Abstract
In this paper, geometrically non-linear post-buckling analyses were performed to study the effect of sheet thickness, deployment angle, and load ratio on the crease-wrinkle interaction. A square sheet configuration with a single transverse crease was modeled using thin shell elements. The analysis proceeded by initially providing a realistic deployed state of a creased membrane sheet. Then an uneven corner loading was applied to introduce wrinkling. The effects of the induced anisotropy from the crease on the fine-scale detail of the wrinkle evolution, as a function of sheet thickness, loading, and crease deployment angle were systematically investigated. Significant differences were found in sheet compliance and crease-wrinkle interaction as these parameters were varied.
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This paper was recommended for publication in revised form by Associate Editor Heung Soo Kim
Kyeongsik Woo received his B.S. and M.S. degrees in aerospace engineering from Seoul National University, Korea in 1985 and 1987. He received his Ph.D in aerospace engineering from Texas A&M University, USA in 1993. Currently he is a professor of School of Civil Engineering at Chungbuk National University, Korea. His research interests include membrane wrinkling, creasing and tearing, flexible textile composites, fracture mechanics by cohesive zone modeling, and high velocity impact behavior of composite materials.
Christopher H. Jenkins is Professor and Head of Mechanical & Industrial Engineering at Montana State University. For nearly 20 years he has investigated the mechanics, materials, and design of highly compliant (flexible) structures, much of which has been inspired by biology. Dr. Jenkins is an Associate Fellow of the American Institute of Aeronautics and Astronautics. He has edited 4 technical books, published 2 textbooks, and co-authored over 180 peer-reviewed journal and conference papers.
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Woo, K., Jenkins, C.H. Analysis of crease-wrinkle interaction for thin sheets. J Mech Sci Technol 26, 905–916 (2012). https://doi.org/10.1007/s12206-011-1247-5
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DOI: https://doi.org/10.1007/s12206-011-1247-5