柔性电致伸缩聚合物薄膜结构的稳定性分析
发布时间：2018-10-17 10:36
【摘要】：研究了外加电场作用下柔性电致伸缩聚合物薄膜的整体收缩、表面局部屈曲与整体失稳3种变形模式.在外加电场作用下,静电力(即Maxwell应力)成为薄膜变形的主要驱动力.通过力平衡和小扰度摄动法,获得电致伸缩聚合物薄膜发生表面局部屈曲和整体失稳变形模式的转换条件;通过数值算例对这2种变形模式与电场强度、薄膜尺寸、泊松比、介电常数和电致伸缩系数等之间的相关性进行讨论.分析结果显示,通过调节外加电场强度和材料参数,能够调控电致伸缩聚合物薄膜的变形模式.
[Abstract]:The three deformation modes of flexible electrostrictive polymer films, such as global shrinkage, local buckling and global instability, have been studied under the action of an applied electric field. Under the action of external electric field, electrostatic force (Maxwell stress) is the main driving force of film deformation. By means of force balance and small perturbation method, the conversion conditions of local buckling and global instability deformation modes of electrostrictive polymer films are obtained, and the electric field strength, film size, Poisson's ratio are calculated by numerical examples. The correlation between dielectric constant and electrostrictive coefficient is discussed. The results show that the deformation mode of electrostrictive polymer films can be regulated by adjusting the applied electric field strength and material parameters.
【作者单位】： 集美大学诚毅学院;厦门大学材料学院福建省特种先进材料重点实验室;
【基金】：国家自然科学基金(11572271,11472233)
【分类号】：TB383.2
本文编号：2276386
[Abstract]:The three deformation modes of flexible electrostrictive polymer films, such as global shrinkage, local buckling and global instability, have been studied under the action of an applied electric field. Under the action of external electric field, electrostatic force (Maxwell stress) is the main driving force of film deformation. By means of force balance and small perturbation method, the conversion conditions of local buckling and global instability deformation modes of electrostrictive polymer films are obtained, and the electric field strength, film size, Poisson's ratio are calculated by numerical examples. The correlation between dielectric constant and electrostrictive coefficient is discussed. The results show that the deformation mode of electrostrictive polymer films can be regulated by adjusting the applied electric field strength and material parameters.
【作者单位】： 集美大学诚毅学院;厦门大学材料学院福建省特种先进材料重点实验室;
【基金】：国家自然科学基金(11572271,11472233)
【分类号】：TB383.2
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