Experimental and numerical analysis of interply porosities in composites thermoforming

Damien Soulat (1) , Anthony Cheruet (1) , Philippe Boisse (2) , Serge Maison-Le Poëc (3) , S. Guinard (4)

1 LMPS - Laboratoire de Mécanique Paris-Saclay
2 LaMCoS - Laboratoire de Mécanique des Contacts et des Structures [Villeurbanne]
3 EADS - European Aeronautic Defense and Space
4 Airbus Group Innovations [Toulouse]

Effective forming of Continuous Fiber Reinforced Thermoplastic Composites requires a detailed understanding and modeling of the forming mechanisms and the development of computational techniques for process simulation. A re-compaction stage is performed at the end of the process in order to avoid interply porosities. The through the thickness behaviour of the composite during forming and consolidation is analysed by a shell finite element with pinching degrees of freedom. This element avoids a locking due to pinching by a modification of the constitutive relation.

Mots clés: thermoplastic composites; re-consolidation; shell finite elements

Domaines: Mécanique [physics.med-ph]

Damien Soulat, Anthony Cheruet, Philippe Boisse, Serge Maison-Le Poëc, S. Guinard. Experimental and numerical analysis of interply porosities in composites thermoforming. Sixth International ESAFORM conference on Material Forming 2003, Apr 2003, Salerno, Italy. pp.903-906. ⟨hal-00020578⟩