Details
| Original language | English |
|---|---|
| Pages (from-to) | 316-335 |
| Number of pages | 20 |
| Journal | Journal of the Mechanics and Physics of Solids |
| Volume | 94 |
| Publication status | Published - 12 May 2016 |
Abstract
We present an extended finite element formulation for piezoelectric nanobeams and nanoplates that is coupled with topology optimization to study the energy harvesting potential of piezoelectric nanostructures. The finite element model for the nanoplates is based on the Kirchoff plate model, with a linear through the thickness distribution of electric potential. Based on the topology optimization, the largest enhancements in energy harvesting are found for closed circuit boundary conditions, though significant gains are also found for open circuit boundary conditions. Most interestingly, our results demonstrate the competition between surface elasticity, which reduces the energy conversion efficiency, and surface piezoelectricity, which enhances the energy conversion efficiency, in governing the energy harvesting potential of piezoelectric nanostructures.
Keywords
- Surface elasticity, Surface piezoelectricity, Topology optimization, ZnO nanostructures
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Condensed Matter Physics
- Engineering(all)
- Mechanics of Materials
- Engineering(all)
- Mechanical Engineering
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In: Journal of the Mechanics and Physics of Solids, Vol. 94, 12.05.2016, p. 316-335.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Topology optimization of piezoelectric nanostructures
AU - Nanthakumar, Srivilliputtur Subbiah
AU - Lahmer, Tom
AU - Zhuang, Xiaoying
AU - Park, Harold S.
AU - Rabczuk, Timon
PY - 2016/5/12
Y1 - 2016/5/12
N2 - We present an extended finite element formulation for piezoelectric nanobeams and nanoplates that is coupled with topology optimization to study the energy harvesting potential of piezoelectric nanostructures. The finite element model for the nanoplates is based on the Kirchoff plate model, with a linear through the thickness distribution of electric potential. Based on the topology optimization, the largest enhancements in energy harvesting are found for closed circuit boundary conditions, though significant gains are also found for open circuit boundary conditions. Most interestingly, our results demonstrate the competition between surface elasticity, which reduces the energy conversion efficiency, and surface piezoelectricity, which enhances the energy conversion efficiency, in governing the energy harvesting potential of piezoelectric nanostructures.
AB - We present an extended finite element formulation for piezoelectric nanobeams and nanoplates that is coupled with topology optimization to study the energy harvesting potential of piezoelectric nanostructures. The finite element model for the nanoplates is based on the Kirchoff plate model, with a linear through the thickness distribution of electric potential. Based on the topology optimization, the largest enhancements in energy harvesting are found for closed circuit boundary conditions, though significant gains are also found for open circuit boundary conditions. Most interestingly, our results demonstrate the competition between surface elasticity, which reduces the energy conversion efficiency, and surface piezoelectricity, which enhances the energy conversion efficiency, in governing the energy harvesting potential of piezoelectric nanostructures.
KW - Surface elasticity
KW - Surface piezoelectricity
KW - Topology optimization
KW - ZnO nanostructures
UR - http://www.scopus.com/inward/record.url?scp=84973369555&partnerID=8YFLogxK
U2 - 10.1016/j.jmps.2016.03.027
DO - 10.1016/j.jmps.2016.03.027
M3 - Article
AN - SCOPUS:84973369555
VL - 94
SP - 316
EP - 335
JO - Journal of the Mechanics and Physics of Solids
JF - Journal of the Mechanics and Physics of Solids
SN - 0022-5096
ER -