Formation of high aspect ratio wrinkles and ridges on elastic bilayers with small thickness contrast
Author:
Affiliation:
1. Department of Polymer Science & Engineering
2. University of Massachusetts
3. Amherst
4. USA
5. School of Engineering and Applied Sciences
6. Kavli Institute for Nanobio Science and Technology
7. Harvard University
8. Cambridge
Abstract
An elastic bilayer composed of a stiff film bonded to a soft substrate forms wrinkles under compression. Experiments and finite element simulations reveal that at small thickness contrast, secondary bifurcations such as period doubling are delayed, providing access to high aspect ratio wrinkles. For high modulus contrast, the periodic wrinkles can evolve into a regular pattern of ridges with even higher aspect ratio.
Funder
Division of Materials Research
Publisher
Royal Society of Chemistry (RSC)
Subject
Condensed Matter Physics,General Chemistry
Link
http://pubs.rsc.org/en/content/articlepdf/2018/SM/C8SM01345D
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