Hierarchical multiple peeling simulations

Bosia, Federico and Colella, S. and Mattoli, Virgilio and Mazzolai, Barbara and Pugno, Nicola M. (2014) Hierarchical multiple peeling simulations. In «RSC Advances», vol. 4, n. 48 London, UK : The Royal Society of Chemistry, pp. 25447-25452.

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    The phenomenon of the exceptional dry adhesion achieved by some natural biological materials has been widely investigated in recent years. In particular, the analysis of the terminal elements of gecko pads and their specific structure and topology has led to the development of bioinspired synthetic fibrillar adhesives, including mushroom-shaped tips. To model the expected adhesion and detachment behaviour of multiple contacts, only recently the last author has derived a theory of multiple peeling, extending the pioneering energy-based single peeling theory of Kendall, including large deformations and pre-stretching. In this contribution, we study the problem of the adhesion of single and multiple contacts using finite element analysis, with the aim of studying complex peeling geometries. Both non-hierarchical tape-like and hierarchical geometries are considered, and the adhesive properties are compared, showing a marked improvement in the latter case. Results are promising and the numerical approach can be exploited in future attempts to determine optimal configurations and improve the adhesion of artificial bioinspired structures.

    Item Type: Article in journal
    FP7 Grant Agreement Number: European Research Council/StG Ideas 2011 - BIHSNAM/EU/FP7/279985, European Research Council/PoC 2013-I - REPLICA2/EU/FP7/619448, European Research Council/PoC 2013-I - KNOTOUGH/EU/FP7/632277, COST/EU/FP/TD0906
    Department or Research center: Civil, Environmental and Mechanical Engineering
    Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA350 Applied Mechanics
    T Technology > TA Engineering (General). Civil engineering (General) > TA630 Structural Engineering
    Repository staff approval on: 25 Feb 2015 15:04

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