Study of Hybrid Microscopic and Macroscopic Buckling in UV Treated PDMS

Study of Hybrid Microscopic and Macroscopic Buckling in UV Treated PDMS

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Author(s)

Author(s): Abbas Sabbah, Ayman Youssef, Pascal Damman

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DOI: 10.18483/ijSci.1149 228 786 67-74 Volume 5 - Nov 2016

Abstract

Plant leaves, insect wings, and other natural surfaces show interesting cases of out-of-plan deformations, which can be attributed to mechanical buckling. This paper deals with a specific type of elastic instabilities, where both microscopic (wrinkles) and macroscopic (global curvature) deformations occur simultaneously. To this end, PDMS narrow sheet was stretched, its surface oxidized, then released. Its deformation was measured and analyzed. A mechanical model considering the effect of wrinkle on elasticity was elaborated; the concept equivalent stiffness was introduced in order to represent this effect. The model was matched with testing results successfully. This model is an interesting tool to explain potentially number of elastic instability phenomena.

Keywords

global buckling, stiff layer, microstructures, wrinkles, elastomers, equivalent stiffness

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International Journal of Sciences is Open Access Journal.
This article is licensed under a Creative Commons Attribution 4.0 International (CC BY 4.0) License.
Author(s) retain the copyrights of this article, though, publication rights are with Alkhaer Publications.

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