COLLECTIONS

JOURNALS

Documents published in Scipedia

• Combination of 3D solid finite elements with rotation-free beam elements for non-linear analysis of fiber reinforced polymer rebars

  F. Zarate, T. Villette, X. Martinez, F. Rastellini Canela, D. Cendón, C. Andrade, E. Oñate

  Rev. int. métodos numér. cálc. diseño ing. (2023). Vol. 39, (2), 12

  
  

  Abstract

  We present a combination of three dimensional (3D) solid elements and rotation-free beam elements for non-linear analysis of fiber-reinforced polymer (FRP) of rebars. The matrix material is modelled by 3D solid elements while the fibers are modelled with rotation-free beam elements. The absence of rotation variables in the beam elements allows the straightforward coupling of 3D solid and beam elements using a formulation with displacement nodal degrees of freedom only. Both solid and beam elements are formulated in an updated Lagrangian description. The behavior of the matrix and the fiber material are modelled with an elastic-damage model. The efficiency and accuracy of the combined 3D-beam element formulation are verified in examples of application to the analysis of FRP rebars up to fracture in axial, bending and shear tests for which experimental results are available.

  Abstract
  We present a combination of three dimensional (3D) solid elements and rotation-free beam elements for non-linear analysis of fiber-reinforced polymer (FRP) of rebars. The [...]

  • 15
  •  read

• Application of the Discrete Elements Method for the simulation of a beam-column connection based on a self-centering system.

  J. Álvarez, S. Gallegos, R. Cordero, A. Ramirez, F. Zarate, S. Diaz

  Rev. int. métodos numér. cálc. diseño ing. (2023). Vol. 39, (2), 23

  
  

  Abstract

  At present, the beam-column connection system through a self-centering post-tensioned connection is currently an alternative to improve the seismic behavior in reinforced concrete buildings; by allowing its elements to have a linear behavior (no damage) in the face of displacements produced by seismic actions. This paper deals with the numerical modeling of the seismic behavior for a self-centering connection based on the Discrete Element Method (MED) is presented, with the aim of validating the hysterical response of the numerical model with an experimental test of the literature. The results demonstrated the horizontal distortions in the column, which are the product of the numerical simulation of the model subjected to a load that increases over time with 4 different stiffness coefficients. In addition, the hysteretic graph is presented as a result of the numerical simulation of the model, with an adequate stiffness coefficient and normal damping, subject to a cyclic load that is reversed as a function of time. The movement of the connection is controlled by the horizontal distortions of the column, achieving an approximate reproduction of the hysterical behavior expected in this type of connection. With the results shown, a simple bilinear hysteresis law is proposed, which allows its simplified use for its application in the modeling of reinforced concrete buildings with self-centering connections.

  Abstract
  At present, the beam-column connection system through a self-centering post-tensioned connection is currently an alternative to improve the seismic behavior in reinforced [...]

  • 79
  •  read

• Explicit time integration scheme with large time steps for first order transient problems using finite increment calculus (preprint)

  E. Oñate, I. de-Pouplana, F. Zarate

  Computer Methods in Applied Mechanics and Engineering (2022). Available online 14 July, 115332

  
  

  Abstract

  We present an explicit integration scheme for solving the transient heat conduction equation that allows larger time steps than the standard forward Euler scheme. The derivation starts from a higher order form of the governing differential equations of the problem obtained using a Finite Increment Calculus (FIC) procedure. The efficiency of the new explicit integration scheme in terms of substantial gains in the time step size versus the forward Euler scheme is verified in the solution of transient heat conduction problems in one and two dimensions. The method is readily extendible to other problems in mechanics governed by the first order transient differential equation.

  Abstract
  We present an explicit integration scheme for solving the transient heat conduction equation that allows larger time steps than the standard forward Euler scheme. The derivation [...]

  • 0
  •  read

• Combination of the finite element method and particle-based methods for predicting the failure of reinforced concrete structures under extreme water forces

  E. Oñate, A. Cornejo Velázquez, F. Zarate, K. Kashiyama, A. Franci

  Engineering Structures (2022). Vol. 251, Part B, 113510

  
  

  Abstract

  We present a combination of the Finite Element Method (FEM), the Particle Finite Element Method (PFEM), and the Discrete Element Method (DEM) for modeling and analyzing the failure of reinforced concrete structures under impulsive wave forces originating from free-surface flows in critical water hazards. The free-surface water flow is modeled with the PFEM, while the structural behavior and the fractures induced by the water forces in the structure are modeled with a coupled FEM–DEM technique. The concrete material behavior is simulated with a standard isotropic damage model. The reinforcing bars are modeled by a rule of mixtures procedure, for simplicity. The possibilities of the new integrated PDFEM approach for predicting the evolution of free-surface tsunami-type waves and their devastating effect on constructions are validated with experiments on the failure of reinforced concrete plates under large impacting waves, performed in a laboratory facility in Japan.

  Abstract
  We present a combination of the Finite Element Method (FEM), the Particle Finite Element Method (PFEM), and the Discrete Element Method (DEM) for modeling and analyzing the [...]

  • 4
  •  read

• Structural analysis of a railway bridge using the FEM-DEM technique

  F. Zarate, J. Cuellar, M. SANTANA, J. MATA SAAVEDRA

  Rev. int. métodos numér. cálc. diseño ing. (2022). Vol. 38, (1), 5

  
  

  Abstract

  The objectives of this work are focused on giving an answer to the problems presented in the operation of a railway bridge, using the FEM-DEM numerical technique considering static and dynamic loads. The purpose is to find out the existing breakage mechanisms in the bridge. From a social aspect, there is concern about the possible collapse of the bridge, with the corresponding economic loss and eventually human losses; therefore, the interest and social involvement of the study has repercussions not only on the repair mechanisms that can be adopted but also on the possible revision of the calculation and design aspects in this type of works. The FEM-DEM technique developed by Zárate et al. [1,2] has been validated in various laboratory tests [3-5]. Due to the characteristics of the problem, the technique used is an ideal tool to study the structural behaviour of the bridge from a static and dynamic point of view. Considering the reinforcing steel in the bridge is fundamental to carry out the structural analysis, which is why the implementation of this type of reinforcement in the FEM-DEM formulation is described. The paper is organized as follows. First, the problems found in the civil works under study are described. Subsequently, a small sketch of the FEM-DEM technique is made, and the inclusion of reinforcing steel is formulated. After that, the different results of the static and dynamic studies carried out are presented.

  Abstract
  The objectives of this work are focused on giving an answer to the problems presented in the operation of a railway bridge, using the FEM-DEM numerical technique considering [...]

  • 222
  •  read

• A fully Lagrangian formulation for fluid-structure interaction between free-surface flows and multi-fracturing solids and structures

  A. Cornejo Velázquez, E. Oñate, F. Zarate

  Monograph CIMNE (2021). M192

  
  

  Abstract

  It is well known that in civil engineering structures are designed so that they remain, whenever possible, in an elastic regime and with their mechanical properties intact. The truth is that in reality there are uncertainties either in the execution of the work (geometric errors or material quality) or during its subsequent use (loads not contemplated or its value has been estimated incorrectly) that can lead to the collapse of the structure. This is why the study of the failure of structures is inherently interesting and, once is known, its design can be improved to be the less catastrophic as possible or to dissipate the maximum energy before collapsing. Another area of application of fracture mechanics is that of processes of which interest lies in the breakage or cracking of a medium. Within the mining engineering we can enumerate several processes of this nature, namely: hydraulic fracture processes or fracking, blasting for tunnels, explosion of slopes in open pit mines, among others. Equally relevant is the analysis of structural failures due to natural disasters, such as large avenues or even tsunamis impacting protection structures such as walls or dikes. In this work numerous implementations and studies have been made in relation to the mentioned processes. That said, the objective of this work is to develop an advanced numerical method capable of simulating multi-fracture processes in materials and structures. The general approach of the proposed method can be seen in various publications made by the author and directors of this work. This methodology is meant to cover the maximum spectrum of engineering applications possible. For this purpose, a coupled formulation of the Finite Element Method (FEM) and the Discrete Element Method (DEM) is used, which employs an isotropic damage constitutive model to simulate the initial degradation of the material and, once the strength of the material has been completely exhausted, those Finite Element (FE) are removed from the FEM mesh and a set of Discrete Element (DE) are generated at its nodes. In addition to ensure the conservation of the mass of the system, these DE prevent the indentation between the fissure planes thanks to the frictional repulsive forces calculated by the DEM, if any. Additionally, in this work it has been studied how the proposed coupled method named FEM-DEM together with the smoothing of stresses based on the super-convergent patch is able to obtain reasonably meshindependent results but, as one can imagine, the crack width is directly related to the size of the elements that have been removed. This favours the inclusion of an adaptive remeshing technique that will refine the mesh where it is required (according to the Hessian of a nodal indicator of interest) thus improving the discretization quality of the crack obtained and thereby optimizing the simulation cost. In this sense, the procedures for mapping nodal and internal variables as well as the calculation of the nodal variable of interest will be discussed. As far as the studies of natural disasters are concerned, especially those related to free-surface water flows such as tsunamis, one more level of coupling between the aforementioned method FEM-DEM and one Computational Fluid Dynamics (CFD) formulation commonly referred to as Particle Finite Element Method (PFEM) has been implemented. With this strong coupled formulation, many cases of wave impacts and fluid flows have been simulated against solid structures such as walls and dikes, among others.

  Abstract
  It is well known that in civil engineering structures are designed so that they remain, whenever possible, in an elastic regime and with their mechanical properties intact. [...]

  • 22
  •  read

• Combination of an adaptive remeshing technique with a coupled FEM-DEM approach for analysis of crack propagation problems (preprint)

  A. Cornejo, V. Mataix, F. Zarate, E. Oñate

  Computational Particle Mechanics (2020). Vol. 7, pp. 735–752, doi: 10.1007/s40571-019-00306-4

  
  

  Abstract

  This paper presents an enhanced coupled approach between the Finite Element Method (FEM) and the Discrete Element Method (DEM) in which an adaptative remeshing technique has been implemented. The remeshing technique is based on the computation of the Hessian of a selected nodal variable, i.e. the mesh is refined where the curvature of the variable field is greater. Once the Hessian is known, a metric tensor is defined node-wise that serves as input data for the remesher (MmgTools) that creates a new mesh. After remeshing, the mapping of the internal variables and the nodal values is performed and a regeneration of the discrete elements on the crack faces of the new mesh is carried out. Several examples of fracturing problems using the enhanced FEM-DEM formulation are presented. Accurate results in comparison with analytical and experimental solutions are obtained.

  Abstract
  This paper presents an enhanced coupled approach between the Finite Element Method (FEM) and the Discrete Element Method (DEM) in which an adaptative remeshing technique has [...]

  • 124
  •  read

• Applying multi-objective robust design optimization procedure to the route planning of a commercial aircraft

  J. Pons Prats, G. Bugeda, F. Zarate, E. Oñate, J. Periaux

  (2018). Computational Methods and Models for Transport. Computational Methods in Applied Sciences. Diez, P. Neittaanmäki, P., Periaux, J., Tuovinen, T., Bräysy, O. (Eds.), Vol. 45, pp. 147-167, Springer, Cham

  
  

  Abstract

  Aircraft emission targets worldwide and their climatic effects have put pressure in government agencies, aircraft manufacturers and airlines to reduce water vapour, carbon dioxide (CO2CO2) and oxides of nitrogen (NOxNOx) resulting from aircraft emissions. The difficulty of reducing emissions including water vapor, carbon dioxide (CO2CO2) and oxides of nitrogen (NOxNOx) is mainly due to the fact that a commercial aircraft is usually designed for a particular optimal cruise altitude but may be requested or required to operate and deviate at different altitudes and speeds to archive a desired or commanded flight plan, resulting in increased emissions. This is a multi- disciplinary problem with multiple trade-offs such as optimizing engine efficiency, minimizing fuel burnt and emissions while maintaining prescribed aircraft trajectories, altitude profiles and air safety. There are possible attempts to solve such problems by designing new wing/aircraft shape, new efficient engine, ATM technology, or modifying the aircraft flight plan. Based on the rough data provided by an air carrier company, who was willing to assess the methodology, this paper will present the coupling of an advanced optimization technique with mathematical models and algorithms for aircraft emission, and fuel burnt reduction through flight plan optimization. Two different approaches are presented; the first one describes a deterministic optimization of the flight plan and altitude profile in order to reduce the fuel consumption while reducing time and distance. The second approach presents the robust design optimization of the previous case considering uncertainties on several parameters. Numerical results will show that the methods are able to capture a set of useful trade-offs solutions between aircraft range and fuel consumption, as well as fuel consumption and flight time.

  Abstract
  Aircraft emission targets worldwide and their climatic effects have put pressure in government agencies, aircraft manufacturers and airlines to reduce water vapour, carbon [...]

  • 15
  •  read

• Simulación de problemas de desgaste, en la interacción herramienta de corte terreno, empleando el método de los elementos discretos

  C. Recarey Morfa, E. Oñate, J. Canet, J. Rojek, F. Zarate, S. Burrel

  Ingeniería Civil (2006). Vol. 141, pp. 19-34

  
  

  Abstract

  Se presenta un modelo numérico que emplea elementos discretos esféricos o también denominados elementos distintos. Este modelo se aplica en la simulación de problemas de desgaste. El movimiento de elementos esféricos se describe por medio de las ecuaciones de Newton-Euler. Se emplea en la formulación una integración explícita, la cual, brinda una buena eficiencia computacional. Los elementos esféricos interactúan recíprocamente entre sí a través de las fuerzas de contacto. El esquema de búsqueda de contacto es muy eficaz, y está basado en las estructuras de oct-tree. El modelo constitutivo de contacto presenta una singularidad muy especial, ya que puede simular las fuerzas de cohesión que permiten modelar la fractura y descohesión de los materiales. El estudio de desgastes se realiza a partir de una formulación termo­acoplada que se aplica a nivel experimental, o escala reducida, y además in-situ o escala real.

  Abstract
  Se presenta un modelo numérico que emplea elementos discretos esféricos o también denominados elementos distintos. Este modelo se aplica en la simulación [...]

  • 11
  •  read

• Caltep programa para el cálculo transitorio de la ecacuación de Poisson

  F. Zarate, E. Oñate

  (1993). Research Report, Nº PI27

  
  

  Abstract

  Esta publicación explica la utilización de un programa de elementos finitos que permita resolver la ecuación de Poisson transitoria, que rige una gran cantidad de problemas físicos como son la transición del calor a través de diversos medios, el flujo de un líquido a través de un medio permeable, problemas de magnetismo, etc. En la publicación describe las etapas que intervienen en un programa de elementos finitos para cálculo de la ecuación de Poisson transitoria incidiendo principalmente en la metodología general de la programación de las diferentes subrutinas, así como en su aplicación a varios problemas. En la última parte de esta publicación se presentan diversos ejemplos de aplicación del programa, así como un listado completo del mismo, una descripción de sus variables más significativas y las instrucciones para la entrada de datos.   

  Abstract
  Esta publicación explica la utilización de un programa de elementos finitos que permita resolver la ecuación de Poisson transitoria, que rige una gran [...]

  • 42
  •  read

Articles (Documents not available in Scipedia)

• Una nueva estrategia para el estudio de la vulnerabilidad de edificios expuestos a explosiones a cielo abierto

  F Zárate, VE Cardoso, A Barbat, S Botello

  Revista Internacional de Métodos Numéricos para Cálculo y Diseño en ..., 2017

• A coupled FEM-DEM procedure for predicting blasting operations in tunnels

  F Zarate, JM Gonzalez, J Miquel, R Lohner, E Oñate

  Papers Repository of the International Center for Numerical Methods in ..., 2017

• Application of an enhanced discrete element method to oil and gas drilling processes

  PA Ubach, F Arrufat, L Ring, R Gandikota, F Zárate, E Oñate

  Computational particle mechanics 3 (1), 29-41, 2016

• Application of an enhanced discrete element method to oil and gas drilling processes

  Pere Andreu Ubach, Ferran Arrufat, Lev Ring, Raju Gandikota, Francisco Zárate, Eugenio Oñate

  Computational particle mechanics

• Una nueva estrategia para el estudio de la vulnerabilidad de edificios expuestos a explosiones a cielo abierto

  F Zárate, VE Cardoso, A Barbat, S Botello

  Revista Internacional de Métodos Numéricos para Cálculo y Diseño en Ingeniería

• A Particle-Discrete-Finite Element Method for Analysis of Particulate Flows and Their Interaction with Structures

  E Oñate, MA Celigueta, G Casas, R Rossi, F Zarate, SR Idelsohn

  13th US National Congress on Computational Mechanics, 2015

• A simple FEM–DEM technique for fracture prediction in materials and structures

  F Zárate, E Oñate

  Computational particle mechanics 2 (3), 301-314, 2015

• A local constitutive model for the discrete element method. Application to geomaterials and concrete

  E Oñate, F Zárate, J Miquel, M Santasusana, MA Celigueta, F Arrufat, ...

  Computational particle mechanics 2 (2), 139-160, 2015

• A simple FEM–DEM technique for fracture prediction in materials and structures

  Francisco Zárate, Eugenio Oñate

  Computational particle mechanics

• A local constitutive model for the discrete element method. Application to geomaterials and concrete

  E. Oñate, F. Zárate, J. Miquel, M. Santasusana, M. A. Celigueta, F. Arrufat, R. Gandikota, K. Valiullin, L. Ring

  Computational particle mechanics

• Advances in the Discrete Element Method for drilling mechanics problems

  E Oñate Ibáñez de Navarra, F Arrufat Garcia, JF Zárate Araiza, ...

  DEM 6: 6th International Conference on Discrete Element Methods and Related ..., 2013

• Modelling and analysis of Cement and Concrete Samples under Mechanical Testing with Discrete Element Method

  E Onate, F Zárate, F Arrufat, J Miquel, PA Ubach

  International Report, CIMNE, 2013

• Modelling and simulation of the effect of blast loading on structures using an adaptive blending of discrete and finite element methods

  C Labra, E Oňate, F Zárate, J Rojek

  Particle-based methods II: fundamentals and applications: proceedings of the ..., 2013

• Robust Design Optimization applied to aeronautics combining stochastic calculus with evolutionary algoritms

  J Pons-Prats, G Bugeda, F Zarate, E Onate

  REVISTA INTERNACIONAL DE METODOS NUMERICOS PARA CALCULO Y DISENO EN ..., 2012

• Optimización robusta en aplicaciones aeronáuticas con la combinación de cálculo estocástico y algoritmos evolutivos

  J Pons-Prats, G Bugeda, F Zárate, E Oñate

  Revista Internacional de Métodos Numéricos para Cálculo y Diseño en ..., 2012

• Modelling and simulation of the effect of blast loading on structures using an adaptive blending of discrete and finite element methods

  E Oñate, C Labra, F Zárate, J Rojek

  Risk Analysis, Dam Safety, Dam Security and Critical Infrastructure ..., 2012

• Extended rotation-free shell triangles with transverse shear deformation effects

  F Zárate, E Oñate

  Computational Mechanics 49 (4), 487-503, 2012

• Robust Design Optimization applied to aeronautics combining stochastic calculus with evolutionary algoritms

  J Pons-Prats, G Bugeda, F Zarate, E Onate

  REVISTA INTERNACIONAL DE METODOS NUMERICOS PARA CALCULO Y DISENO EN INGENIERIA

• Optimización robusta en aplicaciones aeronáuticas con la combinación de cálculo estocástico y algoritmos evolutivos

  J Pons-Prats, Gabriel Bugeda, Francisco Zárate, E Oñate

  Revista Internacional de Métodos Numéricos para Cálculo y Diseño en Ingeniería

• Extended rotation-free shell triangles with transverse shear deformation effects

  Francisco Zárate, Eugenio Oñate

  Computational Mechanics

• Stochastic and Robust design procedures applied to the optimization with uncertainties

  J Pons Prats, G Bugeda Castelltort, JF Zárate Araiza, ...

  EUROGEN 2011. Evolutionary methods for design, optimization and control ..., 2011

• Contribution to the Definition of Non Deterministic Robust Optimization in Aeronautics Accounting with Variable Uncertainties

  JP Prats, G Bugeda, JFZ Araiza

  International Center for Numerical Methods in Engineering, 2011

• Robust design optimization in aeronautics using stochastic analysis and evolutionary algorithms

  J Pons-Prats, G Bugeda, F Zárate, E Oñate

  Proceedings of the Institution of Mechanical Engineers, Part G: Journal of ..., 2011

• Extended rotation‐free plate and beam elements with shear deformation effects

  E Onate, F Zarate

  International journal for numerical methods in engineering 83 (2), 196-227, 2010

• Extended rotation‐free plate and beam elements with shear deformation effects

  E. Onate, F. Zarate

  International journal for numerical methods in engineering

• Learning to Program the Fem with Matlab and Gid

  F Zárate

  Structural Analysis with the Finite Element Method, 383-413, 2009

• Robust shape optimization in aeronautics

  J Pons-Prats, G Bugeda Castelltort, E Oñate Ibáñez de Navarra, F Zárate, ...

  Eighth World Congress on Structural and Multidisciplinary Optimization, 1-16, 2009

• Prediction of wear of roadheader picks using numerical simulations

  J Rojek, E Oñate, H Kargl, C Labra, J Akerman, U Restner, E Lammer, ...

  Geomechanics and Tunnelling 1 (1), 47-54, 2008

• Non-deterministic shape optimization in aeronautics

  J Pons-Prats, E Oñate, F Zárate, G Bugeda, J Hurtado

  12th AIAA/ISSMO Multidisciplinary Analysis and Optimization Conference, 5827, 2008

• Advances in discrete element modelling of underground excavations

  C Labra, J Rojek, E Oñate, F Zarate

  Acta Geotechnica 3 (4), 317-322, 2008

• Prediction of wear of roadheader picks using numerical simulations

  Jerzy Rojek, Eugenio Oñate, Hubert Kargl, Carlos Labra, Jan Akerman, Uwe Restner, Egmont Lammer, Francisco Zarate

  Geomechanics and Tunnelling

• Advances in discrete element modelling of underground excavations

  Carlos Labra, Jerzy Rojek, Eugenio Oñate, Francisco Zarate

  Acta Geotechnica

• Stabilized solution of the multidimensional advection-diffusion-absorption equation using linear finite elements

  J Miquel, E Oñate, J Zarate

  Elsevier, 2007

• Applying evolution strategies to the optimization of fluid-solid interaction problems

  S Botello, H Esqueda, A Hernandez, F Zarate, JG Valdes

  Revista Internacional de Métodos Numéricos para Cálculo y Diseño en ..., 2007

• Estrategias evolutivas aplicadas en la optimización de problemas con interacción fluido-sólido

  S Botello, H Esqueda, A Hernández, JF Zárate Araiza, JG Valdés

  Revista internacional de métodos numéricos para cálculo y diseño en ..., 2007

• Stabilized solution of the multidimensional advection–diffusion–absorption equation using linear finite elements

  E Oñate, J Miquel, F Zárate

  Computers & fluids 36 (1), 92-112, 2007

• Applying evolution strategies to the optimization of fluid-solid interaction problems

  Salvador Botello, Humberto Esqueda, Arturo Hernandez, Francisco Zarate, J Gerardo Valdes

  Revista Internacional de Métodos Numéricos para Cálculo y Diseño en Ingeniería

• Estrategias evolutivas aplicadas en la optimización de problemas con interacción fluido-sólido

  Salvador Botello, Humberto Esqueda, Arturo Hernández, José Francisco Zárate Araiza, J Gerardo Valdés

  Revista internacional de métodos numéricos para cálculo y diseño en ingeniería

• Stabilized solution of the multidimensional advection–diffusion–absorption equation using linear finite elements

  E. Oñate, J. Miquel, F. Zárate

  Computers & fluids

• MAT-FEM Learning finite element with Matlab and GiD

  F ZARATE, E OÑATE

  CIMNE, 2006

• Simulación de problemas de desgaste, en la interacción herramienta de corte terreno, empleando el método de los elementos discretos

  CA Recarey, E Oñate, J Miquel, J Rojek, F Zarate, S Burel

  Ingeniería Civil, 19-36, 2006

• Finite element formulation for convective–diffusive problems with sharp gradients using finite calculus

  E Oñate, F Zárate, SR Idelsohn

  Computer methods in applied mechanics and engineering 195 (13), 1793-1825, 2006

• Simulación de problemas de desgaste, en la interacción herramienta de corte terreno, empleando el método de los elementos discretos

  Carlos A Recarey, Eugenio Oñate, Juan Miquel, Jerzy Rojek, Francisco Zarate, Sara Burel

  Ingeniería Civil

• Finite element formulation for convective–diffusive problems with sharp gradients using finite calculus

  E. Oñate, F. Zárate, S. R. Idelsohn

  Computer methods in applied mechanics and engineering

• Modelación del ensayo brasileño empleando modelación discreta

  CA Recarey Morfa, O ONATE IBANEZ DE NAVARRA, J Rojek, JM Canet, ...

  Ingeniería Civil, 2005

• Estudio de estimación de parámetros constitutivos en el método de elementos discretos o de partículas

  C Recarey, E Oñate Ibáñez de Navarra, J Miquel Canet, JF Zárate Araiza, ...

  Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE), 2005

• El problema del contacto en bombas de engranajes de perfil trocoidal

  M Sánchez, F Zárate, PJ Gamez-Montero, EC Macià, R Castilla

  Métodos numéricos para cálculo y diseño en ingeniería: Revista internacional ..., 2005

• Avances en el desarrollo de los métodos de elementos discretos y de elementos finitos para el análisis de problemas de fractura

  E Oñate, C Labra, F Zárate, J Rojek, J Miquel

  Anales de Mecánica de la Fractura 22, 27-34, 2005

• Discrete element modelling and simulation of sand mould manufacture for the lost foam process

  J Rojek, F Zarate, CA de Saracibar, C Gilbourne, P Verdot

  International journal for numerical methods in engineering 62 (11), 1421-1441, 2005

• HORMIGON-Modelacion y simulacion del ensayo de traccion indirecta o ensayo brasileno, empleando el Metodo de los Elementos Distintos (MED).

  Carlos A Recarey Morfa, Eugenio Onate Ibanez de Navarra, Jerzy Rojek, Juan Miguel Canet, Francisco Zarate, Gilles Cadoce

  Fabricacion Investigacion y Aplicaciones del Cemento y del Hormigon

• Reliability estimation of the sheet stamping process using support vector machines

  Jorge E. Hurtado, Francisco Zarate, Eugenio Onate

  International Journal of Vehicle Design

• Modelación del ensayo brasileño empleando modelación discreta

  Carlos A Recarey Morfa, E ONATE IBANEZ DE NAVARRA, Jerzy Rojek, Juan Miquel Canet, Francisco Zarate, Gilles Cadoce

  Ingeniería Civil

• El problema del contacto en bombas de engranajes de perfil trocoidal

  Esteve Codina Macià, Roberto Castilla, Francisco Zárate, Pedro J Gamez-Montero, Montserrat Sánchez

  Métodos numéricos para cálculo y diseño en ingeniería: Revista internacional

• Avances en el desarrollo de los métodos de elementos discretos y de elementos finitos para el análisis de problemas de fractura

  E Oñate, C Labra, F Zárate, J Rojek, J Miquel

  Anales de Mecánica de la Fractura

• Discrete element modelling and simulation of sand mould manufacture for the lost foam process

  J. Rojek, F. Zarate, C. Agelet de Saracibar, C. Gilbourne, P. Verdot

  International journal for numerical methods in engineering

• Enhanced rotation‐free basic shell triangle for sheet stamping problems

  E Oñate, F Flores, L Neamtu, R Weiler, J Rojek, F Zarate

  AIP Conference Proceedings 712 (1), 2222-2227, 2004

• Economical exploitation of polymer coated steel sheet in large-scale production of new can types by the European can industry

  J Rojek, E Onate, M Chiumenti, M Luege, F Zarate, O Fruitos, A Ferriz, ...

  Internal Project Report (FP-6 POLYCOAT), 2004

• Characterization of micro-macro parameters in discrete element formulation

  E Oñate, C Recarey, F Zarate, J Miquel, J Rojek

  CIMNE, Barcelona, 2004

• Thermomechanical discrete element formulation for wear analysis of rock cutting tools

  J Rojek, E Oñate, F Zarate, J Miquel

  CIMNE, Barcelona, 2004

• Posibilidades de las nuevas tecnologías de información y comunicaciones en el sector de la construcción

  E Oñate, J Marcipar, F Zárate

  Barcelona: CIMNE (Centro Internacional de Métodos Numéricos en Ingeniería ..., 2003

• Numerical simulation of sand mould manufacture for lost foam casting process

  J Rojek, F Zarate, CA de Saracibar, M Chiumenti, M Cervera, PM Haigh, ...

  Proceedings of the 6th Esaform Conference on Material Forming, Salerno ..., 2003

• POSIBILIDADES DEL CALCULO FINITE-SIMAL EN MECANICA COMPUTACIONAL

  E Oñate, F Zárate, G Ayala, S Botello, MA Moreles

  Tercer Congreso Internacional de Métodos Numéricos en Ingeniería y Ciencias ..., 2002

• STAC program: Stochastic analysis computational tool

  F Zárate, J Hurtado, E Oñate, J Rodríguez

  CIMNE, Centro Internacional de Métodos Numéricos en la Ingeniería, 2002

• Un entorno para análisis estocástico en mecánica computacional

  F Zárate, JE Hurtado, E Oñate, JA Rodríguez

  Congreso de métodos numéricos en la ingeniería y la ciencia aplicadas, CIMNE ..., 2002

• Manual de usuario del GID

  F Zárate, E Sala, J Marcipar

  Centro Internacional de Métodos Numéricos, 2001

• Introducción al método de los elementos finitos

  E Oñate, F Zárate

  Apuntes del Curso a Distancia, Métodos Numéricos para el Cálculo y Diseno en ..., 2001

• Modelling of rock, soil and granular materials using spherical elements.

  J Rojek, E Oñate, F Zarate, J Miquel

  2 nd European Conference on Computational Mechanics, 742-743, 2001

• The Monte Carlo method. Application to the stochastic analysis of sheet stamping processes

  F Zarate, E Onate

  International Center for Numerical Methods in engineering, 2000

• The Monte Carlo method

  JE Hurtado, F Zarate, E Onate

  Application to the stochastic analysis of sheet stamping processes ..., 2000

• Rotation-free triangular plate and shell elements

  E Onate, F Zárate

  International Journal for Numerical Methods in Engineering 47 (1-3), 557-603, 2000

• Rotation-free triangular plate and shell elements

  E. Oñate, F. Zárate

  International Journal for Numerical Methods in Engineering

• New Thin Plate and Shell Triangles with Translational Degrees of Freedom Only

  E Oñate, F Zárate

  IUTAM Symposium on Discretization Methods in Structural Mechanics, 79-89, 1999

• Advances in rotation-free shell elements for sheet stamping analysis

  E Onate, F Zárate, J Rojek, G Duffett, L Neamtu

  Numisheet99, JC Gelin and P. Picart (Eds.), BURS Edition, Besançon, France, 1999

• New triangular finite elements for plates and shells

  F Zarate

  Ph. D. thesis, Universitat Politecnica de Catalunya, Barcelona, 1996 (in ..., 1996

• A three node triangular shell element with translational degrees of freedom

  E Onate, M Cervera, F Zarate

  Research Report, 1995

• New assumed strain triangles for non linear shell analysis

  FG Flores, E Onate, F Zarate

  Computational Mechanics 17 (1-2), 107-114, 1995

• New assumed strain triangles for non linear shell analysis

  FG Flores, E Onate, F Zarate

  Computational Mechanics

• A SIMPLE TRIANGULAR ELEMENT FOR THICK AND THIN PLATE AND SHELL ANALYSIS'Peggy? lféores

  E Onate, F Zarate, F Flores

  International Journal for Numerical Methods in Engineering 37, 2569-2582, 1994

• A simple triangular element for thick and thin plate and shell analysis

  E. Oñate, F. Zarate, F. Flores

  International Journal for Numerical Methods in Engineering

• CALTEP: Programa para el cálculo transitorio de la ecuación de Poisson

  JFZ Araiza, E Oñate

  Centro Internacional de Métodos Numéricos en Ingeniería, 1993

Books, book chapters and edited books (Documents not available in Scipedia)

• Contribution to the Definition of Non Deterministic Robust Optimization in Aeronautics Accounting with Variable Uncertainties

  Jordi Pons Prats, G Bugeda, José Francisco Zárate Araiza

  International Center for Numerical Methods in Engineering

• MAT-FEM Learning finite element with Matlab and GiD

  F ZARATE, E OÑATE

  Structural Analysis with the Finite Element Method. Linear Statics, Volume 1. Basis and Solids

• Conference: 4to Congreso Internacional, 2do Congreso Nacional de Métodos Numéricos en Ingeniería y Ciencias Aplicadas

  M.C. Súarez, S. Gallegos, F. Zárate, S. Botello, M. Moreles, J. Perez, M Rodríguez y F. Domínguez

  4to Congreso Internacional, 2do Congreso Nacional de Métodos Numéricos en Ingeniería y Ciencias Aplicadas

• Estudio de estimación de parámetros constitutivos en el método de elementos discretos o de partículas

  C Recarey, Eugenio Oñate Ibáñez de Navarra, Juan Miquel Canet, José Francisco Zárate Araiza, J Rojek, S Burrel

  Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE)

• memorias del II Congreso Internacional de Métodos Numéricos en Ingeniería y Ciencias Aplicadas

  E Oñate, F Zárate, G Ayala, S Botello, MA Moreles

  II Congreso Internacional de Métodos Numéricos en Ingeniería y Ciencias Aplicadas

• The Monte Carlo method

  JE Hurtado, F Zarate, E Onate

  Application to the stochastic analysis of sheet stamping processes

Conference papers and presentations (Documents not available in Scipedia)

• A coupled FEM-DEM procedure for predicting blasting operations in tunnels

  Francisco Zárate, José M. Gonzalez, Juan Miquel, Rainald Lohner and Eugenio Oñate

  EURO:TUN 2017, Innsbruck University, Austria

• A Particle-Discrete-Finite Element Method for Analysis of Particulate Flows and Their Interaction with Structures

  Eugenio Oñate, Miguel A Celigueta, Guillermo Casas, Riccardo Rossi, F Zarate, Sergio R Idelsohn

  13th US National Congress on Computational Mechanics

• Application of an enhanced discrete element method to oil and gas drilling processes

  Eugenio Oñate Ibáñez de Navarra, Ferran Arrufat Garcia, José Francisco Zárate Araiza, Pere-Andreu Ubach Fuentes, Varadaraju Gandikota, Lev Ring

  DEM 6: 6th International Conference on Discrete Element Methods and Related Techniques

• Modelling and simulation of the effect of blast loading on structures using an adaptive blending of discrete and finite element methods

  C Labra, E Oňate, F Zárate, J Rojek

  Particle-based methods II: fundamentals and applications: proceedings of the II International Conference on Particle-based Methods

• Modelling and simulation of the effect of blast loading on structures using an adaptive blending of discrete and finite element methods

  E Oñate, C Labra, F Zárate, J Rojek

  Risk Analysis, Dam Safety, Dam Security and Critical Infrastructure Management

• Stochastic and Robust design procedures applied to the optimization with uncertainties

  Jordi Pons Prats, Gabriel Bugeda Castelltort, José Francisco Zárate Araiza, Eugenio Oñate Ibáñez de Navarra

  EUROGEN 2011. Evolutionary methods for design, optimization and control. Applications to industrial and societal problems.

• Robust design optimization in aeronautics using stochastic analysis and evolutionary algorithms

  J Pons-Prats, G Bugeda, F Zárate, E Oñate

  Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering

• Robust shape optimization in aeronautics

  Jordi Pons-Prats, Gabriel Bugeda Castelltort, Eugenio Oñate Ibáñez de Navarra, Francisco Zárate, Jorge Eduardo Hurtado Gómez

  Eighth World Congress on Structural and Multidisciplinary Optimization

• A NEW ROTATION-FREE TRIANGULAR PLATE ELEMENT WITH SHEAR DEFORMATION EFFECTS

  F Zárate, E Oñate

  8th. World Congress on Computational Mechanics

• STABILIZED FINITE ELEMENT FORMULATION FOR CONVECTIVE TRANSPORT PROBLEMS WITH SHARP GRADIENTS VIA HIGHER ORDER FINITE CALCULUS

  Eugenio Oñate, Francisco Zárate, Sergio R Idelsohn

  8th. World Congress on Computational Mechanics

• Non-deterministic shape optimization in aeronautics

  Jordi Pons-Prats, Eugenio Oñate, Francisco Zárate, Gabriel Bugeda, Jorge Hurtado

  12th AIAA/ISSMO Multidisciplinary Analysis and Optimization Conference

• Enhanced rotation‐free basic shell triangle for sheet stamping problems

  E Oñate, F Flores, L Neamtu, R Weiler, J Rojek, F Zarate

  AIP Conference Proceedings

• Numerical simulation of sand mould manufacture for lost foam casting process

  J Rojek, F Zarate, C Agelet de Saracibar, M Chiumenti, M Cervera, PM Haigh, C Gilbourne, P Verdor

  Proceedings of the 6th Esaform Conference on Material Forming, Salerno, Italy

• Un entorno para análisis estocástico en mecánica computacional

  F Zárate, JE Hurtado, E Oñate, JA Rodríguez

  Congreso de métodos numéricos en la ingeniería y la ciencia aplicadas

• Modelling of rock, soil and granular materials using spherical elements.

  J Rojek, E Oñate, F Zarate, J Miquel

  2 nd European Conference on Computational Mechanics

• New Thin Plate and Shell Triangles with Translational Degrees of Freedom Only

  E Oñate, F Zárate

  IUTAM Symposium on Discretization Methods in Structural Mechanics

• Advances in rotation-free shell elements for sheet stamping analysis

  E Onate, F Zárate, J Rojek, G Duffett, L Neamtu

  Numisheet99, JC Gelin and P. Picart (Eds.), BURS Edition, Besançon, France

Technical reports, thesis and other (Documents not available in Scipedia)

• Modelling and analysis of Cement and Concrete Samples under Mechanical Testing with Discrete Element Method

  E Onate, F Zárate, F Arrufat, J Miquel, PA Ubach

  International Report, CIMNE

• Characterization of micro-macro parameters in discrete element formulation

  E Oñate, C Recarey, F Zarate, J Miquel, J Rojek

  CIMNE, Barcelona

• Economical exploitation of polymer coated steel sheet in large-scale production of new can types by the European can industry

  J Rojek, E Onate, M Chiumenti, M Luege, F Zarate, O Fruitos, A Ferriz, S Oller

  Internal Project Report (FP-6 POLYCOAT)

• Thermomechanical discrete element formulation for wear analysis of rock cutting tools

  J Rojek, E Oñate, F Zarate, J Miquel

  CIMNE, Barcelona

• Posibilidades de las nuevas tecnologías de información y comunicaciones en el sector de la construcción

  E Oñate, J Marcipar, F Zárate

  CIMNE (Centro Internacional de Métodos Numéricos en Ingeniería)

• STAC program: Stochastic analysis computational tool

  F Zárate, J Hurtado, E. Oñate, J. Rodríguez

  CIMNE, Centro Internacional de Métodos Numéricos en la Ingeniería

• Introducción al método de los elementos finitos

  E. Oñate, F. Zárate

  Apuntes del Curso a Distancia, Métodos Numéricos para el Cálculo y Diseño en Ingeniería, Universidad de Cataluña, España

• New triangular finite elements for plates and shells

  F Zarate

  Ph. D. thesis, Universitat Politecnica de Catalunya, Barcelona, 1996 (in Spanish)

• A three node triangular shell element with translational degrees of freedom

  E Onate, M Cervera, F Zarate

  CIMNE Research Report

• CALTEP: Programa para el cálculo transitorio de la ecuación de Poisson

  F. Zárate , E. Oñate

  Centro Internacional de Métodos Numéricos en Ingeniería