M
Michael Ortiz
Researcher at California Institute of Technology
Publications - 489
Citations - 34601
Michael Ortiz is an academic researcher from California Institute of Technology. The author has contributed to research in topics: Finite element method & Dislocation. The author has an hindex of 87, co-authored 467 publications receiving 31582 citations. Previous affiliations of Michael Ortiz include Complutense University of Madrid & University of Seville.
Papers
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Variational Delaunay approach to the generation of tetrahedral finite element meshes
Petr Krysl,Michael Ortiz +1 more
TL;DR: An algorithm which generates tetrahedral decomposition of a general solid body, whose surface is given as a collection of triangular facets, and uses the results of Rajan which re‐formulate Delaunay triangulation as a linear programming problem.
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Quantum mechanics based multiscale modeling of stress-induced phase transformations in iron
TL;DR: In this article, a methodology to construct high-fidelity quantum mechanics based nonlinear elastic energy densities, amenable to be included in microstructural optimization procedures like sequential lamination is presented.
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Stacking faults and partial dislocations in graphene
TL;DR: In this article, the authors investigate two mechanisms of crystallographic slip in graphene, corresponding to glide and shuffle generalized stacking faults (GSF), and compute their γ-curves using Sandia National Laboratories Large-scale Atomic/Molecular Massively Parallel Simulator (LAMMPS).
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A linearized porous brittle damage material model with distributed frictional-cohesive faults
TL;DR: In this paper, Pandolfi et al. presented a simplified model of damaging porous material, obtained through consistent linearization from a recursive-faulting material model described in.
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A sublinear-scaling approach to density-functional-theory analysis of crystal defects
TL;DR: This paper develops a sublinear-scaling method for the study of crystal defects using ab-initio Density Functional Theory (DFT), its parallel implementation and an assessment of convergence and performance by means of test cases concerned with point defects in magnesium.