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Author

Lorenzo Iannucci

Other affiliations: Polytechnic University of Turin
Bio: Lorenzo Iannucci is an academic researcher from Imperial College London. The author has contributed to research in topics: Finite element method & Composite laminates. The author has an hindex of 32, co-authored 119 publications receiving 4268 citations. Previous affiliations of Lorenzo Iannucci include Polytechnic University of Turin.


Papers
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Journal ArticleDOI
TL;DR: In this article, a 3D failure criteria for laminated fiber-reinforced composites, based on a physical model for each failure mode and considering non-linear matrix shear behavior, are developed.
Abstract: 3D failure criteria for laminated fibre-reinforced composites, based on a physical model for each failure mode and considering non-linear matrix shear behaviour, are developed. Special emphasis is given to compression failure. The physical model for matrix compression failure is based on the Mohr–Coulomb criterion and also predicts the fracture angle. For fibre kinking, an initial fibre-misalignment angle is considered to trigger failure, due to further rotation during the compressive loading. The plane where the kinking takes place is predicted by the model, as well as the kink-band angle. Applications are presented that validate the model against experimental data.

528 citations

Journal ArticleDOI
TL;DR: In this paper, the fracture toughness associated with fiber tensile failure and compressive fibre kinking in a T300/913 carbon-epoxy laminated composite are measured using compact tension and "compact compression" tests respectively.

507 citations

Journal ArticleDOI
TL;DR: In this paper, a criterion for matrix failure of laminated composite plies in transverse tension and in-plane shear is developed by examining the mechanics of transverse matrix crack growth.
Abstract: A criterion for matrix failure of laminated composite plies in transverse tension and in-plane shear is developed by examining the mechanics of transverse matrix crack growth. Matrix cracks are assumed to initiate from manufacturing defects and can propagate within planes parallel to the fiber direction and normal to the ply mid-plane. Fracture mechanics models of cracks in unidirectional laminates, embedded plies and outer plies are used to determine the onset and direction of propagation of crack growth. The models for each ply configuration relate ply thickness and ply toughness to the corresponding in situ ply strength. Calculated results for several materials are shown to correlate well with experimental results.

388 citations

Journal ArticleDOI
TL;DR: In this paper, a 3D failure model for predicting the dynamic material response of composite laminates under impact loading is presented, which enables the control of the energy dissipation associated with each failure mode regardless of mesh refinement and fracture plane orientation.

351 citations

Book
31 Jul 2013
TL;DR: In this paper, a set of failure criteria for laminated fiber-reinforced composites, denoted as LaRC04, is proposed, which are based on physical models for each failure mode and take into consideration non-linear matrix shear behavior.
Abstract: A set of three-dimensional failure criteria for laminated fiber-reinforced composites, denoted LaRC04, is proposed. The criteria are based on physical models for each failure mode and take into consideration non-linear matrix shear behaviour. The model for matrix compressive failure is based on the Mohr-Coulomb criterion and it predicts the fracture angle. Fiber kinking is triggered by an initial fiber misalignment angle and by the rotation of the fibers during compressive loading. The plane of fiber kinking is predicted by the model. LaRC04 consists of 6 expressions that can be used directly for design purposes. Several applications involving a broad range of load combinations are presented and compared to experimental data and other existing criteria. Predictions using LaRC04 correlate well with the experimental data, arguably better than most existing criteria. The good correlation seems to be attributable to the physical soundness of the underlying failure models.

329 citations


Cited by
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Journal ArticleDOI
TL;DR: A continuum damage model for the prediction of the onset and evolution of intralaminar failure mechanisms and the collapse of structures manufactured in fiber-reinforced plastic laminates is proposed in this article.

686 citations

Journal ArticleDOI
TL;DR: In this paper, the effects of temperature on the viscoelastic properties of composites were studied by dynamic mechanical analysis (DMA) and morphological studies by scanning electron microscopy (SEM) demonstrated that better adhesion between the fiber and the matrix was achieved.

628 citations

Journal ArticleDOI
TL;DR: In this article, a 3D failure criteria for laminated fiber-reinforced composites, based on a physical model for each failure mode and considering non-linear matrix shear behavior, are developed.
Abstract: 3D failure criteria for laminated fibre-reinforced composites, based on a physical model for each failure mode and considering non-linear matrix shear behaviour, are developed. Special emphasis is given to compression failure. The physical model for matrix compression failure is based on the Mohr–Coulomb criterion and also predicts the fracture angle. For fibre kinking, an initial fibre-misalignment angle is considered to trigger failure, due to further rotation during the compressive loading. The plane where the kinking takes place is predicted by the model, as well as the kink-band angle. Applications are presented that validate the model against experimental data.

528 citations

Journal ArticleDOI
TL;DR: In this article, the authors describe the computational implementation of a new damage model for laminated composites proposed in a previous paper, which is assured by regularizing the energy dissipated at a material point by each failure mechanism.

523 citations

Journal ArticleDOI
TL;DR: In this paper, the meso-scale finite element (FE) modeling of textile composites is considered as a powerful tool for homogenisation of mechanical properties, study of stress-strain fields inside the unit cell, determination of damage initiation conditions and sites and simulation of damage development and associated deterioration of the homogenised mechanical properties of the composite.

495 citations