Contractile Force and Stitch Modeling of Shape Memory Alloy Knitted Fabric Actuators
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- NAKASHIMA Akichika
- Industrial Research Institute of Ishikawa
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- HIGUCHI Yusuke
- Kanazawa University
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- SATO Yohei
- Kanazawa University
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- WAKAKO Lina
- Kanazawa University
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- KINARI Toshiyasu
- Kanazawa University
Bibliographic Information
- Other Title
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- 形状記憶合金平編地アクチュエータの収縮力と編目モデリング
- ケイジョウ キオク ゴウキン ヒラアミジ アクチュエータ ノ シュウシュクリョク ト アミメ モデリング
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Abstract
<p>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.</p>
Journal
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- Journal of Textile Engineering
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Journal of Textile Engineering 67 (1), 13-19, 2021-02-15
The Textile Machinery Society of Japan
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Details 詳細情報について
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- CRID
- 1390569457941236864
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- NII Article ID
- 130008036927
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- NII Book ID
- AA11482543
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- ISSN
- 18801986
- 13468235
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- NDL BIB ID
- 031311804
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed