使用宏观构成模型模拟基于罗纹结构生产的双轴针织物的拉伸行为

IF 3.1 Q2 MATERIALS SCIENCE, COMPOSITES
Mohammad Javad Abghary, Reza Jafari Nedoushan, Hossein Hasani, Woong-Ryeol Yu
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引用次数: 0

摘要

本研究提出了一个宏观尺度的构成模型,用于模拟基于 1 × 1 罗纹结构生产的双轴纬编织物的拉伸行为。织物是在现代横机中使用涤纶纱作为缝合纱、尼龙纱作为直股纱生产的。在拉力试验机上测量了 1 × 1 罗纹结构和相应的双轴针织物在三个不同方向(横向、纵向和 45 度)的应力-应变曲线。根据提取的结果,提出了双轴针织物宏观建模的构成方程。双轴针织物的刚度矩阵被假定为 1 × 1 罗纹和加强纱刚度矩阵的组合。提供了一个 UMAT 子程序,用于在 Abaqus 软件中实现构成行为。为了评估所建模型的准确性,模拟了织物在 22.5° 和 67.5° 方向上的拉伸行为,并与实验结果进行了比较。结果表明,宏观模型可以成功预测双轴纬编织物在不同方向上的拉伸行为。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Simulation of the tensile behaviour of biaxial knitted fabrics produced based on rib structure using a macro constitutive model
This study presents a macro-scale constitutive model to simulate the tensile behaviour of biaxial weft knitted fabrics produced based on a 1 × 1 rib structure. Fabrics were produced using polyester yarns as stitch yarns and nylon yarns as straight yarns in a modern flat knitting machine. Stress–strain curves of 1 × 1 rib structure and corresponding biaxial knitted fabric were measured in three different directions (course, wale and 45 degrees) on a tensile tester. Based on extracted results, a constitutive equation was proposed for macro modelling of biaxial knitted fabrics. The stiffness matrix of the biaxial knitted fabrics was assumed to be a combination of the stiffness matrix of 1 × 1 rib and reinforcement yarns. A UMAT subroutine was provided to implement the constitutive behaviour in Abaqus software. To evaluate the accuracy of the proposed model, fabric tensile behaviour in 22.5° and 67.5° directions were simulated and compared with experimental results. The results showed that the macro model can successfully predict the tensile behaviour of the biaxial weft knitted fabric in different directions.
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来源期刊
Functional Composites and Structures
Functional Composites and Structures Materials Science-Materials Science (miscellaneous)
CiteScore
4.80
自引率
10.70%
发文量
33
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