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A Model of Packaging Folds in Thin Metal-Polymer Laminates

Secheli, Gabriel, Viquerat, Andrew and Aglietti, Guglielmo (2017) A Model of Packaging Folds in Thin Metal-Polymer Laminates Journal of Applied Mechanics.

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Abstract

Thin metal-polymer laminates make excellent materials for use in inflatable space structures. By inflating a stowed envelope using pressurized gas, and by increasing the internal pressure slightly beyond the yield point of the metal films, the shell rigidizes in the deployed shape. Structures constructed with such materials retain the deployed geometry once the inflation gas has either leaked away, or it has been intentionally vented. For flight, these structures must be initially folded and stowed. This paper presents a numerical method for predicting the force required to achieve a given fold radius in a three-ply metal-polymer-metal laminate and to obtain the resultant springback. A coupon of the laminate is modeled as a cantilever subject to an increasing tip force. Fully elastic, elastic-plastic, relaxation and springback stages are included in the model. The results show good agreement when compared with experimental data at large curvatures.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Mechanical Engineering Sciences
Authors :
NameEmailORCID
Secheli, Gabrielg.secheli@surrey.ac.ukUNSPECIFIED
Viquerat, Andrewa.viquerat@surrey.ac.ukUNSPECIFIED
Aglietti, Guglielmog.aglietti@surrey.ac.ukUNSPECIFIED
Date : 3 November 2017
Copyright Disclaimer : Copyright 2017 American Society of Mechanical Engineers
Depositing User : Melanie Hughes
Date Deposited : 03 Aug 2017 12:43
Last Modified : 03 Aug 2017 12:43
URI: http://epubs.surrey.ac.uk/id/eprint/841836

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