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Enhancing the robustness of meshfree Galerkin methods for solid mechanics simulations using the virtual element decomposition

  • October 11, 2018
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2018 – 2021 Principal Investigator: Alejandro Ortiz-Bernardin. Project funded by CONICYT-FONDECYT (Grant Nº 1181192) Meshfree methods have several attributes that make them attractive for simulation in mechanics. Two important ones are summarized as follows. The meshfree approximation is independent of the definition of a finite element mesh — the approximation is constructed based solely on nodal locations.

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Improving algorithms for the generation of polygonal and polyhedral meshes

  • October 11, 2018
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2018 – 2021 Principal Investigator: Nancy Hitschfeld-Kahler. Co-Investigator: Alejandro Ortiz-Bernardin. Project funded by CONICYT-FONDECYT (Grant Nº 1181506) This project is centered on the design and implementation of novel polygonal and polyhedral meshing strategies that can be used to solve several scientific and engineering problems such as fracture mechanics simulations in solid mechanics, landscape representation for hydrological distributed

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Release of VEMLab v2.2

  • October 8, 2018
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VEMLab: a MATLAB library for the virtual element method Release of VEMLab v2.2 >>  From VEMLab v2.1 to VEMLab v2.2: Fix disp() in plot_and_ouput_options.m: disp(“Hello”) seems to work only in newer versions of MATLAB. So, it is changed to the standard MATLAB format disp(‘Hello’). Results that are postprocessed in the graphical user interface of GiD

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Release of Veamy v2.1

  • September 15, 2018
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Veamy: an extensible object-oriented C++ library for the virtual element method Release of Veamy v2.1 >>  From Veamy v2.0 to Veamy 2.1: Add several test files for testing Feamy, the FEM module of Veamy. Fix some bugs. Update Veamy Primer: more details are added to sections devoted to using external mesh files (PolyMesher mesh and

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On the behaviour of spherical inclusions in a cylinder under tension loads

  • July 31, 2018
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Ingenius Vol. 19, pp. 69-78, 2018 S. Montero, R. Bustamante, A. Ortiz-Bernardin Abstract In the present paper the behaviour of a hyperelastic body is studied, considering the presence of one, two and more spherical inclusions, under the effect of an external tension load. The inclusions are modelled as nonlinear elastic bodies that undergo small strains.

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Accepted Paper: A volume-averaged nodal projection method for the Reissner-Mindlin plate model

  • July 31, 2018
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Paper Accepted for Publication in Computer Methods in Applied Mechanics and Engineering A. Ortiz-Bernardin, Philip Köbrich, Jack S. Hale, Edgardo Olate-Sanzana, Stéphane P. A. Bordas, Sundararajan Natarajan, “A volume-averaged nodal projection method for the Reissner-Mindlin plate model.” ABSTRACT We introduce a novel meshfree Galerkin method for the solution of Reissner-Mindlin plate problems that is written in

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Release of VEMLab v2.1

  • May 18, 2018
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VEMLab: a MATLAB library for the virtual element method Release of VEMLab v2.1 >>  From VEMLab v2.0.2 to VEMLab v2.1: Add customized wrench domain (for PolyMesher mesh generator only). Add customized plate with a hole domain (for PolyMesher mesh generator only). Add the following test: “square_plate_with_source2_poisson2d.m” in test folder. Add the following test: “plate_with_hole_linelast2d.m” in

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Release of VEMLab v2.0

  • April 10, 2018
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VEMLab: a MATLAB library for the virtual element method Release of VEMLab v2.0 From VEMLab v1.0 to VEMLab v2.0: the following features have been added Two-dimensional Poisson problem. Setup of plot and output options in function “plot_and_output_options” located in folder “config”. Additional plotting options (stresses, strains, fluxes and gradients) to MATLAB figures, text files and

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Accepted Paper: Modal Strain Energy-Based Debonding Assessment of Sandwich Panels Using a Linear Approximation with Maximum Entropy

  • November 21, 2017
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Paper Accepted for Publication in Entropy V. Meruane, Matias Lasen, E. López Droguett, A. Ortiz-Bernardin, “Modal strain energy-based debonding assessment of sandwich panels using a linear approximation with maximum entropy.” ABSTRACT Sandwich structures are very attractive due to their high strength at a minimum weight, and, therefore, there has been a rapid increase in their

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