Exploració per tema "Dynamics"

Ara es mostren els items 1-20 de 154

    • A 2.5D coupled FEM-BEM-MFS methodology for longitudinally invariant soil-structure interaction problems 

      Liravi, Hassan; Arcos Villamarín, Robert; Ghangale, Dhananjay; Noori, Behshad; Romeu Garbí, Jordi (Elsevier, 2021-04)
      Article
      Accés obert
      This paper is concerned with a new prediction methodology for longitudinally invariant soil-structure interaction problems in elastodynamics. The method uses the finite-element method to model the structure, the boundary-element ...

    • A direct elimination algorithm for quasi-static and dynamic contact problems 

      Capua, Daniel di; Agelet de Saracibar Bosch, Carlos (2015-01-01)
      Article
      Accés obert
      This paper deals with the computational modeling and numerical simulation of contact problems at Unite deformations using the Finite element method. Quasi-static and dynamic problems are considered and two particular ...

    • A filtered kinetic energy preserving finite volumes scheme for compressible flows 

      Baez Vidal, Aleix; Lehmkuhl Barba, Oriol; Pérez Segarra, Carlos David; Oliva Llena, Asensio (2012)
      Text en actes de congrés
      Accés obert
      The Kinetic Energy Preserving Scheme (KEP) for compressible flows has been shown to solve 1-D shock waves without smearing them. The method does not add numerical diffusion to solutions but, as a counterpart, it needs ...

    • A new approach to the planetary N-Body Problem 

      Chierchia, Luigi (2012-03-27)
      Audiovisual
      Accés obert

    • A new approach to the planetary N-Body Problem 

      Chierchia, Luigi (2012-03-26)
      Audiovisual
      Accés obert

    • A new averaging-extrapolation method for quasi-periodic frequency refinement 

      Villanueva Castelltort, Jordi (2022-10)
      Article
      Accés restringit per política de l'editorial
      In a recent work, we presented an averaging-extrapolation approach for the numerical computa- tion of frequencies and amplitudes of a discrete-time quasi-periodic signal. This approach assumes analyticity of the signal and ...

    • A new multisymplectic unified formalism for second order classical field theories 

      Prieto Martínez, Pedro Daniel; Román Roy, Narciso (American Institute of Mathematical Sciences, 2015-06-01)
      Article
      Accés obert
      We present a new multisymplectic framework for second-order classical field theories which is based on an extension of the unified LagrangianHamiltonian formalism to these kinds of systems. This model provides a straightforward ...

    • A new phylogenetic reconstruction method based on invariants 

      Casanellas Rius, Marta; Fernández Sánchez, Jesús (2005)
      Article
      Accés obert
      An attempt to use phylogenetic invariants for tree reconstruction was made at the end of the 80s and the beginning of the 90s by several authors (the initial idea due to Lake [Lake, 1987] and Cavender and Felsenstein [Cavender ...

    • A structured study on the dynamic bifurcation behavior of a continuous ethanol fermentor 

      Ojeda Toro, Juan Carlos; Dobrosz-Gómez, Izabela; Gómez-García, Miguel Ángel; Prat Farran, Joana d'Arc; Massana Hugas, Immaculada (2021-05)
      Article
      Accés obert
      The oscillatory behavior of a continuous fermentation reactor, in the high feed sugar concentration region (200 g/L), is analyzed using the dynamic bifurcation theory. The mathematical model was solved using the arc-length ...

    • About the oscillatory possibilities of the dynamical systems 

      Herrero Simon, Ramon; Pi Vila, Francesc; Rius, J; Orriols Tubella, Gaspar (2009-11)
      Report de recerca
      Accés obert
      This paper may be ultimately described as an attempt to make feasible the evolutionary emergence of novelty in a supposedly deterministic world whose behavior is associated with that of the mathematical dynamical systems. ...

    • AC/DC systems interconnected by power converters: Modelling and practical aspects 

      Arévalo Soler, Josep; Sánchez Sánchez, Enric; Gomis Bellmunt, Oriol; Prieto Araujo, Eduardo (2021)
      Text en actes de congrés
      Accés obert
      The paper addresses the modelling of AC/DC systems interconnected by power converters. A non-linear model including three AC subsystems and two multiterminal DC systems interconnected by power converters are modelled in ...

    • Advances in dynamics, control, monitoring and applications: proceedings on the workshop on control, dynamics, monitoring and applications 

      Pozo Montero, Francesc; Zapateiro, Mauricio (Universitat Politècnica de Catalunya. Departament de Matemàtica Aplicada III (MA3), 2011-02)
      Llibre
      Accés restringit per política de l'editorial

    • Ageing of an oscillator due to frequency switching 

      Bonet Revés, Carles; Jeffrey, Mike R.; Martín de la Torre, Pablo; Olm Miras, Josep Maria (2021-11-01)
      Article
      Accés obert
      If an oscillator is driven by a force that switches between two frequencies, the dynamics it exhibits depends on the precise manner of switching. Here we take a one-dimensional oscillator and consider scenarios in which ...

    • An efficient experimental methodology for the assessment of the dynamic behaviour of resilient elements 

      Reina, Salvatore; Arcos Villamarín, Robert; Clot Razquin, Arnau; Romeu Garbí, Jordi (Multidisciplinary Digital Publishing Institute (MDPI), 2020-06-27)
      Article
      Accés obert
      The assessment of the dynamic behaviour of resilient elements can be performed using the indirect method as described in the standard ISO 10846-3. This paper presents a methodology for control the error on the estimation ...

    • Analizing exact controllability of l-order linear ystems 

      García Planas, María Isabel (WSEAS Press, 2017-05)
      Article
      Accés obert
      In recent years there has been growing interest in the descriptive analysis of l -order time invariant linear dynamical system x l = A l system x l = A l where A i are square complex matrices and x i denotes the i-th ...

    • Anàlisi del comportament de la dinàmica no lineal del ritme cardíac 

      Jové Sabaté, Jordi (Universitat Politècnica de Catalunya, 2005-06-22)
      Projecte/Treball Final de Carrera
      Accés obert
      L’anàlisi de la variabilitat del ritme cardíac (VRC) o Heart Rate Variability (HRV) proporciona informació important sobre el funcionament del sistema cardiovascular. L’objectiu d’aquest treball és millorar el coneixement ...

    • Anàlisi del comportament dinàmic d'un aerogenerador flotant offshore 

      Perelló Noceras, Joan Antoni (Universitat Politècnica de Catalunya, 2012-06-29)
      Tesina
      Accés obert
      [ANGLÈS] The overall trend of the wind energy industry to the off shore sector requires the study of new technologies for exploiting these renewable energy sources. The installation of wind farms in deeper water to improve ...

    • Application of the forces' method in dynamic systems 

      Bendito Pérez, Enrique; Carmona Mejías, Ángeles; Encinas Bachiller, Andrés Marcos; Gesto Beiroa, José Manuel (2007-10-11)
      Article
      Accés obert
      We present here some applications of the Forces's method in dynamic systems. In particular, we consider the problem of the approximation of the trajectories of a conservative system of point masses by means of the minimization ...

    • Applications to celestial mechanics 

      Lanchares Sanchez, Ernesto (Universitat Politècnica de Catalunya, 2022-07)
      Projecte Final de Màster Oficial
      Accés obert
      Recently an asymptotic formula for the distance of the invariant manifolds of L3 in the RCP3BP when the mass parameter tends to zero was proven. In this study we numerically check the formula using high precision routines ...

    • Aprovechamiento de la energía producida en sesiones de spinning 

      Marti Jover, Ignacio (Universitat Politècnica de Catalunya, 2019-10-09)
      Treball Final de Grau
      Accés restringit per decisió de l'autor
      En el presente documento se diseña un sistema de transformación de la energía cinética que se produce durante una sesión de spinning en energía eléctrica, proporcionando así una alternativa respetuosa con el medio ambiente ...