Textile composite structural analysis taking into account the forming process

Abderrahmen Aridhi (1) , Makrem Arfaoui (2) , Tarek Mabrouki (2) , Naïm Naouar (1) , Yvan Denis (1) , Malek Zarroug (3) , Philippe Boisse (1)

1 LaMCoS - Laboratoire de Mécanique des Contacts et des Structures [Villeurbanne]
2 ENIT - Ecole Nationale d'Ingénieurs de Tunis
3 PSA Peugeot-Citroen

The manufacturing processes of composite materials modify the internal structure and therefore the mechanical properties of cured composite parts. In particular, draping of woven prepregs leads to angle changes between warp and weft yarns when the geometry of the part is double curved. We were propose to take the fiber reorientation caused by forming into account the structural analysis of a cured composite. For this purpose, the simulation for the forming of prepregs was based on a rate constitutive equation. Then, a simple orthotropic elastic model of the cured composite was developed to take into account the angle change created by the forming. An experimental validation of this approach was performed in the case of traction on a cured test specimen after a bias extension test. Structural analyses of 3D composite parts obtained by draping also showed that it was necessary to take into account the reorientation of the fibers.

Mots clés: Mechanical properties; Finite element analysis (FEA); Forming; Fiber reorientation

Domaines: Mécanique des matériaux [physics.class-ph]

Abderrahmen Aridhi, Makrem Arfaoui, Tarek Mabrouki, Naïm Naouar, Yvan Denis, et al.. Textile composite structural analysis taking into account the forming process. Composites Part B: Engineering, 2019, 166, pp.773-784. ⟨10.1016/j.compositesb.2019.02.047⟩. ⟨hal-02399005⟩