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一种新型介电弹性体仿生可调焦透镜的变焦分析

史惠琦 王惠明

史惠琦, 王惠明. 一种新型介电弹性体仿生可调焦透镜的变焦分析[J]. 力学学报, 2020, 52(6): 1719-1729. doi: 10.6052/0459-1879-20-212
引用本文: 史惠琦, 王惠明. 一种新型介电弹性体仿生可调焦透镜的变焦分析[J]. 力学学报, 2020, 52(6): 1719-1729. doi: 10.6052/0459-1879-20-212
Shi Huiqi, Wang Huiming. THEORETICAL NONLINEAR ANALYSIS OF A BIOMIMETIC TUNABLE LENS DRIVEN BY DIELECTRIC ELASTOMER[J]. Chinese Journal of Theoretical and Applied Mechanics, 2020, 52(6): 1719-1729. doi: 10.6052/0459-1879-20-212
Citation: Shi Huiqi, Wang Huiming. THEORETICAL NONLINEAR ANALYSIS OF A BIOMIMETIC TUNABLE LENS DRIVEN BY DIELECTRIC ELASTOMER[J]. Chinese Journal of Theoretical and Applied Mechanics, 2020, 52(6): 1719-1729. doi: 10.6052/0459-1879-20-212

一种新型介电弹性体仿生可调焦透镜的变焦分析

doi: 10.6052/0459-1879-20-212
基金项目: 1) 国家自然科学基金资助项目(11772296)
详细信息
    作者简介:

    2) 王惠明,教授,主要研究方向:多场耦合力学, 智能软材料非线性力学. E-mail: wanghuiming@zju.edu.cn

    通讯作者:

    王惠明

  • 中图分类号: O343.5

THEORETICAL NONLINEAR ANALYSIS OF A BIOMIMETIC TUNABLE LENS DRIVEN BY DIELECTRIC ELASTOMER

  • 摘要: 介电弹性体 (dielectric elastomer) 是电活性聚合物智能材料的一种,在外加电场作用下,可产生多种形式的响应.在驱动柔性透镜的变焦方面,相对于传统的机械操控变焦方法 显示出独特的优势.针对一款在电压激励下可高效调节焦距的介电弹性体仿人眼变焦透镜,该透镜由上下两层介电弹性薄膜和固定框架构成,并在封闭腔内充入盐水,上层薄膜涂覆环形柔性电极.在电压激励下,上层膜发生变形,由于盐水的体积保持恒定,引 起下层膜随之变形,使得透镜的焦距发生改变.采用 neo-Hookean 模型,利用变分原理导出了该透镜的控制方程、边界条件和连 续条件.利用打靶法求解了该非线性问题并高效地处理了非线性问题的界面连续条件. 理论分析结果与实验结果相吻合. 利用此模型开展了广泛的参数分析,研究表明,透镜的几何形状、初始焦距、介电弹性体薄膜的预拉伸率、涂覆的电极面积、材料的剪切模量等对透镜焦距的调节性能都有重要的影响.所建立的理论分析模型可为柔性仿生透镜的设计和参数优化提供有效的分析方法.

     

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出版历程
  • 收稿日期:  2020-06-18
  • 刊出日期:  2020-12-10

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