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ID 38753
本文ファイル
著者
Vatanabe, S. L.
Silva, E. C. N.
NDC
機械工学
抄録(英)
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.
掲載誌名
Structural and Multidisciplinary Optimization
49巻
2号
開始ページ
281
終了ページ
297
出版年月日
2014-02
出版者
Springer Berlin Heidelberg
ISSN
1615-147X
1615-1488
NCID
出版者DOI
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
author
権利情報
Copyright (c) Springer-Verlag Berlin Heidelberg 2013
関連情報
The final publication is available at Springer via http://dx.doi.org/10.1007/s00158-013-0974-x.
関連情報URL
部局名
工学研究科