Author
Alfredo Edmundo Huespe
Other affiliations: Intec, Inc., Polytechnic University of Catalonia, National University of the Littoral
Bio: Alfredo Edmundo Huespe is an academic researcher from National Scientific and Technical Research Council. The author has contributed to research in topics: Finite element method & Material failure theory. The author has an hindex of 32, co-authored 95 publications receiving 3033 citations. Previous affiliations of Alfredo Edmundo Huespe include Intec, Inc. & Polytechnic University of Catalonia.
Papers published on a yearly basis
Papers
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TL;DR: In this article, the authors deal with the strong discontinuity approach and show the links with the decohesive fracture mechanics provided by that approach, on the basis of 1D continuum damage models.
269 citations
TL;DR: A comparative study on finite elements for capturing strong discontinuities by means of elemental (E-FEM) or nodal enrichments (X-F EM) is presented and it is shown that both methods provide the same qualitative and quantitative results for enough refined meshes.
247 citations
TL;DR: In this paper, a phase-field continuum theory for brittle fracture in elastic-plastic solids and its computational implementation are presented, based on a virtual-power formulation in which two additional and independent kinematical descriptors are introduced, namely the phase field and the accumulated plastic strain.
176 citations
TL;DR: In this article, the authors focus on modeling material failure in a strong discontinuity setting using a continuum format, enriched by a transition from weak to strong discontinuities to get an appropriate representation of the fracture process zone.
163 citations
TL;DR: In this paper, a global algorithm for tracking multiple crack lines/surfaces in 2D/3D cases is proposed based on solving a simple heat conduction-like problem accompanying the standard mechanical algorithm.
Abstract: SUMMARY Some new aspects of the continuum strong discontinuity approach (CSDA) to model material failure in geomaterials are addressed. A new global algorithm, for tracking multiple crack lines/surfaces in 2D/3D cases is proposed. It is based on solving a simple heat conduction-like problem accompanying the standard mechanical algorithm. A viscous perturbation method on the crack surface is also proposed to remedy the instabilities caused by mutual interactions of multiple developing cracks. A simple procedure to compute the critical time step that ensures algorithmic uniqueness is then provided. Numerical simulations of twoand three-dimensional problems displaying a multi-crack pattern are finally presented. Copyright # 2004 John Wiley & Sons, Ltd.
150 citations
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TL;DR: In this article, a numerical method for solving dynamic problems within the peridynamic theory is described, and the properties of the method for modeling brittle dynamic crack growth are discussed, as well as its accuracy and numerical stability.
1,644 citations
TL;DR: In this paper, the authors present the techniques, advances, problems and likely future developments in numerical modelling for rock mechanics and discuss the value that is obtained from the modelling, especially the enhanced understanding of those mechanisms initiated by engineering perturbations.
976 citations
TL;DR: In this paper, a modified regularized formulation of the Ambrosio-Tortorelli type was proposed to avoid crack interpenetration and predicts asymmetric results in traction and in compression.
Abstract: This paper presents a modified regularized formulation of the Ambrosio–Tortorelli type to introduce the crack non-interpenetration condition in the variational approach to fracture mechanics proposed by Francfort and Marigo [1998. Revisiting brittle fracture as an energy minimization problem. J. Mech. Phys. Solids 46 (8), 1319–1342]. We focus on the linear elastic case where the contact condition appears as a local unilateral constraint on the displacement jump at the crack surfaces. The regularized model is obtained by splitting the strain energy in a spherical and a deviatoric parts and accounting for the sign of the local volume change. The numerical implementation is based on a standard finite element discretization and on the adaptation of an alternate minimization algorithm used in previous works. The new regularization avoids crack interpenetration and predicts asymmetric results in traction and in compression. Even though we do not exhibit any gamma-convergence proof toward the desired limit behavior, we illustrate through several numerical case studies the pertinence of the new model in comparison to other approaches.
964 citations
TL;DR: In this paper, a new robust and efficient approach for modeling discrete cracks in mesh-free methods is described, where the crack is modeled by splitting particles located on opposite sides of the associated crack segments and make use of the visibility method in order to describe the crack kinematics.
730 citations
TL;DR: In this paper, the first overview of failure of metals is presented, focusing on brittle and ductile failure under monotonic loadings, where the focus is on linking microstructure, physical mechanisms and overall fracture properties.
639 citations