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Journal of Thermoplastic Composite Materials
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Finite Element Modelling of Thermoplastic Matrix Composite Gas Cylinders

P.J. Antunes

Polymer Engineering Department, University of Minho 4800-058 Guimarães, Portugal, pantunes{at}dep.uminho.pt

G.R. Dias

Polymer Engineering Department, University of Minho 4800-058 Guimarães, Portugal

J.P. Nunes

Polymer Engineering Department, University of Minho 4800-058 Guimarães, Portugal

F.W.J. Van Hattum

Polymer Engineering Department, University of Minho 4800-058 Guimarães, Portugal

T. Oliveira

AMTROL-ALFA Metalomecânica, SA, P.O. Box 37, Brito 4801-909 Guimarães, Portugal

Continuous glass/polypropylene (GF/PP) commingled fiber tapes were employed to produce wrapped pressure gas vessels for domestic applications by using filament winding. The vessel structural-wall was built using a hybrid solution consisting in a very thin steel liner over wrapped by the filament wounded GF/PP commingled fiber tape layers. FEM analysis was used to evaluate if the composite gas pressure vessel based on the hybrid solution (steel liner + glass fiber reinforced thermoplastic) is capable to withstand the following pressure requirements: the metallic liner, alone, a minimum burst pressure of 4MPa and whole hybrid composite vessel minima internal test and burst pressures of 3 MPa and 6.75 MPa, respectively. Finally, gas pressure vessel prototypes manufactured in industrial cycle conditions were submitted to burst pressure tests to prove that they accomplish all European standard strength requirements.

Key Words: finite element analysis • thermoplastic matrix composite • composite gas cylinder • mechanical behavior • filament winding • glass/polypropylene commingled tapes.

Journal of Thermoplastic Composite Materials, Vol. 21, No. 5, 411-441 (2008)
DOI: 10.1177/0892705708089484
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