Experimental and numerical damping behavior analyses of carbon/epoxy laminated plates including viscoelastic material

Rémy Mateu Pastor (1, 2) , Hervé Le Sourne (1, 2) , Patrice Cartraud (3, 2) , Eric Le Gal La Salle (4, 1)

1 ICAM - Institut Catholique d'Arts et Métiers
2 GeM - Institut de Recherche en Génie Civil et Mécanique
3 ECN - École Centrale de Nantes
4 LTeN - Laboratoire de Thermique et d’Energie de Nantes

The research work presented in this paper aimed to optimize the transmittance of a wind turbine carbon/epoxy plane support by including into the laminate one or several frequency-dependent interleaved viscoelastic layers. The objective of the present study was then to optimize the damping characteristics of the support upper-plate with viscoelastic layers while keeping an acceptable bending stiffness. The optimization consisted in creating holes in the viscoelastic layer in order to facilitate the resin through layer penetration during the co-curing manufacturing process. One part of the research consisted in optimizing both the size of the holes and their repartition in the viscoelastic layer. DSC and DMA tests allowed to characterize the stiffness and damping properties of the damped composite plates in a given frequency range and resulting mechanical properties were further used to set a finite element model with the objective to simulate the overall viscoelastic composite plate receptance.

Domaines: Mécanique [physics.med-ph]

Rémy Mateu Pastor, Hervé Le Sourne, Patrice Cartraud, Eric Le Gal La Salle. Experimental and numerical damping behavior analyses of carbon/epoxy laminated plates including viscoelastic material. Trends in the Analysis and Design of Marine Structures, 1, CRC Press, pp.376-384, 2019, ⟨10.1201/9780429298875-44⟩. ⟨hal-02372429⟩