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.
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October 2017
Research-Article
A Model of Packaging Folds in Thin Metal-Polymer Laminates
Gabriel Secheli,
Gabriel Secheli
Surrey Space Centre,
University of Surrey,
Surrey GU2 7XH, UK
University of Surrey,
Surrey GU2 7XH, UK
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Andrew Viquerat,
Andrew Viquerat
Department of Mechanical
Engineering Sciences,
University of Surrey,
Surrey GU2 7XH, UK
e-mail: a.viquerat@surrey.ac.uk
Engineering Sciences,
University of Surrey,
Surrey GU2 7XH, UK
e-mail: a.viquerat@surrey.ac.uk
Search for other works by this author on:
Guglielmo S. Aglietti
Guglielmo S. Aglietti
Surrey Space Centre
University of Surrey,
Surrey GU2 7XH, UK
University of Surrey,
Surrey GU2 7XH, UK
Search for other works by this author on:
Gabriel Secheli
Surrey Space Centre,
University of Surrey,
Surrey GU2 7XH, UK
University of Surrey,
Surrey GU2 7XH, UK
Andrew Viquerat
Department of Mechanical
Engineering Sciences,
University of Surrey,
Surrey GU2 7XH, UK
e-mail: a.viquerat@surrey.ac.uk
Engineering Sciences,
University of Surrey,
Surrey GU2 7XH, UK
e-mail: a.viquerat@surrey.ac.uk
Guglielmo S. Aglietti
Surrey Space Centre
University of Surrey,
Surrey GU2 7XH, UK
University of Surrey,
Surrey GU2 7XH, UK
Contributed by the Applied Mechanics Division of ASME for publication in the JOURNAL OF APPLIED MECHANICS. Manuscript received June 16, 2017; final manuscript received July 31, 2017; published online August 22, 2017. Assoc. Editor: A. Amine Benzerga.
J. Appl. Mech. Oct 2017, 84(10): 101005 (11 pages)
Published Online: August 22, 2017
Article history
Received:
June 16, 2017
Revised:
July 31, 2017
Citation
Secheli, G., Viquerat, A., and Aglietti, G. S. (August 22, 2017). "A Model of Packaging Folds in Thin Metal-Polymer Laminates." ASME. J. Appl. Mech. October 2017; 84(10): 101005. https://doi.org/10.1115/1.4037503
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