Browsing by Subject "Elasticitat"

Now showing items 1-20 of 93

    • 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
      Open Access
      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 data-driven learning method for constitutive modeling: application to vascular hyperelastic soft tissues 

      González Ibáñez, David; García González, Alberto; Chinesta Soria, Francisco; Cueto Prendes, Elias (Multidisciplinary Digital Publishing Institute (MDPI), 2020-05-01)
      Article
      Open Access
      We address the problem of machine learning of constitutive laws when large experimental deviations are present. This is particularly important in soft living tissue modeling, for instance, where large patient-dependent ...

    • A finite element approach to the simulation of hydraulic fractures with lag 

      Hunsweck, Michael J.; Shen, Yongxing; Lew, Adrian J. (2013)
      Article
      Open Access
      We presented a finite-element-based algorithm to simulate plane-strain, straight hydraulic fractures in an impermeable elastic medium. The algorithm acCOllllts for the nonlinear coupling between the fluid pressure and the ...

    • A locking-free face-centred finite volume (FCFV) method for linear elastostatics 

      Sevilla Cárdenas, Rubén; Giacomini, Matteo; Huerta, Antonio (2019-02-01)
      Article
      Open Access
      A face-centred finite volume (FCFV) method is proposed for linear elastostatic problems. The FCFV is a mixed hybrid formulation, featuring a system of first-order equations, that defines the unknowns on the faces (edges ...

    • A multi-scale theoretical model for soft materials 

      Marti Gallego, Enric (Universitat Politècnica de Catalunya, 2018-09-27)
      Bachelor thesis
      Open Access
      Many manufactured materials, such as rubbers, are made of several constituents with very different mechanical stiffness. Interestingly, the overall mechanical response of the material exhibits a very particular response ...

    • 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 ...

    • A superconvergent hybridisable discontinuous Galerkin method for linear elasticity 

      Sevilla Cárdenas, Rubén; Giacomini, Matteo; Karkoulias, Alexandros; Huerta, Antonio (John Wiley & sons, 2018-10-12)
      Article
      Open Access
      The first superconvergent hybridisable discontinuous Galerkin method for linear elastic problems capable of using the same degree of approximation for both the primal and mixed variables is presented. The key feature of ...

    • Adaptividad para problemas de elasticidad lineal en 3D 

      Prada, Claudio; Saliba, Roberto; Vénere, Marcelo J. (Centro Internacional de Métodos Numéricos en Ingeniería, 1997)
      Article
      Open Access
      En este trabajo se presenta un método adaptivo para resolver problemas de elasticidad lineal tridimensional por el método de elementos finitos incluyendo varias experiencias, tanto en la implementación como en la utilización ...

    • An anisotropic microsphere-based approach for fiber orientation adaptation in soft tissue 

      Sáez Viñas, Pablo; Pena, Estefanía; Doblaré, Manuel; Martínez, Miguel Ángel (2011)
      Article
      Open Access
      Evolutionary processes in biological tissue, such as adaptation or remodeling, represent an enterprising area of research. In this paper, we present a multiscale model for the remodeling of fibered structures, such as ...

    • An atomistic-based foliation model for multilayer graphene materials and nanotubes 

      Ghosh, Susanta; Arroyo Balaguer, Marino (2013-01)
      Article
      Open Access
      We present a three-dimensional continuum model for layered crystalline materials made out of weakly interacting two-dimensional crystalline sheets. We specialize the model to multilayer graphene materials, including ...

    • An entropy-stable updated reference Lagrangian smoothed particle hydrodynamics algorithm for thermo-elasticity and thermo-visco-plasticity 

      Lee, Chun Hean; Refachinho de Campos, Paulo Roberto; Gil, Antonio; Giacomini, Matteo; Bonet Carbonell, Javier (Springer, 2023-04-03)
      Article
      Open Access
      This paper introduces a novel upwind Updated Reference Lagrangian Smoothed Particle Hydrodynamics (SPH) algorithm for the numerical simulation of large strain thermo-elasticity and thermo-visco-plasticity. The deformation ...

    • An immersed boundary hierarchical B-spline method for flexoelectricity 

      Codony Gisbert, David; Marco Alacid, Onofre; Fernández Méndez, Sonia; Arias Vicente, Irene (2019-09-01)
      Article
      Open Access
      This paper develops a computational framework with unfitted meshes to solve linear piezoelectricity and flexoelectricity electromechanical boundary value problems including strain gradient elasticity at infinitesimal ...

    • An upwind cell centred Total Lagrangian finite volume algorithm for nearly incompressible explicit fast solid dynamic applications 

      Haider, Jibran; Lee, Chun Hean; Gil, Antonio; Huerta, Antonio; Bonet Carbonell, Javier (2018-10-01)
      Article
      Open Access
      The paper presents a new computational framework for the numerical simulation of fast large strain solid dynamics, with particular emphasis on the treatment of near incompressibility. A complete set of first order hyperbolic ...

    • Analysis of high-order interpolation schemes for solving linear problems in unstructured meshes using the finite volume method 

      Castrillo Green, Pablo; Schillaci, Eugenio; Rigola Serrano, Joaquim (Scipedia, 2022)
      Conference report
      Open Access
      Finite-volume strategies in fluid-structure interaction problems would be of crucialvimportance in many engineering applications such as in the analysis of reed valves in reciprocating compressors. The efficient implementation ...

    • Analysis of the simplified structure of a rocket in initial phases and in flight 

      Caus Solé, Jordi (Universitat Politècnica de Catalunya, 2022-10-13)
      Bachelor thesis
      Restricted access - author's decision
      In this report, a structural analysis of a rocket is performed. Its aim it to base the analysis on finite elements, where transient states and vibrations will be taken into account, in order to obtain nodal displacements ...

    • Anisotropic tissue elasticity in human lumbar vertebra, by means of a coupled ultrasound-micromechanics approach 

      Malandrino, Andrea; Fritsch, Andreas; Lahayne, Olaf; Kropik, Karl; Redl, Heinz; Noailly, Jérôme; Lacroix, Damien Jerome; Hellmich, Christian (2012-07-01)
      Article
      Restricted access - publisher's policy
      The extremely fi ne structure of vertebral cortex challenges reliable determination of the tissue's anisotropic elasticity, which is important for the spine's load carrying patterns often causing pain in patients. As a ...

    • Anisotropy can imply exponential decay in micropolar elasticity 

      Fernández García, José Ramon; Quintanilla de Latorre, Ramón (Elsevier, 2023-08)
      Article
      Open Access
      In this note, two problems arisen in micropolar elasticity are considered from the analytical point of view. Following the Kelvin–Voigt theory of micropolar viscoelasticity, two dissipative mechanisms are imposed: in the ...

    • Aplicació del Material Point Method (MPM) a la deformació d'objectes 

      Martin Garcia, Pol (Universitat Politècnica de Catalunya, 2020-01-23)
      Bachelor thesis
      Open Access
      Una de les branques més importants dins de l'animació per computador és la simulació física del comportament dels objectes d'una escena. Generalment es busca obtenir resultats que visualment es comportin com els objectes ...

    • Avoiding early failures in conjugate cam mechanism by means of different design strategies 

      Català Calderon, Pau; Santos López, M. Antonia de los; Veciana Fontanet, Joaquim Maria; Cardona Foix, Salvador (2016-01-01)
      Article
      Restricted access - publisher's policy
      To solve the indetermination of forces existing in a form-closed cam mechanism formed by conjugate cams, where the contact between the cams and the follower rollers is constantly ensured by only the geometry of the elements, ...

    • Bottoming bending process assisted by electroplasticity 

      Sánchez Egea, Antonio José; González Rojas, Hernán Alberto; Celentano, Diego Javier; Travieso Rodríguez, José Antonio; Llumà Fuentes, Jordi (EUETIB, 2013-12)
      Conference report
      Open Access
      Este estudio reporta la influencia de los efectos atérmicos de la electroplasticidad en el proceso de doblado por estampa. Se fabrica un generador que generar pulsos de 300A y un ancho de 50μs. Los materiales estudiados ...