Interactions modèles expériences sur des âmes nids d'abeilles Nomex®. Application au design d'un voilier multicoque de course océanique

Gornet, Laurent; Marckmann, Gilles; Ollier, G.

doi:10.3166/rcma.16.167-190

Cited by 2 publications

(3 citation statements)

References 5 publications

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“…Other outlooks for this study deal with the modelling of the Nomex honeycomb core which connects the two composite skins in the panels used in nautical construction. First developments have been made in [2] concerning the linear elastic behavior until rupture of these structural materials. Further ones, dealing with the rate effects, will come next.…”

Section: Resultsmentioning

confidence: 99%

“…Their linear orthotropic elastic behavior is now well known as can be seen in [1]. The use of homogenization procedures to find the equivalent mechanical properties of stacking sequences of these materials has allowed the development of huge numerical models dedicated to the design of the sailing ships [2]. However, in a context of competition, the knowledge of the elastic properties of the constitutive material is not enough for an optimized design of the structures.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Rate Dependent Constitutive Model for Carbon-Fiber Reinforced Plastic Woven Fabrics

Marguet

Rozycki

Gornet

2007

Mechanics of Advanced Materials and Structures

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International audienceThis paper deals with the modelling until rupture of composite structures made of glass-fibre / epoxy-resin woven fabrics submitted to dynamic loadings. The model is built at the mesoscale of the elementary ply. It takes into account the slightly nonlinear brittle behaviour of the fibres under tensile sollicitations, their nonlinear behaviour in compression as well as the strongly non linear and irreversible behaviour of the ply in shear. Strain rate effects are also introduced and special attention is paid to the objectivity of the model in the context of finite element calculation. Therefore the choice of a delayed damage mesomodel coupled with viscoplasticity is made. In order to identify the values of the parameters of the model, an optimization procedure based on a gradient-free direct search method has been developed. As a logical proceeding to this study, the model ability to avoid strain localization and mesh dependence is then checked on simple uniaxial examples. The last part of this paper is devoted to structural calculation. The results of the simulations of both the impact on composite plate and the crushing of thin-walled tube demonstrate the capability of the model to reproduce observed physical phenomena

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Rate Dependent Constitutive Model for Carbon-Fiber Reinforced Plastic Woven Fabrics

Marguet

Rozycki

Gornet

2007

Mechanics of Advanced Materials and Structures

View full text Add to dashboard Cite

show abstract

“…Then, the micro-cracks coalesce and initiate delaminations and large scale crack propagation. Interfaces between core and laminates debond or core crushing lead the sandwich to failure [1]. In the context of finite element model, taking into account all these phenomena while keeping an admissible computational cost is not a simple matter.…”

Section: Introductionmentioning

confidence: 99%