Cargando…

Modelling of the frictional behaviour of the snake skin covered by anisotropic surface nanostructures

Previous experimental data clearly revealed anisotropic friction on the ventral scale surface of snakes. However, it is known that frictional properties of the ventral surface of the snake skin range in a very broad range and the degree of anisotropy ranges as well to a quite strong extent. This mig...

Descripción completa

Detalles Bibliográficos
Autores principales: Filippov, Alexander E., Gorb, Stanislav N.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4804221/
https://www.ncbi.nlm.nih.gov/pubmed/27005001
http://dx.doi.org/10.1038/srep23539
_version_ 1782422986699046912
author Filippov, Alexander E.
Gorb, Stanislav N.
author_facet Filippov, Alexander E.
Gorb, Stanislav N.
author_sort Filippov, Alexander E.
collection PubMed
description Previous experimental data clearly revealed anisotropic friction on the ventral scale surface of snakes. However, it is known that frictional properties of the ventral surface of the snake skin range in a very broad range and the degree of anisotropy ranges as well to a quite strong extent. This might be due to the variety of species studied, diversity of approaches used for the friction characterization, and/or due to the variety of substrates used as a counterpart in the experiments. In order to understand the interactions between the nanostructure arrays of the ventral surface of the snake skin, this study was undertaken, which is aimed at numerical modeling of frictional properties of the structurally anisotropic surfaces in contact with various size of asperities. The model shows that frictional anisotropy appears on the snake skin only on the substrates with a characteristic range of roughness, which is less or comparable with dimensions of the skin microstructure. In other words, scale of the skin relief should reflect an adaptation to the particular range of surfaces asperities of the substrate.
format Online
Article
Text
id pubmed-4804221
institution National Center for Biotechnology Information
language English
publishDate 2016
publisher Nature Publishing Group
record_format MEDLINE/PubMed
spelling pubmed-48042212016-03-23 Modelling of the frictional behaviour of the snake skin covered by anisotropic surface nanostructures Filippov, Alexander E. Gorb, Stanislav N. Sci Rep Article Previous experimental data clearly revealed anisotropic friction on the ventral scale surface of snakes. However, it is known that frictional properties of the ventral surface of the snake skin range in a very broad range and the degree of anisotropy ranges as well to a quite strong extent. This might be due to the variety of species studied, diversity of approaches used for the friction characterization, and/or due to the variety of substrates used as a counterpart in the experiments. In order to understand the interactions between the nanostructure arrays of the ventral surface of the snake skin, this study was undertaken, which is aimed at numerical modeling of frictional properties of the structurally anisotropic surfaces in contact with various size of asperities. The model shows that frictional anisotropy appears on the snake skin only on the substrates with a characteristic range of roughness, which is less or comparable with dimensions of the skin microstructure. In other words, scale of the skin relief should reflect an adaptation to the particular range of surfaces asperities of the substrate. Nature Publishing Group 2016-03-23 /pmc/articles/PMC4804221/ /pubmed/27005001 http://dx.doi.org/10.1038/srep23539 Text en Copyright © 2016, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Filippov, Alexander E.
Gorb, Stanislav N.
Modelling of the frictional behaviour of the snake skin covered by anisotropic surface nanostructures
title Modelling of the frictional behaviour of the snake skin covered by anisotropic surface nanostructures
title_full Modelling of the frictional behaviour of the snake skin covered by anisotropic surface nanostructures
title_fullStr Modelling of the frictional behaviour of the snake skin covered by anisotropic surface nanostructures
title_full_unstemmed Modelling of the frictional behaviour of the snake skin covered by anisotropic surface nanostructures
title_short Modelling of the frictional behaviour of the snake skin covered by anisotropic surface nanostructures
title_sort modelling of the frictional behaviour of the snake skin covered by anisotropic surface nanostructures
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4804221/
https://www.ncbi.nlm.nih.gov/pubmed/27005001
http://dx.doi.org/10.1038/srep23539
work_keys_str_mv AT filippovalexandere modellingofthefrictionalbehaviourofthesnakeskincoveredbyanisotropicsurfacenanostructures
AT gorbstanislavn modellingofthefrictionalbehaviourofthesnakeskincoveredbyanisotropicsurfacenanostructures