Design methodology of piezoelectric energy-harvesting skin using topology optimization

A. Takezawa*, M. Kitamura, S. L. Vatanabe, E. C.N. Silva


研究成果: Article査読

35 被引用数 (Scopus)


This paper describes a design methodology for piezoelectric energy harvesters that thinly encapsulate the mechanical devices and exploit resonances from higher-order vibrational modes. The direction of polarization determines the sign of the piezoelectric tensor to avoid cancellations of electric fields from opposite polarizations in the same circuit. The resultant modified equations of state are solved by finite element method (FEM). Combining this method with the solid isotropic material with penalization (SIMP) method for piezoelectric material, we have developed an optimization methodology that optimizes the piezoelectric material layout and polarization direction. Updating the density function of the SIMP method is performed based on sensitivity analysis, the sequential linear programming on the early stage of the optimization, and the phase field method on the latter stage of the optimization to obtain clear optimal shapes without intermediate density. Numerical examples are provided that illustrate the validity and utility of the proposed method.

ジャーナルStructural and Multidisciplinary Optimization
出版ステータスPublished - 2014 2月

ASJC Scopus subject areas

  • ソフトウェア
  • 制御と最適化
  • 制御およびシステム工学
  • コンピュータ サイエンスの応用
  • コンピュータ グラフィックスおよびコンピュータ支援設計


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