Failure of Polyethylene Thin Film Membrane Structures
- Creators
- Hegyi, Dezso
- Li, Jun
-
Pellegrino, Sergio
- Others:
- Bletzinger, K.-U.
- Kröplin, B.
- Oñate, E.
Abstract
The failure of balloons made of Linear Low Density PolyEthylene (LLDPE) is investigated. The chosen film is 38 μm thick StratoFilm 420, currently used for the NASA Super-Pressure balloons [1]. The visco-elastic behaviour of the film has been extensively studied and is already accounted for in the balloon design [2, 3, 5]. The next step in the development of accurate predictive tools for super-pressure balloons requires models that capture the transition from visco-elastic and visco-plastic behaviour to fracture. It is shown that realistic estimates of failure of LLDPE membrane structures can be obtained from visco-elastic simulations based on the non-linear visco-elastic model of the balloon film proposed by Kwok [5], supplemented with a fracture resistance criterion derived from the experimentally-based J-integral.
Additional Information
© 2013 CIMNE. We thank Prof. W. Knauss for helpful comments and advice. DH research at the California Institute of Technology was supported by an Imre Koranyi Civi Engineering Fellowship from the Thomas Cholnoky Foundation. Financial support from the NASA Balloon Research Program is gratefully acknowledged.Attached Files
Published - 2013_Failureofpolyethilenthinfilmmembranestructures.pdf
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Additional details
- Eprint ID
- 98072
- Resolver ID
- CaltechAUTHORS:20190821-102001622
- Thomas Cholnoky Foundation
- NASA
- Created
-
2019-08-21Created from EPrint's datestamp field
- Updated
-
2019-10-03Created from EPrint's last_modified field
- Caltech groups
- GALCIT