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Accounting for local morphological fluctuations in the prediction of the transverse elastic behaviour of UD composites

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Résumé

While unidirectional (UD) materials are used for their excellent stiffness and strength in the fibre direction, they suffer from poor transverse properties. In the case of complex loadings, the first damage often appears in the transverse directions. While obtaining longitudinal properties is not a problem, transverse properties are still very difficult to measure reliably experimentally and the use of predictive models is often necessary. The main difficulty lies in taking into account the local morphological fluctuations which greatly influence the transverse behaviour. Using a recently developed model based on a Generalized Self-Consistent Scheme (GSCS) coupled with a Morphologically Representative Pattern (MRP), we propose to use the analytical solutions obtained to predict the effective transverse properties of different microstructural configurations. In a two-phase context, the robustness of the model is verified for phase contrasts up to 10^5, reinforcement volume fractions up to 70% or an incompressible matrix, which defeats many analytical models.
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Dates et versions

hal-03747790 , version 1 (08-08-2022)

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  • HAL Id : hal-03747790 , version 1

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Sébastien Joannès, Jennifer Blondel, Eveline Hervé-Luanco. Accounting for local morphological fluctuations in the prediction of the transverse elastic behaviour of UD composites. ECCM 20 - 20th European Conference on Composite Materials, Jun 2022, Lausanne, Switzerland. ⟨hal-03747790⟩
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