Photostrictive actuators for photonic control of shallow spherical shells
Photostrictive actuators for photonic control of shallow spherical shells
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DOI：
10.1088/0964-1726/16/5/025
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发表时间：
2007-10
影响因子：
4.1
通讯作者：
H. Shih;H. Tzou
中科院分区：
文献类型：
--
作者：
H. Shih;H. Tzou
光致伸缩材料，表现出光致应变，是感兴趣的未来一代的无线遥控光致动器。光致伸缩驱动器有望成为光控柔性结构的驱动元件。本文研究了利用离散光致伸缩作动器实现柔性球壳的光子控制。本文提出了一个耦合的光-压电热弹性壳理论，该理论结合了光伏，热释电和压电效应，并有能力预测由光致伸缩致动器驱动的球壳的响应。在这项研究中，致动器的位置以及膜和弯曲组件上的控制动作的影响进行了分析。结果表明，控制力是模式和位置相关的。分析还表明，膜的控制作用比弯曲控制作用更重要。
Photostrictive materials, exhibiting light-induced strain, are of interest for the future generation of wireless remote control photo-actuators. Photostrictive actuators are expected to be used as the driving component in optically controlled flexible structures. In this paper, the photonic control of flexible spherical shells using discrete photostrictive actuators is investigated. This paper presents a coupled opto-piezothermoelastic shell theory that incorporates photovoltaic, pyroelectric and piezoelectric effects, and has the capability to predict the response of a spherical shell driven by the photostrictive actuators. In this study, the effects of actuator location as well as membrane and bending components on the control action have been analyzed. The results obtained indicate that the control forces are mode and location dependent. Analysis also shows that the membrane control action is much more significant than the bending control action.