高性能平纹织物纱线抽出力学行为及其移动机制

doi:10.16183/j.cnki.jsjtu.2020.419

摘要/Abstract

摘要：

为探究平纹织物纱线移动响应机制,以典型平纹机织织物为对象,进行多加载工况下纱线移动行为的数值模拟,系统考察摩擦因数、模型尺寸及预应力对纱线移动响应的影响规律,进而深入探讨了抽出纱线断裂长度、抽断强度、纱线间摩擦性能及基布所受预应力间的耦合关系.结果表明:该平纹机织织物峰值抽出载荷与摩擦因数、模型尺寸及预应力呈正相关,预应力由200 MPa增至700 MPa,峰值抽出载荷提升34.49%.纱线屈曲明显时,其抽出荷载提升明显.该机织织物纱线抽断强度随预应力及摩擦因数的增加逐渐增大,摩擦因数从0.1增至0.2时,纱线抽断强度增幅达16.48%.该机织织物纱线的抽断长度与实际所处应力环境相关,应力均匀化是纱线抽断长度增加的重要因素.

关键词: 平纹织物, 纱线抽出, 移动, 断裂, 摩擦因数

Abstract:

In order to study the movement mechanisms of plain weave fabric yarns, the numerical simulation of behavior of yarn pull-out and movement under various loading conditions was carried out on a typical plain-woven fabric. The effects of friction coefficients, model size, and pre-stress levels on yarn movement responses were analyzed in detail, and the coupling relation among pull-out length, pull-out fractured strength, and model parameter conditions, including friction coefficients and pre-stress levels were shown. The results indicate that positive correlations exist between peak pull-out loads and those main model parameters of plain weave fabrics, including the friction coefficients, model size, and pre-stress levels. As the pre-stress level rises from 200 MPa to 700 MPa, the peak pull-out load increases by 34.49%, and the existence of yarn crimps could lead to improvement of the pull-out loads. The pull-out fractured strength of yarns gradually increases with the growths of pre-stress levels and friction coefficients in the plain weave fabrics. Specifically, the pull-out fractured strength of yarns increases by 16.48% as the friction coefficient grow from 0.1 to 0.2. In addition, the pull-out fractured length of yarns of the plain-woven fabrics is highly dependent on the actual stress state, and the homogenization of the stress state is an important factor that influences the pull-out fractured length.

Key words: plain weave fabrics, yarn pull-out, movement, breakage, friction coefficient

中图分类号:

TU502

陈建稳, 吴善祥, 张若男, 陈务军, 范进, 王明洋. 高性能平纹织物纱线抽出力学行为及其移动机制[J]. 上海交通大学学报, 2022, 56(4): 464-473.

CHEN Jianwen, WU Shanxiang, ZHANG Ruonan, CHEN Wujun, FAN Jin, WANG Mingyang. Behavior of Pull-Out and Movement Mechanisms of High-Performance Plain Weave Fabric Yarns[J]. Journal of Shanghai Jiao Tong University, 2022, 56(4): 464-473.

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方向	椭圆截面/mm		路径参数/mm
方向	长半轴	短半轴	周期	幅值
经纱	0.655	0.155	2.997	0.122
纬纱	0.585	0.139	2.982	0.096

工况	F/MPa	Z/mm	u
I	0	15	0、 0.1、 0.2
II	200、300、400、 500、600、700	15	0.2
III	40、60、80、 100、120	15	0、 0.1、0.2