Design and testing for shape control of piezoelectric structures using topology optimization
Design and testing for shape control of piezoelectric structures using topology optimization
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DOI：
10.1016/j.engstruct.2015.04.006
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发表时间：
2015-08-15
影响因子：
5.5
通讯作者：
Tong, Liyong
中科院分区：
文献类型：
--
作者：
Luo, Quantian;Tong, Liyong
本文采用移动等值面阈值方法对变形压电结构的最佳拓扑设计进行了数值和实验研究。首先提出的是一种新颖的响应函数公式，适用于以组合相互应变能密度的形式最小化所需形状和实现形状之间的误差范数。然后开发了一种效率更高的设计更新算法，用于在迭代过程中搜索最佳等值面阈值。给出了在机械载荷、单通道电压以及机械载荷和电载荷组合作用下压电板形状变形的最佳拓扑材料分布的数值结果。对选定的最佳拓扑设计进行实验，以验证当前的响应函数和更新算法以及数值结果。 (C) 2015 Elsevier Ltd. 保留所有权利。
This paper presents a numerical and experimental investigation into optimum topological design of morphing piezoelectric structures using a moving iso-surface threshold method. Proposed first is a novel formulation of the response function suitable for minimizing the error norm between desired and achieved shapes in the form of combined mutual strain energy densities. A design updating algorithm with an enhanced efficiency is then developed in searching for the optimum iso-surface threshold during iterations. Numerical results are presented for optimum topological material distribution for shape morphing of piezoelectric plates subjected to mechanical loading, one channel electrical voltage and a combination of both mechanical and electrical loadings. Experiments for selected optimal topological designs are conducted to validate the present response function and updating algorithm as well as the numerical results. (C) 2015 Elsevier Ltd. All rights reserved.