水合诱导蜘蛛拖丝超收缩和扭曲的现象学理论

IF 4.3 3区工程技术 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Extreme Mechanics Letters Pub Date : 2024-09-10 DOI:10.1016/j.eml.2024.102232

Lei Liu , Yaping Chen , Jian Lei , Dabiao Liu

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引用次数: 0

摘要

蜘蛛拖丝因其在高湿度条件下具有显著的超收缩和扭曲能力，是一种很有前景的人造肌肉制造材料。基于水合吸收方程和标准加固模型，我们建立了一个现象学理论来阐明水合诱导的蜘蛛拖丝超收缩和扭曲。该理论可以合理地预测蜘蛛拖网丝的软化、各向异性、水合超收缩和扭曲反应。理论预测与实验结果一致。这项研究为了解水合诱导蜘蛛拖丝变形的内在机理提供了宝贵的见解。

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A phenomenological theory for hydration-induced supercontraction and twist of spider dragline silk

Spider dragline silk is one promising material for producing artificial muscles, owing to its remarkable capacity for supercontraction and twist when exposed to high humidity. Based on the hydration absorption equation and the standard reinforcing model, we develop a phenomenological theory for elucidating the hydration-induced supercontraction and twist of spider dragline silk. The theory can reasonably predict the responses of softening, anisotropy, hydration-supercontraction, and twist of spider dragline silk. The theoretical predictions align with the experimental results. This study provides valuable insight into the underlying mechanisms of the hydration-induced deformation of spider dragline silk.

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来源期刊

Extreme Mechanics Letters Engineering-Mechanics of Materials

CiteScore

9.20

自引率

4.30%

发文量

179

审稿时长

45 days

期刊介绍： Extreme Mechanics Letters (EML) enables rapid communication of research that highlights the role of mechanics in multi-disciplinary areas across materials science, physics, chemistry, biology, medicine and engineering. Emphasis is on the impact, depth and originality of new concepts, methods and observations at the forefront of applied sciences.