Exploració per tema "Viscoelasticity"

Ara es mostren els items 1-20 de 56

    • A new approach to MGT-thermoviscoelasticity 

      Conti, Monica; Pata, Vittorino; Pellicer Sabadí, Marta; Quintanilla de Latorre, Ramón (American Institute of Mathematical Sciences, 2021-10)
      Article
      Accés obert
      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 (2021)
      Article
      Accés obert
      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 second gradient theory of thermoelasticity 

      Iesan, Dorin; Quintanilla de Latorre, Ramón (Springer Nature, 2023-12)
      Article
      Accés restringit per política de l'editorial
      This paper is concerned with a linear theory of thermoelasticity without energy dissipation, where the second gradient of displacement and the second gradient of the thermal displacement are included in the set of independent ...

    • A simple microstructural viscoelastic model for flowing foams 

      Ibáñez, Rubén; Scheuer, Adrien; Abisset-Chavanne, Emmanuelle; Chinesta, Francisco; Huerta, Antonio; Keunings, Roland (2019-03)
      Article
      Accés obert
      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 ...

    • A strain rate dependent model with decreasing Young’s Modulus for cortical human bone 

      Sánchez Molina, David; García Vilana, Silvia; Llumà Fuentes, Jordi (Institute of Physics (IOP), 2023-05-11)
      Article
      Accés restringit per política de l'editorial
      This research studies the dynamic behavior of human cortical bone specimens and investigates their mechanical properties using uniaxial tensile tests. The main experimental finding is that in the range of strain rate ...

    • An a priori error analysis of poro-thermoviscoelastic problems 

      Bazarra, Noelia; Fernández, Jose R.; Quintanilla de Latorre, Ramón (Elsevier, 2020-08-15)
      Article
      Accés obert
      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 ...

    • An invariant based transversely-isotropic constitutive model for unidirectional fibre reinforced composites considering the matrix viscous effects 

      Gerbaud, Paul William; Otero Gruer, Fermín Enrique; Bussetta, Philippe; Camanho, Pedro P. (2019-11)
      Article
      Accés obert
      Fibres Reinforced Polymers (FRPs) are found in several applications in aeronautics, space and in the automotive industry. These applications are exposed to loading conditions, including impact, which results in a complex ...

    • 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
      Accés obert
      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)
      Projecte/Treball Final de Carrera
      Accés restringit per decisió de l'autor
      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)
      Projecte Final de Màster Oficial
      Accés obert
      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 ...

    • Arrow-shaped elasto-inertial rotating waves 

      López Alonso, José Manuel; Altmeyer, Sebastian Andreas (Royal Society, 2023-05-01)
      Article
      Accés obert
      We present direct numerical simulations of the Taylor–Couette flow of a dilute polymer solution when only the inner cylinder rotates and the curvature of the system is moderate (¿=0.77 ). The finitely extensible nonlinear ...

    • 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)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      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
      Accés obert
      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 ...

    • Computational study of brain tissue response to mechanical loading 

      Moure Alassio, Florencia Ines (Universitat Politècnica de Catalunya, 2023-10-10)
      Projecte Final de Màster Oficial
      Accés obert
      As the era of frequent human space travel nears, it becomes imperative to understand the brain’s reaction to microgravity conditions. This research delves into the intricate mechanics of brain tissue, focusing specifically ...

    • Coupled solid-fluid response of deep tunnels excavated in saturated rock masses with a time-dependent plastic behaviour 

      Song, Fei; Rodríguez Dono, Alfonso; Olivella Pastallé, Sebastià; Gens Solé, Antonio (2021-12)
      Article
      Accés obert
      This article provides a general numerical approach for modelling the response of deep tunnels excavated in saturated time-dependent plastic rock masses, considering a coupled solid-fluid interaction and time-dependent ...

    • Decay estimate of the viscoelastic plate with type II heat conduction in the whole space 

      Quintanilla de Latorre, Ramón; Ueda, Yoshihiro (Elsevier, 2024-01)
      Article
      Accés restringit per política de l'editorial
      This paper is concerning the problem determined by a viscoelastic plate when the heat is determined by the type II Green–Naghdi theory. Meanwhile the usual modeling is the combination of a conservative equation for the ...

    • 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
      Accés obert
      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
      Accés obert
      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)
      Capítol de llibre
      Accés obert
      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)
      Treball Final de Grau
      Accés obert
      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 ...