Mechanical behaviour of a creased thin strip

Liu, J, Xu, S, Wen, G and Xie, M 2018, 'Mechanical behaviour of a creased thin strip', Mechanical Sciences, vol. 9, no. 1, pp. 91-102.

Document type: Journal Article
Collection: Journal Articles

Title Mechanical behaviour of a creased thin strip
Author(s) Liu, J
Xu, S
Wen, G
Xie, M
Year 2018
Journal name Mechanical Sciences
Volume number 9
Issue number 1
Start page 91
End page 102
Total pages 12
Publisher Copernicus GmbH
Abstract In this study the mechanical behaviour of a creased thin strip under opposite-sense bending was investigated. It was found that a simple crease, which led to the increase of the second moment of area, could significantly alter the overall mechanical behaviour of a thin strip, for example the peak moment could be increased by 100 times. The crease was treated as a cylindrical segment of a small radius. Parametric studies demonstrated that the geometry of the strip could strongly influence its flexural behaviour. We showed that the uniform thickness and the radius of the creased segment had the greatest and the least influence on the mechanical behaviour, respectively. We further revealed that material properties could dramatically affect the overall mechanical behaviour of the creased strip by gradually changing the material from being linear elastic to elastic-perfect plastic. After the formation of the fold, the moment of the two ends of the strip differed considerably when the elasto-plastic materials were used, especially for materials with smaller tangent modulus in the plastic range. The deformation patterns of the thin strips from the finite element simulations were verified by physical models made of thin metal strips. The findings from this study provide useful information for designing origami structures for engineering applications using creased thin strips.
Subject Mechanical Engineering not elsewhere classified
DOI - identifier 10.5194/ms-9-91-2018
Copyright notice © Author(s) 2018. This work is distributed under the Creative Commons Attribution 4.0 License.
ISSN 2191-9151
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