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Failure of polyethylene thin film membrane structures
dc.contributor.author | Hegyi, Dezso |
dc.contributor.author | Li, Jun |
dc.contributor.author | Pellegrino, Sergio |
dc.date.accessioned | 2020-04-30T10:48:16Z |
dc.date.available | 2020-04-30T10:48:16Z |
dc.date.issued | 2013 |
dc.identifier.isbn | 978-84-941686-0-4 |
dc.identifier.uri | http://hdl.handle.net/2117/185902 |
dc.description.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. |
dc.format.extent | 16 p. |
dc.language.iso | eng |
dc.publisher | CIMNE |
dc.subject | Àrees temàtiques de la UPC::Matemàtiques i estadística::Anàlisi numèrica::Mètodes en elements finits |
dc.subject.lcsh | Finite element method |
dc.subject.lcsh | Air-supported structures |
dc.subject.other | StratoFilm, J-integral, Viscoelasticity, Free Volume Model |
dc.title | Failure of polyethylene thin film membrane structures |
dc.type | Conference report |
dc.subject.lemac | Estructures pneumàtiques |
dc.rights.access | Open Access |
local.citation.contributor | Structural Membranes 2013 |
local.citation.publicationName | Textiles composites and inflatable structures VI : proceedings of the VI International Conference on Textile Composites and Inflatable Structures, Barcelona, Spain. 9-11 October, 2013 |
local.citation.startingPage | 559 |
local.citation.endingPage | 574 |