| 基于光热膨胀效应的光驱自激单摆 |
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| 引用本文： | 葛大丽. 基于光热膨胀效应的光驱自激单摆[J]. 安徽建筑大学学报, 2021, 29(3): 52-58. DOI: 10.11921/j.issn.2095-8382.20210308 |
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| 作者姓名： | 葛大丽 |
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| 作者单位： | 安徽建筑大学 土木工程学院,安徽 合肥 230601 |
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| 基金项目： | 安徽高校自然科学研究项目重点项目（KJ2020A0449） |
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| 摘 要： | 自激振荡可利用运动状态反馈等机制实现自主吸收环境能量,开发新型自激振荡系统可推动自适应主动机器的进一步发展.基于光热膨胀材料提出一种单摆结构,通过建立光热响应摆动力学模型,从理论上研究了单摆的光驱自激振荡现象.结果表明,单摆有静态模式和振荡模式两种运动模式.在阐明了自激振荡机理及其触发条件后,进一步全面探讨了系统参数对振动幅值和频率的影响.
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| 关 键 词： | 光热膨胀 自激振动 光热驱动 单摆 |
| 收稿时间： | 2021-02-03 |
| 修稿时间： | 2021-03-25 |
Optical Drive Self-excited Simple Pendulum Based on Photothermal Expansion Effect |
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| GE Dali. Optical Drive Self-excited Simple Pendulum Based on Photothermal Expansion Effect[J]. Journal of Anhui Jianzhu University, 2021, 29(3): 52-58. DOI: 10.11921/j.issn.2095-8382.20210308 |
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| Authors: | GE Dali |
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| Affiliation: | Anhui Jianzhu University,School of Civil Engineering,Anhui Province,Hefei,230601 |
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| Abstract: | The self-excited oscillation can absorb environmental energy autonomously by the motion state feedback mechanism, and the development of a new self-excited oscillation system can promote the further development of adaptive active machines. Based on the photothermal expansion material, a simple pendulum structure is proposed. By establishing the dynamic model of the photothermal response pendulum, the self-excited oscillation phenomenon of the simple pendulum is theoretically studied.The results show that the pendulum has two modes: static mode and oscillatory mode. After clarifying the mechanism of self-excited oscillation and its triggering conditions, the influence of system parameters on the amplitude and frequency of vibration is further discussed comprehensively. |
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| Keywords: | Photothermal expansion Self-excited vibration Photothermal drive Simple pendulum. |
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