形状记忆合金针织物致动器的收缩力及针脚建模

Q4 Materials Science
Akichika Nakashima, Yusuke Higuchi, Yohei Sato, Lina Wakako, T. Kinari
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引用次数: 0

摘要

为了提高先前研究中开发的形状记忆合金(SMA)针织物致动器收缩力的计算精度,我们测量了SMA纱线在未加热(20°C)和加热(100°C)环境下的杨氏模量E和线径d。然后,利用E和d的测量值,用弯曲刚度(EI)来计算加热环境中的收缩力。与只考虑SMA纱线收缩的理论收缩力相比,考虑EI收缩和增量的理论收缩力的精度得到了提高。此外,为了提高计算精度,我们提出了SMA平纹针织物的二维线迹模型。这个模型由四个接触点组成的仿线曲线组成,每个纱线穿过其他针迹并产生作用力。此外,该模型还可以显示纱线收缩时曲率的变化以及势能的增加。因此,证实了该模型对SMA针织物收缩力的计算是有用的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Contractile Force and Stitch Modeling of Shape Memory Alloy Knitted Fabric Actuators
To improve the calculation accuracy of the contractile force in a shape memory alloy (SMA) knitted fabric actuator, which was developed in a previous study, we measured the Young's modulus, E , and wire diameter, d , of a SMA yarn in unheated (20 °C) and heated (100 °C) environments. Subsequently, the contractile force in the heated environment was calculated in terms of bending rigidity ( EI ) using the measured values of E and d . The accuracy of the theoretical contractile force, considering contraction and increment in EI , was improved when compared with that in the former one, which only considered contraction of the SMA yarn. Furthermore, to enhance calculation accuracy, we proposed a 2 dimensional stitch model for SMA plain knitted fabric. This model consisted of clothoid curves through four contact points, where each yarn crosses the other stitches and act forces. Further, this model could show the change in the curvature via the contraction of the yarn as well as the increase in its potential energy. Therefore, it was confirmed that this model is useful for calculating the contractile force of the SMA knitted fabric.
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来源期刊
Journal of Textile Engineering
Journal of Textile Engineering Materials Science-Materials Science (all)
CiteScore
0.70
自引率
0.00%
发文量
4
期刊介绍: Journal of Textile Engineering (JTE) is a peer-reviewed, bimonthly journal in English and Japanese that includes articles related to science and technology in the textile and textile machinery fields. It publishes research works with originality in textile fields and receives high reputation for contributing to the advancement of textile science and also to the innovation of textile technology.
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