Author
Laurent Daudeville
Other affiliations: École normale supérieure de Cachan, Grenoble Institute of Technology, Joseph Fourier University ...read more
Bio: Laurent Daudeville is an academic researcher from University of Grenoble. The author has contributed to research in topics: Discrete element method & Finite element method. The author has an hindex of 28, co-authored 102 publications receiving 2432 citations. Previous affiliations of Laurent Daudeville include École normale supérieure de Cachan & Grenoble Institute of Technology.
Papers published on a yearly basis
Papers
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TL;DR: In this article, the use of a 3D discrete element method (DEM) is proposed to study concrete submitted to dynamic loading, and the model has already been validated through quasi-static simulations.
257 citations
TL;DR: In this paper, the use of a three-dimensional discrete element method (DEM) is proposed to study concrete structures submitted to dynamic loading, and the model produces a quantitative match of strength and deformation characteristics of concrete in terms of Young's modulus, Poisson's coefficient and compressive and tensile strengths.
Abstract: The use of a three-dimensional discrete element method ~DEM! is proposed to study concrete structures submitted to dynamic loading. The aim of this paper is to validate the model first in the quasistatic domain, and second in dynamic compression, at the sample scale. A particular growing technique is used to set a densely packed assembly of arbitrarily sized spherical particles interacting together, representing concrete. An important difference from classical DEMs where only contact interactions are considered, is the use of an interaction range. First, the correct identification of parameters of the DEM model to simulate elastic and nonlinear deformation including damage and rupture is made through quasistatic uniaxial compression and tension tests. The influence of the packing is shown. The model produces a quantitative match of strength and deformation characteristics of concrete in terms of Young's modulus, Poisson's coefficient, and compressive and tensile strengths. Then, its validity is extended through dynamic tests. The simulations exhibit complex macroscopic behaviors of concrete, such as strain softening, fractures that arise from extensive microcracking throughout the assembly, and strain rate dependency.
178 citations
TL;DR: In this article, a triaxial press of high capacity is used to characterize the triaxia behavior of concrete according to various loading paths and show the existence of strain limit states, defining a limit states threshold independent from loading path.
156 citations
TL;DR: In this article, the effect of the saturation ratio on concrete behavior under high confinement was evaluated by using triaxial test results on concrete samples over a saturation ratio range extending from dried to quasi-saturated concretes.
146 citations
TL;DR: In this paper, the composite laminate is modeled at a meso scale as a stacking of homogeneous layers connected by interfaces, and both onset of delamination and its propagation on a short distance are predicted.
136 citations
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31 Oct 2001
TL;DR: The American Society for Testing and Materials (ASTM) as mentioned in this paper is an independent organization devoted to the development of standards for testing and materials, and is a member of IEEE 802.11.
Abstract: The American Society for Testing and Materials (ASTM) is an independent organization devoted to the development of standards.
3,792 citations
1,604 citations
TL;DR: In this paper, a methodology to determine the constitutive parameters for the simulation of progressive delamination is proposed, which accounts for the size of a cohesive finite element and the length of the cohesive zone to ensure the correct dissipation of energy.
1,314 citations
TL;DR: In this paper, a new decohesion element with the capability of dealing with crack propagation under mixed-mode loading is proposed and demonstrated, which is used at the interface between solid finite elements to model the initiation and non-self-similar growth of delaminations in composite materials.
Abstract: A new decohesion element with the capability of dealing with crack propagation under mixed-mode loading is proposed and demonstrated. The element is used at the interface between solid finite elements to model the initiation and non-self-similar growth of delaminations in composite materials. A single relative displacement-based damage parameter is applied in a softening law to track the damage state of the interface and to prevent the restoration of the cohesive state during unloading. The softening law is applied in the three-parameter Benzeggagh-Kenane mode interaction criterion to predict mixed-mode delamination propagation. To demonstrate the accuracy of the predictions, steady-state delamination growth is simulated for quasi-static loading of various single mode and mixed-mode delamination test specimens and the results are compared with experimental data.
1,285 citations
01 Jun 2002
TL;DR: In this article, a decohesion element with mixed-mode capability is proposed and demonstrated at the interface between solid finite elements to model the initiation and non-self-similar growth of delaminations.
Abstract: A new decohesion element with mixed-mode capability is proposed and demonstrated. The element is used at the interface between solid finite elements to model the initiation and non-self-similar growth of delaminations. A single relative displacement-based damage parameter is applied in a softening law to track the damage state of the interface and to prevent the restoration of the cohesive state during unloading. The softening law for mixed-mode delamination propagation can be applied to any mode interaction criterion such as the two-parameter power law or the three-parameter Benzeggagh-Kenane criterion. To demonstrate the accuracy of the predictions and the irreversibility capability of the constitutive law, steady-state delamination growth is simulated for quasistatic loading-unloading cycles of various single mode and mixed-mode delamination test specimens.
909 citations