Post-wrinkle bifurcations in elastic bilayers with modest contrast in modulus

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Post-wrinkle bifurcations in elastic bilayers with modest contrast in modulus

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Title: Post-wrinkle bifurcations in elastic bilayers with modest contrast in modulus
Author: Auguste, Anesia; Jin, Lihua; Suo, Zhigang; Hayward, Ryan C.

Note: Order does not necessarily reflect citation order of authors.

Citation: Auguste, Anesia, Lihua Jin, Zhigang Suo, and Ryan C. Hayward. 2017. Post-Wrinkle Bifurcations in Elastic Bilayers with Modest Contrast in Modulus. Extreme Mechanics Letters 11: 30–36. doi:10.1016/j.eml.2016.11.013.
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Abstract: Wrinkles, folds, creases and other elastic surface instabilities play a crucial role in many systems in nature and engineering. While surface instabilities of ideal bilayer structures with large contrasts in elastic stiffness are well understood, many natural and man-made structures are far from this ideal. To better understand the behavior of systems with modest stiffness contrast, in particular their secondary post-wrinkling bifurcations, we systematically vary the modulus contrast between the film and the substrate through a combination of experiments and finite element simulations. Above a modulus contrast of about 2, but below approximately 14, wrinkles represent the primary bifurcation mode, but can undergo two distinct types of secondary bifurcations upon further compression: (1) a direct transition from wrinkles to creases, and (2) wrinkles that first undergo period doubling, followed by a transition to creases.
Published Version: 10.1016/j.eml.2016.11.013
Terms of Use: This article is made available under the terms and conditions applicable to Open Access Policy Articles, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#OAP
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:29995316
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