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首页> 外文期刊>The Journal of the Textile Institute >The influence of two bar warp-knitted structure on the fabric tensile stress relaxation Part II: (locknit, satin, loop raised)
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The influence of two bar warp-knitted structure on the fabric tensile stress relaxation Part II: (locknit, satin, loop raised)

机译：两根经编结构对织物拉伸应力松弛的影响第二部分：（针织，缎纹，毛圈起皱）

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摘要

When strain is applied constantly, there is a decreased stress with time in viscoelastic materials, which is called stress relaxation. During the manufacture and application of clothing and footwear, materials experience various long-lasting deformations, and relaxation process in materials arises. Thus, with theoretical and experimental study of the factors affecting stress relaxation, the ability to design and produce appropriate clothes will be increased. In the first part of this research, we studied the stress relaxation behavior of warp-knitted structures which have longer underlaps in back bar (reverse locknit, three- and four-needle sharkskin, and queens' cord). Following the previous research, the aim of this study was to investigate the effect of fabric structure, strain percentage, and course density on the stress and stress relaxation of the warp-knitted structures which have longer underlaps in front bar (locknit, three- and four-needle satin, and loop raised). The results reveal that the fabric structure, strain value, and fabric density are important factors affecting the stress and stress relaxation percent of the fabrics. By increasing the strain and the length of underlap in the front guide bar, stress and stress relaxation percent will be increased. Also, fabrics with higher course density show higher stress and stress relaxation percent. Among the mechanical models used to describe the stress relaxation behavior of the fabrics, the three-component Maxwell's model with parallel-connect nonlinear spring showed the best agreement with the experimental stress relaxation curves of the analyzed fabrics.
机译：当不断施加应变时，粘弹性材料中的应力会随时间减少，这称为应力松弛。在服装和鞋类的制造和使用过程中，材料会经历各种持久变形，并且会出现材料松弛的过程。因此，通过对影响应力松弛的因素进行理论和实验研究，将提高设计和生产合适衣服的能力。在本研究的第一部分中，我们研究了后编织物中具有较长重叠部分的经编结构（反向锁织，三针和四针鲨鱼皮以及皇后带）的应力松弛行为。继先前的研究之后，本研究的目的是研究织物结构，应变百分比和横列密度对前排下重叠较长的经编结构的应力和应力松弛的影响（锁扣，三针和三针）。四针缎，并提出​​环）。结果表明，织物结构，应变值和织物密度是影响织物应力和应力松弛百分比的重要因素。通过增加前导杆中的应变和重叠长度，应力和应力松弛百分比将增加。同样，具有较高的进程密度的织物表现出较高的应力和应力松弛百分比。在用来描述织物应力松弛行为的力学模型中，带有并联非线性弹簧的三组分Maxwell模型与所分析织物的实验应力松弛曲线表现出最佳的一致性。

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