期刊
APPLIED COMPOSITE MATERIALS
卷 29, 期 1, 页码 109-119出版社
SPRINGER
DOI: 10.1007/s10443-021-09952-5
关键词
Auxetic; Woven fabrics; Helical auxetic yarns; Negative Poisson's ratio
This study investigates the Poisson's ratio of woven fabrics made of helical auxetic yarns, finding that optimal parameters include longer float length, lower wrapping angle, thinner diameter, and lower tensile modulus.
The paper presents a study on woven fabrics made of helical auxetic yarns (HAYs) and their key factors on Poisson's ratio under tension. The work aims to create and evaluate auxetic woven fabrics with optimal parameters for achieving better auxeticity including weave structure, wrapping angle of the auxetic yarn, thickness of the auxetic yarn and properties of the warp yarn. The maximum negative Poisson's ratio (NPR) of the woven fabric can be achieved as low as -2.92 for experiments. Then, a numerical study has been carried out as well to assist the development of auxetic woven fabrics. The findings of this paper showed longer float length, lower wrapping angle of the auxetic yarn, a thinner diameter of the auxetic yarn as well as lower tensile modulus of the warp yarn led to higher auxetic behaviour. This can also provide a reference for researchers to select the best parameters for producing the auxetic woven fabrics.
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