Abstract

Polyester monofilaments are widely used in the manufacture of 3D textiles. Due to their buckling state during the fabric compression process, polyester fibres provide such fabrics with a number of interesting properties. The aim of this study is to enhance the understanding of the buckling behaviour of polyester monofilaments. The article focuses on the influence of the material heterogeneity of polyester fibres on this phenomenon. Experimental, analytical and numerical approaches are combined so as to determine how the critical buckling load evolves due to such heterogeneity. The results showed that it is reasonable to consider such monofilaments as homogeneous during the study of the critical buckling load thereof. The numerical study determined that the material heterogeneity of the fibre can be disregarded without unduly influencing the critical buckling load. Moreover, a comparison of the various results appeared to demonstrate the significant impact of the anisotropy of the fibre on the results.

摘要

聚酯单丝被广泛用于3D纺织品的制造中。由于它们在织物压缩过程中的屈曲状态，聚酯纤维为这种织物提供了许多令人感兴趣的性能。这项研究的目的是增强对聚酯单丝屈曲行为的理解。本文重点讨论了聚酯纤维材料异质性对这种现象的影响。实验，分析和数值方法相结合，以确定由于这种异质性，临界屈曲载荷如何演变。结果表明，在研究其临界屈曲载荷时，将这样的单丝视为均质是合理的。数值研究表明，在不过度影响临界屈曲载荷的情况下，可以忽略纤维的材料异质性。而且，各种结果的比较似乎表明了纤维各向异性对结果的重大影响。