Browsing by Author "Otero Gruer, Fermín Enrique"
Now showing items 1-20 of 25
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A dynamic spring element model for the prediction of longitudinal failure of polymer composites
(2019-04)
Article
Open AccessA spring element model that takes into account the dynamic effects associated with fibre failure in composite materials is presented. The model is implemented in a parallel environment to allow a better performance in the ... -
A methodology to generate design allowables of composite laminates using machine learning
(2021-12)
Article
Restricted access - publisher's policyThis work represents the first step towards the application of machine learning techniques in the prediction of statistical design allowables of composite laminates. Building on data generated analytically, four machine ... -
A synchrotron computed tomography dataset for validation of longitudinal tensile failure models based on fibre break and cluster development
(Elsevier, 2021-12)
Article
Open AccessWe performed in-situ tensile tests on two carbon fibre/epoxy composites with continuous scanning using synchrotron computed tomography (CT). Both composites were cross-ply laminates, and two specimens were tested for each ... -
A three-dimensional plastic-damage model for polymer composite materials
(Elsevier, 2022-09)
Article
Restricted access - publisher's policyA new 3D elastoplastic damage model is proposed to predict the plastic deformation and the progressive failure of unidirectional laminated composite materials at the meso-scale level. A non-associated flow rule is employed ... -
An analytical model to predict stress fields around broken fibres and their effect on the longitudinal failure of hybrid composites
(2019-03)
Article
Open AccessThis paper presents an analytical model to predict the stress redistribution around broken fibres in hybrid polymer composites. The model is used under the framework of a progressive failure approach to study the load ... -
An efficient multi-scale method for non-linear analysis of composite structures
(2015-11-01)
Article
Open AccessThe use of multi-scale procedures is encouraged by the continuous increase of computational capacity, but it is still a challenge performing a non-linear analysis of real composite structures without the aid of large ... -
An invariant based transversely-isotropic constitutive model for unidirectional fibre reinforced composites considering the matrix viscous effects
(2019-11)
Article
Open AccessFibres Reinforced Polymers (FRPs) are found in several applications in aeronautics, space and in the automotive industry. These applications are exposed to loading conditions, including impact, which results in a complex ... -
Blind benchmarking of seven longitudinal tensile failure models for two virtual unidirectional composites
(2021-01)
Article
Open AccessMany models for prediction of longitudinal tensile failure of unidirectional (UD) composites have been developed in the last decades. These models require significant assumptions and simplifications, but their consequences ... -
Damage evolution in open-hole laminated composite plates subjected to in-plane loads
(2015-12-01)
Article
Open AccessDamage evolution of notched composite laminates is analysed in this work using a discrete damage model, which estimates matrix damage evolution and fibre failure. The fibre damage is regularised with a Weibull distribution, ... -
Detailed experimental validation and benchmarking of six models for longitudinal tensile failure of unidirectional composites
(2022-01)
Article
Restricted access - publisher's policyLongitudinal tensile failure of unidirectional fibre-reinforced composites remains difficult to predict accurately. The key underlying mechanism is the tensile failure of individual fibres. This paper objectively measured ... -
Effective simulation of the mechanics of longitudinal tensile failure of unidirectional polymer composites
(Springer, 2017-12)
Article
Open AccessAn efficient computational model to simulate tensile failure of both hybrid and non-hybrid composite materials is proposed. This model is based on the spring element model, which is extended to a random 2D fibre packing. ... -
Effects of local stress fields around broken fibres on the longitudinal failure of composite materials
(2018-08-28)
Article
Open AccessAn in-depth analysis of the stress fields that surround a broken fibre in fibre reinforced composites is performed and the effects of different material properties are analysed. The stress fields obtained using a spring ... -
Experimental characterization and constitutive modeling of the non-linear stress–strain behavior of unidirectional carbon–epoxy under high strain rate loading
(Springer, 2018-12)
Article
Open AccessThe mechanical response of IM7-8552 carbon epoxy was investigated for transverse tension and transverse tension/in-plane shear loadings at static and dynamic strain rates using transverse tension and off-axis tension ... -
Modelling viscoelastic behaviour of carbón nanotube-reinforced thermo-plastics
(Asociación Argentina de Mecánica Computacional, 2012)
Conference report
Open AccessCarbon 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-scale procedure for the mechanical analysis of composite laminate structures considering mixed boundary conditions
(2023-10)
Article
Open AccessThis 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
(Centro de Investigación en Matemáticas, 2017)
Part of book or chapter of book
Restricted access - publisher's policy -
Multiscale computational homogenization: review and proposal of a new enhanced-first-order method
(2018-04)
Article
Open AccessThe 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
(Universitat Politècnica de Catalunya, 2016-02-09)
Doctoral thesis
Open AccessMost 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 numerical modelling of microstructured reinforced composites
(International Centre for Numerical Methods in Engineering (CIMNE), 2016)
Book
Open AccessMost 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 ... -
Novel approach combining two homogenization procedures for the analysis of nonwoven biocomposites
(Taylor & Francis Group, 2022-11-29)
Article
Open AccessComposite materials with complex internal microstructures, such as the flax nonwoven bio-composite studied in this work, require advanced numerical models in order to predict their mechanical performance. Otherwise, the ...
