Ara es mostren els items 21-40 de 58

    • Fatigue analysis of a naval composite structure 

      Jurado Granados, Joel; Martínez García, Javier; Barbu, Lucia Gratiela; Capua, Daniel di (CRC Press, 2020)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The use of composite materials in marine industry has many potential benefits, such as lower weight. However, there are still some failure mechanisms, such as fatigue, that are not yet completely under- stood. This work ...
    • Fatigue prediction of composite materials, based on serial/parallel mixing theory 

      Jurado Granados, Joel; Martínez García, Javier; Barbu, Lucia Gratiela; Capua, Daniel di (2022-03-31)
      Article
      Accés restringit per política de l'editorial
      In this work, a numerical procedure to obtain the fatigue performance of composite laminates is proposed. The formulation used is based on the Serial/Parallel Mixing Theory (SP-RoM) and a fatigue damage model. The SP-RoM ...
    • FIBRESHIP: A great step forward in the design and construction of lightweight large-length vessels 

      Martínez García, Javier; Jurado Granados, Joel; Jurado, Alfonso; García Espinosa, Julio (2021)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The application of composite materials in large-length shipbuilding is attracting considerable attention thanks to their significant expected structural weight reduction, resulting in advantages such as bunkering savings, ...
    • Guidelines for seismic vulnerability reduction in the urban environment: LESSLOSS report no. 2007/04 

      Oller Martínez, Sergio Horacio; Barbat Barbat, Horia Alejandro; Mata Almonacid, Pablo; Martínez García, Javier (IUSS Press, 2007-07)
      Llibre
      Accés restringit per política de l'editorial
    • High cycle fatigue simulation: a new stepwise load-advancing strategy 

      Barbu, Lucia Gratiela; Oller Martínez, Sergio Horacio; Martínez García, Javier; Barbat Barbat, Horia Alejandro (2015-08)
      Article
      Accés obert
      A stepwise load-advancing strategy for cyclic loading will be presented in this paper that yields convergence in reasonable computational time for highly nonlinear behaviour occurring past the S–N curve. The algorithm is ...
    • High-cycle fatigue constitutive model and a load-advance strategy for the analysis of unidirectional fiber reinforced composites subjected to longitudinal loads 

      Barbu, Lucia Gratiela; Oller Martínez, Sergio Horacio; Martínez García, Javier; Barbat Barbat, Horia Alejandro (2019-07)
      Article
      Accés obert
      A fatigue constitutive model valid for the composite constituent will be presented in this paper. The composite behaviour will be obtained by means of the serial/parallel mixing theory that is also used as a constitutive ...
    • High-quality crystalline optical nanoantennas 

      Martínez García, Javier (Universitat Politècnica de Catalunya, 2012-09-10)
      Projecte Final de Màster Oficial
      Accés obert
      [ANGLÈS] Nowadays there is an increasing interest in high resolution nanopatterning of plasmonic structures. Several approaches mainly based on thermal evaporation of poly-crystalline metallic films are limited by the ...
    • Impact damage prediction in carbon fiber-reinforced laminated composite using the matrix-reinforced mixing theory 

      Pérez Martínez, Marco Antonio; Martínez García, Javier; Oller Martínez, Sergio Horacio; Gil Espert, Lluís; Rastellini, Fernando G.; Flores, Fernando (2013-10-01)
      Article
      Accés obert
      The impact damage tolerance of fiber-reinforced laminated composite materials is a source of concern, mainly due to internal induced damage which causes large reductions on the strength and stability of the structure. This ...
    • Large scale validation of a new isotropic hardening law for the barcelona plastic damage model under ultra low cycle fatigue conditions 

      Barbu, Lucia Gratiela; Martínez García, Javier; Oller Martínez, Sergio Horacio; Barbat Barbat, Horia Alejandro (CIMNE, 2015)
      Text en actes de congrés
      Accés obert
      This paper presents the results of finite element simulations made on a bent pipe subjected to an in-plane variable cyclic displacement combined with internal pressure. The results of the numerical analyses will be compared ...
    • Methodology for the analysis of post-tensioned structures using a constitutive serial-parallel rule of mixtures 

      Cornejo, Alejandro; Barbu, Lucia Gratiela; Escudero Torres, Cuauhtemoc; Martínez García, Javier; Oller Martínez, Sergio Horacio; Barbat Barbat, Horia Alejandro (2018-09)
      Article
      Accés obert
      The main purpose of this paper is to develop a reliable method based on a three-dimensional (3D) finite-element (FE) model to simulate the constitutive behaviour of reinforced concrete structures strengthened with ...
    • Methodology for the analysis of post-tensioned structures using a constitutive serial-parallel rule of mixtures: large scale non-linear analysis 

      Barbu, Lucia Gratiela; Cornejo Velázquez, Alejandro; Martínez García, Javier; Oller Martínez, Sergio Horacio; Barbat Barbat, Horia Alejandro (2019-05)
      Article
      Accés obert
      The main purpose of this paper is to develop a reliable method based on a three-dimensional (3D) finite-element (FE) model to simulate the constitutive behaviour of reinforced concrete structures strengthened with ...
    • Model-wise algorithm for the resolution of fatigue problems 

      Barbu, Lucia Gratiela; Oller Martínez, Sergio Horacio; Martínez García, Javier; Barbat Barbat, Horia Alejandro (CIMNE, 2015)
      Text en actes de congrés
      Accés obert
      The present work presents a general constitutive model formulation and a numerical algorithm for automatically selecting the appropriate coupling of damage and plasticity as a function of the number of cycles the material ...
    • Modelling the elastic behaviour of carbon nanotube-reinforced composites 

      Otero-Gruer, Fermín; Oller Martínez, Sergio Horacio; Martínez García, Javier; Salomón, Ramón Omar (2011)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Carbon nanotubes (CNTs), since their discovery by Lij ima in 1991 [1], are considered a new generation of reinforcement [2]. Their "nano" size structure makes them potentially free of defects, which provides them with ...
    • Modelling viscoelastic behaviour of carbón nanotube-reinforced thermo-plastics 

      Otero Gruer, Fermín Enrique; Oller Martínez, Sergio Horacio; Martínez García, Javier; Salomón, Ramón Omar (Asociación Argentina de Mecánica Computacional, 2012)
      Text en actes de congrés
      Accés obert
      Carbon nanotubes (CNTs), since their discovery by Lijima (S. Lijima, Nature, 354:56-58 (1991)), are considered a new generation of reinforcement. Their "nano" size structure makes them potentially free of defects, which ...
    • Multi-objective multi-scale optimization of composite structures, application to an aircraft overhead locker made with bio-composites 

      Martínez García, Javier; Pons Prats, Jordi; Turon Pujol, Francesc; Coma Company, Martí; Barbu, Lucia Gratiela; Bugeda Castelltort, Gabriel (Multidisciplinary Digital Publishing Institute (MDPI), 2022-12-28)
      Article
      Accés obert
      The use of composite materials has grown exponentially in transport structures due to their weight reduction advantages, added to their capability to adapt the material properties and internal micro-structure to the ...
    • Multi-scale procedure for the mechanical analysis of composite laminate structures considering mixed boundary conditions 

      Turon Pujol, Francesc; Otero Gruer, Fermín Enrique; Martínez García, Javier (2023-10)
      Article
      Accés obert
      This paper presents a multi-scale procedure for the study of flat composite structures with discontinuities. In this procedure, the structure is solved using shell elements while the laminate performance and the structural ...
    • Multiscale computational homogenization 

      Otero Gruer, Fermín Enrique; Oller Martínez, Sergio Horacio; Martínez García, Javier (Centro de Investigación en Matemáticas, 2017)
      Capítol de llibre
      Accés restringit per política de l'editorial
    • Multiscale computational homogenization: review and proposal of a new enhanced-first-order method 

      Otero Gruer, Fermín Enrique; Oller Martínez, Sergio Horacio; Martínez García, Javier (2018-04)
      Article
      Accés obert
      The continuous increase of computational capacity has encouraged the extensive use of multiscale techniques to simulate the material behaviour on several fields of knowledge. In solid mechanics, the multiscale approaches ...
    • Multiscale numerical modelling of microstructured reinforced composites 

      Otero Gruer, Fermín Enrique; Oller Martínez, Sergio Horacio; Martínez García, Javier (International Centre for Numerical Methods in Engineering (CIMNE), 2016)
      Llibre
      Accés obert
      Most of the existing materials around us can be considered composite materials, since they are composed by several phases or components at certain spatial scale. The physical and chemical properties of composites, as occurs ...
    • Multiscale thermo-mechanical analysis of multi-layered coatings in solar thermal applications 

      Montero-Chacón, Francisco; Zaghi, Stefano; Rossi, Riccardo; García-Pérez, Elena; Heras Pérez, Irene; Martínez García, Javier; Oller Martínez, Sergio Horacio; Doblaré, Manuel (2017-05)
      Article
      Accés obert
      Solar selective coatings can be multi-layered materials that optimize the solar absorption while reducing thermal radiation losses, granting the material long-term stability. These layers are deposited on structural materials ...