Influence of Microstructure Randomness on the Shear Behaviour and Compressive Strength of Continuous Carbon Fibre Composites

IF 2.3 4区材料科学 Q3 MATERIALS SCIENCE, COMPOSITES

Applied Composite Materials Pub Date : 2024-05-06 DOI:10.1007/s10443-024-10230-3

Pierre-Yves Méchin, Anastasia Borras, Vincent Keryvin

引用次数: 0

Abstract

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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微观结构随机性对连续碳纤维复合材料剪切行为和压缩强度的影响

轴向抗压强度是 CFRP 结构的关键设计参数。其限制因素之一是单向层的非线性剪切行为。我们采用六角形单元格和不同的随机微结构（有平滑纤维分布和聚束纤维分布），通过计算均质化研究了如何从其组成成分的剪切行为中估算出这一行为。无集束的随机微结构对剪切模量的预测最为接近。然而，模型剪切响应在较高载荷下趋于一致，因此六边形模型足以估算非线性剪切行为，进而准确估算出测量的抗压强度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Composite Materials 工程技术-材料科学：复合

CiteScore

4.20

自引率

4.30%

发文量

审稿时长

1.6 months

期刊介绍： Applied Composite Materials is an international journal dedicated to the publication of original full-length papers, review articles and short communications of the highest quality that advance the development and application of engineering composite materials. Its articles identify problems that limit the performance and reliability of the composite material and composite part; and propose solutions that lead to innovation in design and the successful exploitation and commercialization of composite materials across the widest spectrum of engineering uses. The main focus is on the quantitative descriptions of material systems and processing routes. Coverage includes management of time-dependent changes in microscopic and macroscopic structure and its exploitation from the material''s conception through to its eventual obsolescence.