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Consistent and stable meshfree Galerkin methods using the virtual element decomposition

  • January 24, 2017
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International Journal for Numerical Methods in Engineering Vol. 112, No. 7, pp 655-684, 2017 A. Ortiz-Bernardin, A. Russo, N. Sukumar Abstract Over the past two decades, meshfree methods have undergone significant development as a numerical tool to solve partial differential equations (PDEs). In contrast to finite elements, the basis functions in meshfree methods are smooth

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Precauciones acerca del uso del elemento beam en simulaciones por el método del elemento finito

  • December 2, 2016
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(The following document is an unpublished article.) A. Ortiz-Bernardin Resumen En este artículo se presenta la resolución numérica mediante el método del elemento finito de dos problemas de mecánica estructural, con los que se pretende precaver al diseñador de estructuras de las problemáticas que podrían resultar de modelaciones basadas en el elemento finito tipo beam, perjudicando

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Paper Submitted: Consistent and stable meshfree Galerkin methods using the virtual element decomposition

  • November 7, 2016
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A. Ortiz-Bernardin, A. Russo, N. Sukumar, “Consistent and stable meshfree Galerkin methods using the virtual element decomposition,” submitted. ABSTRACT Over the past two decades, meshfree methods have undergone significant development as a numerical tool to solve partial differential equations (PDEs). In contrast to finite elements, the basis functions in meshfree method are smooth (nonpolynomial functions),

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On the use of implicit constitutive relations to model the behaviour of elastic and inelastic deformations in continua: Applications to the mathematical modelling of rock

  • August 24, 2016
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2016 – 2020 Principal Investigator: Roger Bustamante. Co-Investigator: Alejandro Ortiz-Bernardin. Project funded by CONICYT-FONDECYT (Grant Nº 1160030) Geomaterials such as rock and soil can show a plethora of nonlinear phenomena regarding their mechanical behaviour, such as: hysteresis (i.e., dependency of the mechanical properties in the load history), nonlinear relations between stresses and strains (even in the

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Accepted Paper: A novel impact identification algorithm based on a linear approximation with maximum entropy

  • August 8, 2016
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Paper Accepted for Publication in Smart Materials and Structures N. Sanchez, V. Meruane, A. Ortiz-Bernardin, “A novel impact identification algorithm based on a linear approximation with maximum entropy.” ABSTRACT This article presents a novel impact identification algorithm that uses a linear approximation handled by a statistical inference model based on the maximum-entropy principle, termed linear

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A novel impact identification algorithm based on a linear approximation with maximum entropy

  • August 8, 2016
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Smart Materials and Structures Vol. 25, No. 9, pp. 095050, 2016 N. Sanchez, V. Meruane, A. Ortiz-Bernardin Abstract This article presents a novel impact identification algorithm that uses a linear approximation handled by a statistical inference model based on the maximum-entropy principle, termed linear approximation with maximum entropy (LME). Unlike other regression algorithms as Artificial

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Paper Accepted: Linear smoothed polygonal and polyhedral finite elements

  • June 1, 2016
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Paper Accepted for Publication in International Journal for Numerical Methods in Engineering A. Francis, A. Ortiz-Bernardin, SPA. Bordas, S. Natarajan, “Linear smoothed polygonal and polyhedral finite elements.” ABSTRACT It was observed in [1, 2] that the strain smoothing technique over higher order elements and arbitrary polytopes yields less accurate solutions than other techniques such as

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Tenure-Track Faculty Position in Mechanical Engineering at University of Chile

  • March 14, 2016
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The Department of Mechanical Engineering (http://www.dimec.uchile.cl/) at University of Chile invites applications for one full time tenure-track faculty position in Mechanical Engineering. Applicants must have deep interest in undergraduate and graduate teaching, as well as the purpose to conduct long-term, externally funded research programs at international level. Candidates are also expected to maintain fruitful work

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