Selva, Pierre and Dalverny, Olivier and Mistou, Sébastien and Karama, Moussa and Alexis, Joël and Deramecourt, Arnaud Modélisation des assemblages de ballons pressurisés stratosphériques. (2008) Mécanique & Industries, 9 (2). 159-165. ISSN 1296-2139
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(Document in English)
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Official URL: http://dx.doi.org/10.1051/meca:2008021
Abstract
Long duration super-pressure balloon design and manufacturing is a great challenge for the CNES in scientific ballooning. They are made of 50 µm thick polymer films (PET/PA/PET) which are joined with 23 µm thick adhesive PET bands. To date, during flight missions, a real problem appears: some balloons explode prematurely. This is why this study deals with the mechanical behaviour of the stratospheric pressurized balloons and particularly with the assembly of the constitutive materials. Firstly, a nanoindentation test campaign makes it possible to identify the elastic properties of the materials directly in the assembly at two different temperatures. Then, we simulate a nominal assembly in two approaches: 2D and 3D. More particularly, we present an example concerning a defect of the junction in 3D approach using the submodeling technique. Finally, we use the factorial design method at two levels and finite-element models to study the influence of the various conception parameters on the mechanical behaviour of the assembly.
Item Type: | Article |
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Additional Information: | Thanks to EDP Sciences editor. The definitive version is available at http://www.cambridge.org. The original PDF of the article can be found at Mécanique & Industries website : http://dx.doi.org/10.1051/meca:2008021 |
HAL Id: | hal-00796649 |
Audience (journal): | National peer-reviewed journal |
Uncontrolled Keywords: | |
Institution: | French research institutions > Centre National d'Études Spatiales - CNES (FRANCE) Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE) |
Laboratory name: | |
Statistics: | download |
Deposited On: | 26 Feb 2013 11:23 |
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