.; Tarancón, J. E. (John Wiley & Sons, 2004)

[EN] The velocity field in shape sensitivity analysis is not uniquely defined although it must meet numerous theoretical and practical criteria. These practical criteria can be used to compare the existing velocity field ...
A recovery-explicit error estimator in energy norm for linear elasticity

Nadal Soriano, Enrique; Díez, P.; Ródenas, J.J.; Tur Valiente, Manuel; Fuenmayor Fernández, Francisco Javier (Elsevier, 2015-04-15)

[EN] Significant research effort has been devoted to produce one-sided error estimates for Finite Element Analyses, in particular to provide upper bounds of the actual error. Typically, this has been achieved using ...
A recovery-type error estimator for the extended finite element method based on singular+smooth stress field splitting

Ródenas, J.J.; González-Estrada, O.A.; Taráncón, J.E.; Fuenmayor, F.J. (John Wiley & Sons, 2008)

[EN] A new stress recovery procedure that provides accurate estimations of the discretization error for linear elastic fracture mechanic problems analyzed with the extended finite element method (XFEM) is presented. The ...
A separated representation of an error indicator for the mesh refinement process under the proper generalized decomposition framework

Nadal, E.; Leygue, A.; Chinesta, F.; Beringhier, M.; Ródenas, J.J.; Fuenmayor Fernández, Francisco Javier (Springer Verlag (Germany), 2015-02)

[EN] Today industries do not only require fast simulation techniques but also verification techniques for the simulations. The proper generalized decomposition (PGD) has been situated as a suitable tool for fast simulation ...
Accurate recovery-based error upper bounds for the extended finite element framework

Ródenas, J.J.; Gonzalez-Estrada, O.A.; Díez, P.; Fuenmayor Fernández, Francisco-Javier (Elsevier, 2010)

[EN] This paper introduces a recovery-type error estimator yielding upper bounds of the error in energy norm for linear elastic fracture mechanics problems solved using the extended finite element method (XFEM) The paper ...
Ajuste de funciones de respuesta en frecuencia de un componente aeronaútico. Automatización con MatLab

Martín Pérez, Carlos (Universitat Politècnica de València, 2015-04-24)

El objeto principal del presente TFG es el de llevar a cabo un ajuste matemático de las funciones de respuesta en frecuencia (FRF) de un componente aeronáutico con la herramienta informática MatLab. Para poder llevar a ...
An approach to geometric optimisation of railway catenaries

Gregori Verdú, Santiago; Tur Valiente, Manuel; Nadal, Enrique; Fuenmayor Fernández, Francisco-Javier (Taylor & Francis, 2017)

[EN] The quality of current collection becomes a limiting factor when the aim is to increase the speed of the present railway systems. In this work an attempt is made to improve current collection quality optimising catenary ...
An extension of shape sensitivity analysis to an immersed boundary method based on Cartesian grids

Marco, Onofre; Ródenas, Juan José; Fuenmayor Fernández, Francisco-Javier; Tur Valiente, Manuel (Springer-Verlag, 2018)

[EN] Gradient-based shape optimization processes of mechanical components require the gradients (sensitivity) of the magnitudes of interest to be calculated with sufficient accuracy. The aim of this study was to develop ...
Analysis of the overlap section in a high-speed railway catenary by means of numerical simulations

Gregori Verdú, Santiago; Gil-Romero, Jaime; Tur Valiente, Manuel; Tarancón Caro, José Enrique; Fuenmayor Fernández, Francisco-Javier (Elsevier, 2020-10-15)

[EN] The transition between catenary tensioning sections is accomplished smoothly by overlapping a number of spans in each catenary section. This work presents an analysis of the overlap section in a high-speed railway ...
Analytical model of the pantograph¿catenary dynamic interaction and comparison with numerical simulations

Gil-Romero, Jaime; Gregori Verdú, Santiago; Tur Valiente, Manuel; Fuenmayor Fernández, Francisco-Javier (Taylor & Francis, 2022-01-02)

[EN] Catenaries are large cable structures which transmit electric current to trains through sliding contact with a pantograph. The finite element method is widely used to model this dynamic interaction problem and obtain ...
Análisis del comportamiento dinámico de un banco de ensayos HIL de pantógrafos con catenarias virtuales

Roca Castro, Juan Ramón (Universitat Politècnica de València, 2022-04-04)

[ES] La Universidad Politécnica de Valencia desarrolló un banco de pruebas para pantógrafos con el uso de catenarias virtuales. El mismo consiste en una estructura en forma de pórtico con un sistema de excitación vertical ...
Análisis experimental de vibraciones de una pala de Turbohélice

Soler Miralles, Rodolfo (Universitat Politècnica de València, 2014-11-19)

El objetivo del presente proyecto es proporcionar unos resultados experimentales de vibraciones de una pala de turbohélice para su posterior análisis modal. Estos resultados serán utilizados en futuros proyectos para un ...
Aplicación de la norma EN 15461 al cálculo del amortiguamiento de la vía

Ferrairó Bañuls, Adrián (Universitat Politècnica de València, 2022-09-01)

[ES] Una de las medidas más importantes para la caracterización de la vía desde el punto de vista vibratorio, es la que conduce a la obtención del Track Decay Rate (TDR, también conocido como tasa de amortiguación de la ...
APLICACIÓN DE TÉCNICAS DE AJUSTE A LA ESTIMACIÓN DE PARÁMETROS MODALES

Suárez Lacueva, Felipe (Universitat Politècnica de València, 2011-11-08)

El objetivo de la presente tesina de máster es la implementación de técnicas de ajuste mediante MathCAD para estimar los parámetros modales, que describen el comportamiento dinámico de un sistema vibratorio, a partir de ...