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Multiscale modelling and simulation of the deformation and adhesion of a single gecko seta

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  • Roger A. Sauer

Abstract

A 3D multiscale model is presented which describes the adhesion and deformation of a gecko seta. The multiscale approach combines three models at different length scales: at the top level, on the order of several micrometers, a nonlinear finite element beam model is chosen to capture the branched microstructure of the gecko seta. At the intermediate level, on the order of several nanometers, a second finite element model is used to capture the detailed behaviour of the seta tips, the so-called spatulae. At the lowest level, on the order of a few angstroms, a molecular interaction potential is used to describe the van der Waals adhesion forces between spatulae and substrate. Coarse-graining techiques are used to bridge the scale between the model levels. To illustrate and validate the proposed gecko seta model, numerical pull-off simulations are shown and compared to experimental data from the literature.

Suggested Citation

  • Roger A. Sauer, 2009. "Multiscale modelling and simulation of the deformation and adhesion of a single gecko seta," Computer Methods in Biomechanics and Biomedical Engineering, Taylor & Francis Journals, vol. 12(6), pages 627-640.
    • Handle: RePEc:taf:gcmbxx:v:12:y:2009:i:6:p:627-640
    DOI: 10.1080/10255840902802917
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    References listed on IDEAS

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    1. Kellar Autumn & Yiching A. Liang & S. Tonia Hsieh & Wolfgang Zesch & Wai Pang Chan & Thomas W. Kenny & Ronald Fearing & Robert J. Full, 2000. "Adhesive force of a single gecko foot-hair," Nature, Nature, vol. 405(6787), pages 681-685, June.
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    Cited by:

    1. Roger A. Sauer & Matthias Holl, 2013. "A detailed 3D finite element analysis of the peeling behaviour of a gecko spatula," Computer Methods in Biomechanics and Biomedical Engineering, Taylor & Francis Journals, vol. 16(6), pages 577-591, June.

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