Now showing items 1-20 of 614

  • 3D finite element computations for viscous aerodynamic flows around automobiles 

    Fischer, Thomas B.; Miquel Canet, Juan; Fruitós Bickham, Óscar Alejandro; Oñate Ibáñez de Navarra, Eugenio (1994-05)
    External research report
    Open Access
  • 3D printed scaled setup for smoke transport analysis in a subterranean passenger platform 

    Flores-Herrera, L.A.; Rivera-Blas, R.; Pérez-Cruz, J. Humberto; Muñoz-Aguirre, N.; Torres-Martínez, C.; Carbajal-Romero, M.F.; Vargas-Carmona, R.; Funes-Lora, M. (Universitat Politècnica de Catalunya. CIMNE, 2019)
    Article
    Open Access
    In this work, the study of smoke fire transportation inside of a subway passenger platform is presented. The study includes a set of numerical simulations to observe the behavior of the smoke inside the platform. Two smoke ...
  • A 4-node thin shell element based on co-rotational for laminated composite structures 

    Qiao, S.J.; Gao, H.S.; Hua, L.; Wang, F.S. (Universitat Politècnica de Catalunya. CIMNE, 2018)
    Article
    Open Access
    The finite formulation of the 4-node thin shell element based on Co-rotational (CR) and Timoshenko's theory was presented for the analysis of laminated composite structures. Based on the Timoshenko's theory the present ...
  • Abolladura de estructuras de barras de sección tipo doble-T 

    Cacho-Pérez, M.; Lorenzana Ibán, A. (Universitat Politècnica de Catalunya. CIMNE, 2017)
    Article
    Open Access
    En este trabajo se expone una metodología de varias etapas para determinar, con mínimo esfuerzo computacional el factor de carga crítico que produce el fenómeno de inestabilidad local de abolladura de las paredes de los ...
  • Abolladura de estructuras de barras de sección tipo doble-T 

    Cacho-Pérez, M.; Lorenzana Ibán, A. (Universitat Politècnica de Catalunya. CIMNE, 2017)
    Article
    Open Access
    En este trabajo se expone una metodología de varias etapas para determinar, con mínimo esfuerzo computacional el factor de carga crítico que produce el fenómeno de inestabilidad local de abolladura de las paredes de los ...
  • A branch-and-cut algorithm for the multidepot rural postman problem 

    Fernández Aréizaga, Elena; Laporte, Gilbert; Rodríguez Pereira, Jessica (2018-03)
    Article
    Open Access
    This paper considers the Multidepot Rural Postman Problem, an extension of the classical Rural Postman Problem in which there are several depots instead of only one. The aim is to construct a minimum cost set of routes ...
  • A case study for the assessment of a dynamic passenger ride sharing mobility service 

    Linares Herreros, María Paz; Montero Mercadé, Lídia; Barceló Bugeda, Jaime; Casanovas Garcia, Josep; Carmona Bautista, Carlos; Serch, Oriol (2017)
    Conference report
    Restricted access - publisher's policy
    Sustainable mobility is not merely a technological question. While automotive technology will be part of the solution, it will also be combined with a paradigm shift from car ownership to vehicle usage, which itself will ...
  • Accurate recovery-based upper error bounds for the extended finite element framework 

    Ródenas García, Juan José; González Estrada, O. A.; Díez, Pedro; Fuenmayor, F. J. (2010-08-01)
    Article
    Open Access
    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 can ...
  • A combined rh-adaptive scheme based on domain subdivision. Formulation and linear examples 

    Askes, Harm; Rodríguez Ferran, Antonio (Wiley and Sons, 2001-09)
    Article
    Open Access
    An adaptive scheme is proposed in which the domain is split into two subdomains. One subdomain consists of regions where the discretization is refined with an h-adaptive approach, whereas in the other subdomain node ...
  • A comparative study of two compact finite difference methods: standard vs. mimetic 

    Córdova, Luis Joaquin; Rojas, Otilio; Otero Calviño, Beatriz; Castillo, José (Sociedad Venezolana de Métodos Numéricos en Ingeniería, 2014)
    Conference report
    Restricted access - publisher's policy
    In this work, we implement two fourth-order compact finite differences (CFD) methods and use them to model wave propagation on a elastic string. The formulation of the first method employs the standard implicit CFD constructed ...
  • A continuous-discontinous model for softening and cracking based on non-local displacements 

    Tamayo Mas, Elena; Rodríguez Ferran, Antonio (2008)
    Conference report
    Open Access
    A continuous-discontinuous model to simulate numerically an entire failure process is presented. Crack inception and its propagation is modelled by means of a gradient non-local model based on non-local displacements. To ...
  • Adaptive and off-line techniques for non-linear multiscale analysis 

    Zaghi, Stefano; Martínez García, Javier; Rossi, Riccardo; Petracca, Massimo (2018-08-22)
    Article
    Open Access
    This paper presents two procedures, based on the numerical multiscale theory, developed to predict the mechanical non-linear response of composite materials under monotonically increasing loads. Such procedures are designed ...
  • Adaptive reduced basis strategy based on goal oriented error assessment for stochastic problems 

    Florentin, Eric; Díez, Pedro (2012-06)
    Article
    Open Access
    In the framework of stochastic non-intrusive finite element modeling, a common practice is using Monte Carlo simulation. The main drawback of this approach is the computational cost, because it requires computing a large ...
  • Adaptividad tridimensional con mallas no estructuradas 

    Saliba, Roberto; Vénere, Marcelo J.; Feijóo, Raúl A. (Centro Internacional de Métodos Numéricos en Ingeniería, 1997)
    Article
    Open Access
    En el presente trabajo se muestran algunas experiencias realizadas en el área de adaptatividad para problemas tridimensionales. Basados en problemas de elasticidad, se estudiaron dos formas bien diferenciadas de modificar ...
  • A direct elimination algorithm for quasi-static and dynamic contact problems 

    Capua, Daniel di; Agelet de Saracibar Bosch, Carlos (2015-01-01)
    Article
    Open Access
    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 discontinuous galerkin formulation for solid dynamics 

    Peraire Guitart, Jaume; Bonet Carbonell, Javier; Huerta, Antonio; Persson, Per Olof; Vidal Seguí, Yolanda (Omnipress, 2006)
    Lecture
    Open Access
  • Advanced harmonic techniques for solving the transient heat equation 

    Aguado, José Vicente; Huerta, Antonio; Chinesta, Francisco; Cueto Prendes, Elias; Leygue, Adrien (Sociedad Española de Métodos Numéricos en Ingeniería (SEMNI), 2013)
    Conference report
    Restricted access - publisher's policy
    Simulation-based management of processes has always been a big challenge because of the difficulty to merge two apparently opposed idea s: the real time handling demanded by the process, and the traditionally strong ...
  • Advances in the development of the discrete element method for excavation processes 

    Labra, C.; Oñate Ibáñez de Navarra, Eugenio; Rojek, J. (Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE), 2012)
    Book
    Open Access
    This work presents new developments of the discrete element method improving e ciency and accuracy of modelling of rock-like materials, especially in excavation processes.
  • Aerodynamic shape optimization using automatic adaptive remeshing 

    Bugeda Castelltort, Gabriel; Oñate Ibáñez de Navarra, Eugenio; Joannas, D (1993-02)
    External research report
    Open Access
  • A family of iterative methods that uses divided differences of first and second orders 

    Ezquerro, José Antonio; Grau Sánchez, Miguel; Hernández Verón, Miguel Angel; Noguera Batlle, Miquel (2015-11-01)
    Article
    Open Access
    The family of fourth-order Steffensen-type methods proposed by Zheng et al. (Appl. Math. Comput. 217, 9592-9597 (2011)) is extended to solve systems of nonlinear equations. This extension uses multidimensional divided ...