Now showing items 1-20 of 33

    • A new approach to MGT-thermoviscoelasticity 

      Conti, Monica; Pata, Vittorino; Pellicer Sabadí, Marta; Quintanilla de Latorre, Ramón (American Institute of Mathematical Sciences, 2021-04-06)
      Article
      Restricted access - publisher's policy
      In this paper we discuss some thermoelastic and thermoviscoelastic models obtained from the Gurtin theory, based on the invariance of the entropy under time reversal. We derive differential systems where the temperature ...
    • A problem with viscoelastic mixtures: numerical analysis and computational experiments 

      Fernández, José Ramón; Masid, Maria; Magaña Nieto, Antonio; Quintanilla de Latorre, Ramón (2019-12-06)
      Article
      Open Access
      In this paper, we study, from the numerical point of view, a dynamic problem involving a mixture of two viscoelastic solids. The mechanical problem is written as a system of two coupled partial differential equations. Its ...
    • A simple microstructural viscoelastic model for flowing foams 

      Ibáñez, Rubén; Scheuer, Adrien; Abisset-Chavanne, Emmanuelle; Chinesta, Francisco; Huerta, Antonio; Keunings, Roland (2019-03)
      Article
      Open Access
      The numerical modelling of forming processes involving the flow of foams requires taking into account the different problem scales. Thus, in industrial applications a macroscopic approach is suitable, whereas the macroscopic ...
    • An a priori error analysis of poro-thermoviscoelastic problems 

      Bazarra, Noelia; Fernández, Jose R.; Quintanilla de Latorre, Ramón (Elsevier, 2020-08-15)
      Article
      Restricted access - publisher's policy
      In this paper, we study, from the numerical point of view, a dynamic one-dimensional problem arising in thermoelasticity and thermoviscoelasticity of types II and III. Porosity is also included into the models. The generic ...
    • Analysis of the mock-up of a reactor containment building: comparison with experimental results 

      Jiménez Reyes, Sergio; Cornejo Velázquez, Alejandro; Barbu, Lucia Gratiela; Oller Martínez, Sergio Horacio; Barbat Barbat, Horia Alejandro (2020-04)
      Article
      Restricted access - publisher's policy
      The results of a predictive analysis of the mock-up of a reactor containment building, based on computer numerical simulation, are presented in this paper and compared with the results obtained in the context of the VeRCoRs ...
    • Application d’une Méthode de Balance Harmonique aux Jonctions Elastomères 

      Nieto Ferro, Alex (Universitat Politècnica de Catalunya, 2009-09-23)
      Master thesis (pre-Bologna period)
      Restricted access - author's decision
      La méthode de Balance Harmonique est une méthode fréquentielle de calcul de solutions périodiques de systèmes dynamiques non-linéaires. Cette méthode est aujourd’hui bien maîtrisée pour des modèles phénoménologiques à ...
    • Aproximació numèrica de problemes d'interacció fluid-estructura amb fluids viscoelàstics 

      Cattoni Correa, Domingo Eugenio (Universitat Politècnica de Catalunya, 2019-09-27)
      Master thesis
      Open Access
      El problema d'interacció fluid-estructura és un tema clàssic en enginyeria, amb aplicacions tant diverses com l'aerodinàmica de ponts o el flux en conductes deformables. Un exemple d'aquest segon grup és el de flux de sang ...
    • Challenges posed by computational modelling and nonlinear analysis of complex historical masonry structures 

      Pelà, Luca; Saloustros, Savvas; Roca Fabregat, Pedro (Centro Internacional de Métodos Numéricos en Ingeniería (CIMNE), 2019)
      Conference report
      Restricted access - publisher's policy
      This study analyses some of the most common challenges encountered in numerical modelling and nonlinear analysis of complex historical masonry structures of the built cultural heritage. The research highlights the need for ...
    • Computation of forces from deformed visco-elastic biological tissues 

      Muñoz Romero, José; Amat Olóndriz, David; Conte, Vito (2018-04-01)
      Article
      Open Access
      We present a least-squares based inverse analysis of visco-elastic biological tissues. The proposed method computes the set of contractile forces (dipoles) at the cell boundaries that induce the observed and quantified ...
    • Determinación del orden fraccional en el modelo Zener para caracterizar los efectos biomecánicos ocasionados por el flujo sanguíneo 

      Palomares, J.E.; Rodríguez, M.; Castro, J.G. (Universitat Politècnica de Catalunya. CIMNE, 2017)
      Article
      Open Access
      El propósito principal de la presente publicación consiste en la determinación adecuada del orden fraccional en el modelo viscoelástico de Zener y el análisis de las implicaciones que se derivan de la precisión en la ...
    • Effect of temperature and frequency of dynamic loading in the viscoelastic properties of aluminium alloy 7075-T6 

      Rojas Gregorio, José Ignacio; Aguiar, Albert; Crespo Artiaga, Daniel (2011-06-24)
      Article
      Open Access
      The viscoelastic response of a material offers an alternative method for analyzing its microstructure, phase transformations and fatigue behaviour. In this work, the viscoelastic properties of commercial aluminium alloy ...
    • Effects of time delays and viscoelastic parameters in oscillatory response cell monolayers 

      Borja, Cristian; Moral, Elena; Muñoz Romero, José (Elsevier, 2021-01-15)
      Part of book or chapter of book
      Open Access
      Oscillatory response of cellular tissues has been observed in multipleembryogenetic developmental stages. The source of these oscillations hasbeen attributed to imbalance of instabilities in the chemo-mechanical sig-nalling ...
    • Estudio de las propiedades viscoelásticas en aceros amorfos 

      Cozar Rabaza, Raul (Universitat Politècnica de Catalunya, 2010-05-27)
      Bachelor thesis
      Open Access
      Los vidrios metálicos son un nuevo tipo de material descubierto en 1960 con aplicaciones potenciales muy interesantes. Su estructura a nivel atómico, similar a la de un líquido, se obtiene mediante un proceso de enfriamiento ...
    • Exponential decay in one-dimensional Type II/III thermoelasticity with two porosities 

      Magaña Nieto, Antonio; Quintanilla de Latorre, Ramón (2020-07-30)
      Article
      Open Access
      In this paper we consider the theory of thermoelasticity with a double porosity structure in the context of the Green-Naghdi types II and III heat conduction models. For the type II, the problem is given by four hyperbolic ...
    • Exponential stability in type II thermoviscoelasticity with voids 

      Miranville, Alain; Quintanilla de Latorre, Ramón (2020-04)
      Article
      Restricted access - publisher's policy
      In this paper we consider the one-dimensional type II thermoviscoelastic theory with voids. We prove that generically we have exponential stability of the solutions. This is a striking fact if one compares it with the ...
    • Identification des paramètres de différents modèles de comportement élastoviscoplastique 

      Alsina Viladecans, Mireia (Universitat Politècnica de Catalunya / Institut National des Sciences Appliquées de Lyon, 2013)
      Bachelor thesis
      Restricted access - author's decision
      Covenantee:   Institut national des sciences appliquées de Lyon
      Ce stage a pour but l’identification des paramètres de différents modèles de comportement mécanique pour l’alliage d’aluminium utilisé pour le carter-cylindre. Lors de la fabrication et l’assemblage du carter-cylindre ainsi ...
    • Investigation of the viscoelastic flow behavior of polymer melts 

      Monserrate Sabadell, Víctor (2013-07)
      Master thesis (pre-Bologna period)
      Restricted access - author's decision
      Covenantee:   Hochschule Darmstadt
      This bachelor thesis does a theoretic approach to the basics of Viscosity, Fluids, Plastics, Polymers, Rheology and Rheometry before explaining, defining and studying the results of the carried out measurement ...
    • Mechanical oscillations in biological tissues as a result of delayed rest-length changes 

      Muñoz Romero, José; Dingle, Monica; Wenzel, Manuel (American Institute of Physics (AIP), 2018-11-26)
      Article
      Open Access
      Oscillatory behavior in tissue biology is ubiquitous and may be observed in the form of either chemical or mechanical signals. We present here and solve a mechanical cell model that exhibits oscillations emerging from ...
    • Mechanochemical pattern formation in simple models of active viscoelastic fluids and solids 

      Alonso Muñoz, Sergio; Radszuweit, Markus; Engel, Harald; Baer, Markus (Institute of Physics (IOP), 2017-11-01)
      Article
      Open Access
      The cytoskeleton of the organism Physarum polycephalum is a prominent example of a complex active viscoelastic material wherein stresses induce flows along the organism as a result of the action of molecular motors and ...
    • Modeling the porous and viscous responses of human brain tissue behavior 

      Comellas Sanfeliu, Ester; Budday, Silvia; Pelteret, Jean-Paul; Holzapfel, Gerhard A.; Steinmann, Paul (2020-09-01)
      Article
      Restricted access - publisher's policy
      The biomechanical characterization of human brain tissue and the development of appropriate mechanical models is crucial to provide realistic computational predictions that can assist personalized treatment of neurological ...