Modelling aeronautical composite laminates behaviour under impact using a saturation damage and delamination continuous material model

Muhammad Ilyas (1) , Christine Espinosa (1) , Frederic Lachaud (1) , Laurent Michel (1) , Michel Salaün (1)

1 ICA - Institut Clément Ader

We show that the behavior of T700/M21s and T800/M21s composite panels are affected by the influence of strain rates together with local shear and crush punch or global flexural strengths of the structure. A deterministic continuous composite material model has been developed as a LS-DYNA user defined material model for unidirectional composites on the basis of the Matzenmiller model widely used for woven composites. Initiation and evolution up to saturation and fracture are implemented for various and coupled damage mechanisms including delamination. Quasi-static and dynamic characterization tests laminates have been carried out on balanced angle ply [±θ] and used for calibration of numerical values. Impact induced damage from experiment's measures and numerical predictions are compared for T800/M21S aeronautical samples impacted at 15J.

Mots clés: Strain rate behavior; Damage mechanics; Unidirectional composite; Computational mechanics; Numerical simulations; Impact

Domaines: Mécanique des matériaux [physics.class-ph]; Matériaux et structures en mécanique [physics.class-ph]

Muhammad Ilyas, Christine Espinosa, Frederic Lachaud, Laurent Michel, Michel Salaün. Modelling aeronautical composite laminates behaviour under impact using a saturation damage and delamination continuous material model. 9th International Conference on Fracture and Damage Mechanics, Sep 2010, Nagasaki, Japan. pp.369-372, ⟨10.4028/www.scientific.net/KEM.452-453.369⟩. ⟨hal-01852306⟩