• E. Oñate, F. Zárate, M. Celigueta, J. González, J. Miquel, J. Carbonell, F. Arrufat, S. Latorre, M. Santasusana
    (2017). Research Report, Nº PI416

    Abstract
    In this chapter we present recent advances in the Discrete Element Method (DEM) and in the coupling of the DEM with the Finite Element Method (FEM) for solving a variety of [...]

  • E. Oñate, A. Franci, J. Carbonell
    (2014). Research Report, Nº PI406

    Abstract
    In this chapter we present recent advances in the Discrete Element Method (DEM) and in the coupling of the DEM with the Finite Element Method (FEM) for solving a variety of [...]

  • A. Eijo, E. Oñate, S. Oller
    (2012). Research Report, Nº PI378

    Abstract
    A new bilinear 4-noded quadrilateral element (called QLRZ) for the analysis of composite laminated and sandwich plates/shells based on the refined zigzag theory (RZT) proposed [...]

  • E. Oñate, C. Labra, F. Zárate, J. Rojek
    (2012). Research Report, Nº PI373

    Abstract
    We present a new computational model for predicting the effect of blast loading on structures. The model is based in the adaptive coupling of the finite element method (FEM) [...]

  • E. Oñate
    (2012). Research Report, Nº PI386

    Abstract
    En este trabajo se analizan algunas de las razones que dificultan y favorecen la transferencia de los resultados de la investigación que se desarrolla en entornos científicos [...]

  • F. Salazar, R. Morán, R. Rossi, E. Oñate
    (2011). Research Report, Nº PI369

    Abstract
    Current paper focuses on the analysis of radial gated spillways, which are analyzed by the solution of a numerical model. The Oliana Dam study case is considered and the discharge [...]

  • N. Lafontaine, X. Wang, K. Huang, M. Yuan, E. Oñate
    (2013). Research Report, Nº PI399

    Abstract
    In this work we introduced and implemented the AL method in NOLM program. Basically the actual implementation in NOLM is based in the work proposed by Lam and Morley (1992) [...]

  • E. Oñate
    (2011). Research Report, Nº PI360

    Abstract
    The paper presents an overview of the advances in recent years on the finite element method (FEM) and on particle-based methods for the simulation of industrial metal forming [...]

  • E. Oñate, S. Idelsohn, F. Pin, R. Aubry
    (2004). Research Report, Nº PI243

    Abstract
    We present a general formulation for analysis of fluid-structure interaction problems using the particle finite element method (PFEM). The key feature of the PFEM is the use [...]

  • E. Oñate, A. Franci, J. Carbonell
    (2014). Research Report, Nº PI403

    Abstract
    We present a Lagrangian formulation for coupled thermal analysis of quasi and fully incompressible flows and fluid-structure interaction (FSI) problems that has excellent [...]

  • M. Mier-Torrecilla, S. Idelsohn, E. Oñate
    Int. J. Numer. Meth. Fluids (2010). Vol. 67 (11), pp. 1516-1539

    Abstract
    In this work we extend the Particle Finite Element Method (PFEM) to multi-fluid flow problems with the aim of exploiting the fact that Lagrangian methods are specially well [...]

  • E. Oñate, M. Celigueta, S. Idelsohn, F. Salazar, A. Larese, R. Rossi, B. Suárez, R. Morán
    (2012). Research Report, Nº PI374

    Abstract
    We present some developments in the Particle Finite Element Method (PFEM) for analysis of coupled problems in mechanics involving fluid-soil-structure interaction (FSSI). [...]

  • E. Oñate, F. Flores
    (2003). Research Report, Nº PI241

    Abstract
    A family of rotation-free three node triangular shell elements is presented. The simplest element of the family is based on an assumed constant curvature field expressed in [...]

  • E. Oñate
    (2004). Research Report, Nº PI264

    Abstract
    El artículo revindica el valor de los métodos de cálculo que se enseñan en las Escuelas de Ingeniería, como herramientas indispensables [...]

  • E. Ortega, R. Flores, E. Oñate, C. Sacco, E. González
    (2010). Research Report, Nº PI341

    Abstract
    The design and evaluation of parachute-payload systems is an important field of applications in which numerical analysis tools can make very important contributions. This [...]

  • K. Butler, E. Oñate, R. Rossi, J. Marti, S. Idelsohn
    (2010). Research Report, Nº PI349

    Abstract
    The effects of the thermal properties of three flooring materials on the spread rate of polymer melt over the surface were studied using a model based on the Particle Finite [...]

  • A. Franci, E. Oñate, J. Carbonell
    (2014). Research Report, Nº PI407

    Abstract
    In this work, a unified updated Lagrangian formulation for solving fluid-structure interaction (FSI) problems is derived. The mixed velocity-pressure formulation for hypoelastic [...]

  • E. Oñate, J. Carbonell
    (2013). Research Report, Nº PI393

    Abstract
    We present a mixed velocity-pressure finite element formulation for solving the updated Lagrangian equations for quasi and fully incompressible fluids. Details of the governing [...]

  • F. Salazar, J. Mauro, J. Irazábal, A. Larese, . R. Rossi, E. Oñate, R. Morán, M. Toledo
    (2013). Research Report, Nº PI396

    Abstract
    El Centro Internacional de Métodos Numéricos en Ingeniería (CIMNE) es un centro de investigación dependiente del Gobierno de Cataluña y [...]

  • R. Flores, E. Ortega, E. Oñate
    (2011). Research Report, Nº PI351

    Abstract
    An explicit dynamic structural solver developed at CIMNE for the analysis of parachutes is presented. The canopy fabric has a negligible out-of-plane stiffness, therefore [...]

  • E. Ortega, E. Oñate, S. Idelsohn
    (2011). Research Report, Nº PI368

    Abstract
    An adaptive Finite Point Method (FPM) for solving aeroelastic compressible flow problems is presented. The numerical methodology is based on a meshless upwind-biased discretization [...]

  • E. Oñate, J. Miquel, F. Zárate
    (2005). Research Report, Nº PI269

    Abstract
    A stabilized finite element method (FEM) for the multidimensional steady state advection-diffusion-absorption equation is presented. The stabilized formulation is based on [...]

  • (2011). Research Report, Nº PI357

    Abstract
    We present some developments in the Particle Finite Element Method (PFEM) for analysis of complex coupled problems in mechanics involving fluid-soil-structure interaction [...]

  • J. Irazábal, F. Salazar, E. Oñate
    (2012). Research Report, Nº PI390

    Abstract
    The analysis of landslides in reservoirs is particularly interesting because the oscillation of the water surface elevation (especially rapid drawdowns) can foster their occurrence. [...]

  • (2011). Research Report, Nº PI358

    Abstract
    When people talks about research, development and technology transfer (RTD in short) and commercial industrial activities, it is quite usual to mix up objectives, resources [...]

  • E. Oñate, A. Franci, J. Carbonell
    (2014). Research Report, Nº PI406

    Abstract
    We present a generalized Lagrangian formulation for analysis of industrial forming processes involving thermally coupled interactions between deformable continua. The governing [...]

  • E. Oñate, M. Celigueta, S. Latorre, G. Casas, R. Rossi, J. Rojek
    (2014). Research Report, Nº PI405

    Abstract
    We present a Lagrangian numerical technique for the analysis of flows incorporating physical particles of different sizes. The numerical approach is based on the Particle [...]

  • J. Mora, R. Otín, P. Dadvand, E. Escolano, M. Pasenau, E. Oñate
    (2005). Research Report, Nº PI273

    Abstract
    Computational electromagnetism requires a wide range of numerical methods depending on the application, the topology of the geometry, the frequency and the quality of the [...]

  • M. Font, E. Oñate, J. Carbonell
    (2011). Research Report, Nº PI366

    Abstract
    El deflectòmetre d’impacte segurament és l’aparell més utilitzat per realitzar assaigs no destructius dels ferms. Els enginyers utilitzen [...]

  • E. Oñate, J. Marcipar, J. Piazzese
    (2003). Research Report, Nº PI238

    Abstract
    La eclosión de las Tecnologías de la Información y las Comunicaciones (TIC), y en particular de Internet, ha facilitado el desarrollo de sistemas que, [...]

  • A. Llanos, E. Oñate, F. Zárate
    (2013). Research Report, Nº PI398

    Abstract
    Actualmente existen programas de MAT-fem para calcular vigas de material homogéneo, según la teoría de Euler-Bernoulli o de Timoshenko. El objetivo de [...]

  • M. Masó, E. Oñate, F. Zarate
    (2013). Research Report, Nº PI397

    Abstract
    This final studies work target is to contribute two new beam theories to MAT-fem [6], an educational developed program by CIMNE [5]. Until now the MAT-fem Beams program only [...]

  • B. Boroomand, A. Tabatabaie, E. Oñate
    (2004). Research Report, Nº PI249

    Abstract
    A stabilized version of the Finite Point Method (FPM) is presented. A source of instability due to the evaluation of the base function using a least square procedure is discussed. [...]

  • (2011). Research Report, Nº PI359

    Abstract
    Se presentan unas reflexiones sobre el ciclo que las ideas recorren desde que surgen en un entorno universitario hasta que se transforman en un producto industrial. Se concretan [...]

  • Research Report (2017). PI417

    Abstract
    We present an overview of the model implemented by the International Centre for Numerical Methods in Engineering (CIMNE, www.cimne.com ) for  the generation of scientific [...]

  • E. Oñate, B. Suárez, F. Salazar, R. Morán, M. Celigueta, S. Latorre
    (2011). Research Report, Nº PI365

    Abstract
    Se describen los conceptos básicos del método de partículas y elementos finitos (PFEM) para análisis de flujos de fluidos en lámina libre [...]

  • Personal Repository of Francisco Zarate (1999). 9

    Abstract
    The paper describes how finite element method and the finite volume method can be successfully combined to derive two new families of thin plate and shell triangles with translational [...]

  • E. Oñate, J. Marti, P. Ryzhakov, R. Rossi, S. Idelsohn
    (2013). Research Report, Nº PI395

    Abstract
    A computational procedure for analysis of the melting, burning and flame spread of polymers under fire conditions is presented. The method, termed Particle Finite Element [...]

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