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Release of VEMLAB 2.4.1

  • June 27, 2022
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VEMLAB: a MATLAB library for the virtual element method   Release of VEMLAB 2.4.1 >>  From VEMLAB 2.4 to VEMLAB 2.4.1: Fix some bugs in create_polygonal_mesh.m Fix several bugs in the writing of output files. Affected functions:postprocess_numerical_solution_linelast2d.mwrite_solution_txt_linelast2d.mplot_numerical_solution_poisson2d.mpostprocess_numerical_solution_poisson2d.mwrite_solution_CPP_poisson2d.mwrite_solution_txt_poisson2d.mwrite_solution_GiD_poisson2d.m Optimize function T3toPolyMesh.m Browse and get the code

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Development and assessment of a combined nodal integration and virtual element method for small and large deformation solid mechanics simulations

  • June 20, 2022
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2012 – 2025 Principal Investigator: Alejandro Ortiz-Bernardin. Project funded by CONICYT-FONDECYT (Grant Nº 1221325) Nodal integration is a numerical integration scheme for Galerkin weak forms, where the weak form integrals are sampled at the nodes. In this type of scheme, state and history-dependent variables become nodal quantities and thus in nonlinear computations they are tracked only

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POLYLLA: polygonal meshing algorithm based on terminal-edge regions

  • June 18, 2022
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Engineering with Computers Online first articles, 2022 S. Salinas-Fernández, Nancy Hitschfeld-Kahler, A. Ortiz-Bernardin, Hang Si Abstract This paper presents an algorithm to generate a new kind of polygonal mesh obtained from triangulations. Each polygon is built from a terminal-edge region surrounded by edges that are not the longest-edge of any of the two triangles that

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Release of VEMLAB 2.4

  • January 13, 2022
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VEMLAB: a MATLAB library for the virtual element method   Release of VEMLAB 2.4   >>  From VEMLAB 2.3 to VEMLAB 2.4: Add several options for in plot_and_output_options.m. New options: delete existing output files, plot front/isometric view of the figure, print and save pdf figures, save .fig figures, set figure resolution, color system for the

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Accepted Paper: A novel nonlinear constitutive model for rock: numerical assessment and benchmarking

  • August 29, 2020
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Paper Accepted for Publication in Applications in Engineering Science R. Bustamante, S. Montero, A. Ortiz-Bernardin, “A novel nonlinear constitutive model for rock: numerical assessment and benchmarking” ABSTRACT In this article, we assess and benchmark a novel nonlinear constitutive relation for modeling the behavior of rock, in which the linearized strain tensor is a function of

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Paper Published in the ICCS 2020: Convex polygon packing based meshing algorithm for modeling of rock and porous media

  • June 30, 2020
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Paper Accepted for Publication in ICCS 2020: Computational Science – ICCS 2020 J. Torres, N. Hitschfeld, R. O. Ruiz and A. Ortiz-Bernardin, “Convex Polygon Packing Based Meshing Algorithm for Modeling of Rock and Porous Media.” ABSTRACT In this work, we propose new packing algorithm designed for the generation of polygon meshes to be used for modeling

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A maximum entropy supervised learning algorithm for the identification of skin/core debonding in honeycomb aluminium panels

  • April 11, 2020
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The Twelfth International Conference on Computational Structures Technology (CST2014) 2 – 5 September 2014, Naples, Italy Proceedings of CST2014 Civil-Comp Press, Stirlingshire, UK, Paper 120, 2014 V. Meruane, V. del Fierro and A. Ortiz-Bernardin Abstract Honeycomb sandwich structures are used in a wide variety of applications. Nevertheless, due to manufacturing defects or impact loads, these

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A Meshfree Nodal Integration Method for Elastic and Elastoplastic Applications Using The Virtual Element Decomposition

  • December 23, 2019
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A talk given by A. Ortiz-Bernardin at COMPLAS 2019, September 3, 2019, Barcelona, Spain. A MESHFREE NODAL INTEGRATION METHOD FOR ELASTIC AND ELASTOPLASTIC APPLICATIONS USING THE VIRTUAL ELEMENT DECOMPOSITION A. ORTIZ-BERNARDIN a, E. ARTIOLI b, AND R. SILVA-VALENZUELA a Abstract. In meshfree Galerkin methods to solve partial differential equations, a cloud of nodes is used

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