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Influence of fibre arrangement on the shear behaviour of continuous carbon fibre composites and consequences on the estimation of their axial compressive strength

Research Square (Research Square) 2024 Score: 35 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.
Pierre-Yves Méchin, Pierre-Yves Méchin, Anastasia Borras, Anastasia Borras, Vincent Kéryvin

Summary

Researchers investigated how fibre arrangement in continuous carbon fibre-reinforced polymer (CFRP) composites affects nonlinear shear behaviour, using computational homogenisation with hexagonal unit cells and random microstructures with smooth or clustered fibre distributions. They found that a random microstructure without clustering best predicted shear modulus, though all models converged at higher loadings, supporting the use of hexagonal models for estimating axial compressive strength.

<title>Abstract</title> Axial compressive strength is a key design parameter for CFRP structures.One of its limiting factors is the non-linear shear behaviour of the unidirectional ply.We investigate the estimation of this behaviour from those of its constituents by computational homogenisation with an hexagonal unit cell and different random microstructures with smooth and clustered fibre distributions.A random microstructure without clusterings predicts the shear modulus most closely.However, the modelled shear responses converge at higher loadings so that an hexagonal model is sufficient to estimate the non-linear shear behaviour and in turn give accurate estimations of measured compressive strength

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