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A maximum entropy approach to assess debonding in honeycomb aluminum plates

  • May 23, 2014
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Entropy Vol. 16, No. 5, pp. 2869-2889, 2014 V. Meruane, V. del Fierro, A. Ortiz-Bernardin Abstract Honeycomb sandwich structures are used in a wide variety of applications. Nevertheless, due to manufacturing defects or impact loads, these structures can be subject to imperfect bonding or debonding between the skin and the honeycomb core. The presence of

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Paper Submitted: Meshfree Volume-Averaged Nodal Projection Method for Nearly-Incompressible Elasticity

  • May 13, 2014
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A. Ortiz-Bernardin, J.S. Hale, C. J. Cyron, “Meshfree volume-averaged nodal projection method for nearly-incompressible elasticity,” submitted. ABSTRACT We present a displacement-based Galerkin meshfree method for the analysis of nearly-incompressible linear elastic solids, where low-order simplicial tessellations (i.e., 3-node triangular or 4-node tetrahedral meshes) are used as a background structure for numerical integration of the weak

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Turbulence in Wind Farm Boundary Layers

  • March 20, 2014
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Plenary Lecture, 14th Pan-American Congress of Applied Mechanics Charles Meneveau Louis M. Sardella Professor of Mechanical Engineering, and Associate Director, Institute for Data Intensive Engineering and Science Johns Hopkins University Baltimore, MD 21218, U.S.A.  Phone: 410-516-7802, Fax: 410-516-7254, meneveau@jhu.edu Similar to other renewable energy sources, wind energy is characterized by low power density. Hence, in order

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The Mechanics and Mathematics of Bodies Described by Implicit Constitutive Equations: Specific Applications

  • March 20, 2014
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Plenary Lecture, 14th Pan-American Congress of Applied Mechanics K. R. Rajagopal Distinguished Professor, Regents Professor, Forsyth Chair in Mechanical Engineering, Professor of Mathematics, Professor of Biomedical Engineering, Professor of Civil Engineering, Professor of Chemical Engineering, Senior Research Scientist, Texas Transportation Institute Department of Mechanical Engineering, Room 314, Engineering Physics Building, College Station, TX 77843-3 123, U.S.A.

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The Mechanics and Mathematics of Bodies Described by Implicit Constitutive Equations: General Considerations

  • March 20, 2014
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Plenary Lecture, 14th Pan-American Congress of Applied Mechanics K. R. Rajagopal Distinguished Professor, Regents Professor, Forsyth Chair in Mechanical Engineering, Professor of Mathematics, Professor of Biomedical Engineering, Professor of Civil Engineering, Professor of Chemical Engineering, Senior Research Scientist, Texas Transportation Institute Department of Mechanical Engineering, Room 314, Engineering Physics Building, College Station, TX 77843-3 123, U.S.A.

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Polygonal and Polyhedral Finite Element Methods in Computational Mechanics

  • February 27, 2014
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Plenary Lecture, 14th Pan-American Congress of Applied Mechanics N. Sukumar Department of Civil and Environmental Engineering University of California, Davis http://dilbert.engr.ucdavis.edu/~suku Generalized barycentric coordinates (e.g., Wachspress, mean value coordinates, maximum-entropy coordinates, and harmonic coordinates) have been widely adopted for applications in geometry processing and as basis functions in polygonal and polyhedral finite element methods. In recent

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Dynamics of Cracks with Interacting Faces

  • February 27, 2014
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Professor  Igor A. GUZ  Sixth Century Chair in Solid Mechanics Head of School of Engineering University of Aberdeen Fraser Noble Building, Aberdeen AB24 3UE, Scotland e-mail: i.guz@abdn.ac.uk http://www.abdn.ac.uk/engineering/people/profiles/i.guz The presence of cracks and delaminations considerably decreases the strength and the lifetime of engineering structures as well as significantly increases the cost of exploitation. In particular,

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A numerical study of elastic bodies that are described by constitutive equations that exhibit limited strains

  • November 25, 2013
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International Journal of Solids and Structures Vol. 51, No. 3-4, pp. 875-885, 2014 A. Ortiz-Bernardin, R. Bustamante, K.R. Rajagopal Abstract Recently, a very general and novel class of implicit bodies has been developed to describe the elastic response of solids. It contains as a special subclass the classical Cauchy and Green elastic bodies. Within the

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Maximum-entropy meshfree method for compressible and near-incompressible elasticity

  • November 25, 2013
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Computer Methods in Applied Mechanics and Engineering Vol. 119, No. 25-28, pp. 1859-1871, 2010 A. Ortiz , M.A. Puso, N. Sukumar Abstract Numerical integration errors and volumetric locking in the near-incompressible limit are two outstanding issues in Galerkin-based meshfree computations. In this paper, we present a modified Gaussian integration scheme on background cells for meshfree

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Maximum-entropy meshfree method for incompressible media problems

  • November 25, 2013
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Finite Elements in Analysis and Design Vol. 47, No. 6, pp. 572-585, 2011 A. Ortiz , M.A. Puso, N. Sukumar Abstract A novel maximum-entropy meshfree method that we recently introduced in Ortiz et al. (2010) [1] is extended to Stokes flow in two dimensions and to three-dimensional incompressible linear elasticity. The numerical procedure is aimed

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