Publication: Friction of Wrinkles

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Title Friction of Wrinkles
Authors/Editors* H. Mohammadi, M. H. Müser
Where published* Physical Review Letters
How published* Journal
Year* 2010
Volume 105
Pages 224301
Sufficiently thin elastic sheets wrinkle when they are in contact with a small adhesive counterbody. Despite significant progress on the dynamics of wrinkle formation and morphology, little is known about how wrinkles impede the relative sliding motion of the counterbody. Using molecular dynamics we demonstrate that instabilities are likely to occur during sliding when the wrinkle pattern has asymmetries not present in the counterbody. The instabilities then cause Coulomb's friction law. The behavior can be rationalized in terms of simple models for multistable elastic manifolds.
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