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An isogeometric approach to cohesive zone modeling

Authors

  • Clemens V. Verhoosel,

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    1. Department of Mechanical Engineering, Eindhoven University of Technology, 5600 MB, Eindhoven, The Netherlands
    2. Institute for Computational Engineering and Sciences, University of Texas at Austin, 78712, Austin, TX, U.S.A.
    • Department of Mechanical Engineering, Eindhoven University of Technology, 5600 MB, Eindhoven, The Netherlands
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  • Michael A. Scott,

    1. Institute for Computational Engineering and Sciences, University of Texas at Austin, 78712, Austin, TX, U.S.A.
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  • René de Borst,

    1. Department of Mechanical Engineering, Eindhoven University of Technology, 5600 MB, Eindhoven, The Netherlands
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  • Thomas J. R. Hughes

    1. Institute for Computational Engineering and Sciences, University of Texas at Austin, 78712, Austin, TX, U.S.A.
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Abstract

The possibility of enhancing a B-spline basis with discontinuities by means of knot insertion makes isogeometric finite elements a suitable candidate for modeling discrete cracks. In this contribution we use isogeometric finite elements to discretize the cohesive zone formulation for failure in materials. In the case of a pre-defined interface, non-uniform rational B-splines are used to obtain an efficient discretization. In the case that propagating cracks are considered, T-splines are found to be more suitable, due to their ability to generate localized discontinuities. Various numerical simulations demonstrate the suitability of the isogeometric approach to cohesive zone modeling. Copyright © 2010 John Wiley & Sons, Ltd.

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