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Impact identification using nonlinear dimensionality reduction and supervised learning

  • October 3, 2019
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Smart Materials and Structures Vol. 28, No. 11, pp. 115005, 2019 V. Meruane, C. Espinoza, E. Lopez Droguett, A. Ortiz-Bernardin Abstract Real-time monitoring systems that can automatically locate and identify impacts as they occur have become increasingly attractive for ensuring safety and preventing catastrophic accidents in aerospace structures. In most cases, a set of piezoelectric

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The Virtual Element Decomposition: A New Paradigm for Developing Nodal Integration Schemes for Meshfree Galerkin Methods

  • January 24, 2019
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A talk given by A. Ortiz-Bernardin at WONAPDE 2019, January 22, 2019, Concepción, Chile. THE VIRTUAL ELEMENT DECOMPOSITION: A NEW PARADIGM FOR DEVELOPING NODAL INTEGRATION SCHEMES FOR MESHFREE GALERKIN METHODS R. SILVA-VALENZUELA a, A. ORTIZ-BERNARDIN a, N. SUKUMAR b AND E. ARTIOLI c Abstract. In meshfree Galerkin methods to solve partial differential equations, a cloud of nodes

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El Método del Elemento Virtual: Teoría y Aplicaciones Usando la Librería VEMLab

  • January 23, 2019
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A talk given by A. Ortiz-Bernardin at JMC2018, October 5, 2018, Punta Arenas, Chile. EL MÉTODO DEL ELEMENTO VIRTUAL: TEORÍA Y APLICACIONES USANDO LA LIBRERÍA VEMLab Alejandro Ortiz-Bernardin*, Edgardo Olate-Sanzana* y Rodrigo Silva-Valenzuela* * Departamento de Ingeniería Mecánica – Universidad de Chile Av. Beauchef 851 – Santiago – CHILE RESUMEN En este trabajo, de carácter pedagógico,

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Veamy: an extensible object-oriented C++ library for the virtual element method

  • December 24, 2018
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Numerical Algorithms Vol. 82, pp. 1189-1220, 2019 A. Ortiz-Bernardin, C. Alvarez, N. Hitschfeld-Kahler, A. Russo, R. Silva-Valenzuela, E. Olate-Sanzana Abstract This paper summarizes the development of Veamy, an object-oriented C++ library for the virtual element method (VEM) on general polygonal meshes, whose modular design is focused on its extensibility. The linear elastostatic and Poisson problems

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Accepted Paper: Veamy: an extensible object-oriented C++ library for the virtual element method

  • December 24, 2018
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Paper Accepted for Publication in Numerical Algorithms Aleandro Ortiz-Bernardin, Catalina Alvarez, Nancy Hitschfeld-Kahler, Alessandro Russo, Rodrigo Silva-Valenzuela, Edgardo Olate-Sanzana, “Veamy: an extensible object-oriented C++ library for the virtual element method” ABSTRACT This paper summarizes the development of Veamy, an object-oriented C++ library for the virtual element method (VEM) on general polygonal meshes, whose modular design is

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Release of VEMLab v2.2.1 (now it runs in Octave!)

  • October 20, 2018
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VEMLab: a MATLAB library for the virtual element method Release of VEMLab v2.2.1 >>  From VEMLab v2.2 to VEMLab v2.2.1: Add option to explicitly switch off all MATLAB figures in function “plot_and_output_options.m”. Facilitate compatibility to run VEMLab in Octave. Update manual with a guide to running VEMLab in Octave. Browse and get the code  

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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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