Simulations of geckos dry adhesion system Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/j9602347n

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  • Simulation models were developed to explore the reversible nature of gecko dry adhesion system. The central idea of this model is that even with a small moment imparted on the contact tip, the seta can be easily ad-adhered. It is shown that this contact condition is very sensitive, but can result in robust adhesion if individual seta is canted and highly flexible. In analogy to the "cone of friction", we consider the "area of adhesion" -- the domain of normal and tangential forces that maintain adhesion. Results demonstrate that this adhesion region is highly asymmetric enabling the gecko to adhere under a variety of loading conditions associated with scuttling horizontally, vertically and inverted. Moreover, under each of these conditions there is a low energy path to de-adhesion. In this model obliquely canted seta (as possessed by geckos) rather than vertically aligned fibers (common in synthetic dry adhesive) provide the most robust adhesion.
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  • description.provenance : Approved for entry into archive by Julie Kurtz(julie.kurtz@oregonstate.edu) on 2014-07-03T17:14:30Z (GMT) No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: bb87e2fb4674c76d0d2e9ed07fbb9c86 (MD5) HuCongcong2014.pdf: 1522421 bytes, checksum: 8aad94e7ef1f93f68af6cb17f51d3aa8 (MD5)
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