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A Modeling of Twisted and Coiled Polymer Artificial Muscles Based on Elastic Rod Theory

Institute of Biomedical Manufacturing and Life Quality Engineering, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
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Actuators 2020, 9(2), 25; https://doi.org/10.3390/act9020025
Received: 3 March 2020 / Revised: 29 March 2020 / Accepted: 2 April 2020 / Published: 7 April 2020
(This article belongs to the Special Issue Polymeric Actuators 2020)
Twisted and coiled polymer (TCP) can generate large stroke and output high power density, making it a promising artificial muscle. Thermally induced muscles fabricated from nylon or other polymer fibers can be used in robotic, biomedical devices, and energy-harvesting equipment. While fibers with different shapes and materials have different optimal process parameters. Understanding mechanisms of TCP forming and the impact of process parameters is critical to explore stronger, more powerful artificial muscles. In this paper, an elastic-rod-theory-based model was established for capturing the quantitative relationship between tensile actuation and fabrication load. Further experimental results agree with model calculation and TCP muscles used in our research reaches maximum stroke of 52.6%, strain up to 9.8 MPa, and power density of 211.89 J/kg. View Full-Text
Keywords: artificial muscle; soft actuator; nylon; fiber; strain; elastic rod theory; fabrication load artificial muscle; soft actuator; nylon; fiber; strain; elastic rod theory; fabrication load
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MDPI and ACS Style

Wu, C.; Zheng, W. A Modeling of Twisted and Coiled Polymer Artificial Muscles Based on Elastic Rod Theory. Actuators 2020, 9, 25.

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