Self-Vibration of Liquid Crystal Elastomer Strings under Steady Illumination
Self-vibrating systems based on active materials have been widely developed, but most of the existing self-oscillating systems are complex and difficult to control. To fulfill the requirements of different functions and applications, it is necessary to construct more self-vibrating systems that are...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-08-01
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| Series: | Polymers |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4360/15/16/3483 |
| _version_ | 1797583326931845120 |
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| author | Haiyang Wu Yuntong Dai Kai Li |
| author_facet | Haiyang Wu Yuntong Dai Kai Li |
| author_sort | Haiyang Wu |
| collection | DOAJ |
| description | Self-vibrating systems based on active materials have been widely developed, but most of the existing self-oscillating systems are complex and difficult to control. To fulfill the requirements of different functions and applications, it is necessary to construct more self-vibrating systems that are easy to control, simple in material preparation and fast in response. This paper proposes a liquid crystal elastomer (LCE) string–mass structure capable of continuous vibration under steady illumination. Based on the linear elastic model and the dynamic LCE model, the dynamic governing equations of the LCE string–mass system are established. Through numerical calculation, two regimes of the LCE string–mass system, namely the static regime and the self-vibration regime, are obtained. In addition, the light intensity, contraction coefficient and elastic coefficient of the LCE can increase the amplitude and frequency of the self-vibration, while the damping coefficient suppresses the self-oscillation. The LCE string–-mass system proposed in this paper has the advantages of simple structure, easy control and customizable size, which has a wide application prospect in the fields of energy harvesting, autonomous robots, bionic instruments and medical equipment. |
| first_indexed | 2024-03-10T23:37:19Z |
| format | Article |
| id | doaj.art-26192f6923ec4a4fbdde59dfd66fa61b |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-10T23:37:19Z |
| publishDate | 2023-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-26192f6923ec4a4fbdde59dfd66fa61b2023-11-19T02:45:04ZengMDPI AGPolymers2073-43602023-08-011516348310.3390/polym15163483Self-Vibration of Liquid Crystal Elastomer Strings under Steady IlluminationHaiyang Wu0Yuntong Dai1Kai Li2School of Civil Engineering, Anhui Jianzhu University, Hefei 230601, ChinaSchool of Civil Engineering, Anhui Jianzhu University, Hefei 230601, ChinaSchool of Civil Engineering, Anhui Jianzhu University, Hefei 230601, ChinaSelf-vibrating systems based on active materials have been widely developed, but most of the existing self-oscillating systems are complex and difficult to control. To fulfill the requirements of different functions and applications, it is necessary to construct more self-vibrating systems that are easy to control, simple in material preparation and fast in response. This paper proposes a liquid crystal elastomer (LCE) string–mass structure capable of continuous vibration under steady illumination. Based on the linear elastic model and the dynamic LCE model, the dynamic governing equations of the LCE string–mass system are established. Through numerical calculation, two regimes of the LCE string–mass system, namely the static regime and the self-vibration regime, are obtained. In addition, the light intensity, contraction coefficient and elastic coefficient of the LCE can increase the amplitude and frequency of the self-vibration, while the damping coefficient suppresses the self-oscillation. The LCE string–-mass system proposed in this paper has the advantages of simple structure, easy control and customizable size, which has a wide application prospect in the fields of energy harvesting, autonomous robots, bionic instruments and medical equipment.https://www.mdpi.com/2073-4360/15/16/3483self-vibrationliquid crystal elastomerlight-drivenstring |
| spellingShingle | Haiyang Wu Yuntong Dai Kai Li Self-Vibration of Liquid Crystal Elastomer Strings under Steady Illumination Polymers self-vibration liquid crystal elastomer light-driven string |
| title | Self-Vibration of Liquid Crystal Elastomer Strings under Steady Illumination |
| title_full | Self-Vibration of Liquid Crystal Elastomer Strings under Steady Illumination |
| title_fullStr | Self-Vibration of Liquid Crystal Elastomer Strings under Steady Illumination |
| title_full_unstemmed | Self-Vibration of Liquid Crystal Elastomer Strings under Steady Illumination |
| title_short | Self-Vibration of Liquid Crystal Elastomer Strings under Steady Illumination |
| title_sort | self vibration of liquid crystal elastomer strings under steady illumination |
| topic | self-vibration liquid crystal elastomer light-driven string |
| url | https://www.mdpi.com/2073-4360/15/16/3483 |
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