期刊
ENGINEERING WITH COMPUTERS
卷 33, 期 1, 页码 137-148出版社
SPRINGER
DOI: 10.1007/s00366-016-0460-3
关键词
Piezoelectric; Multi-disciplinary optimisation; Shape and topology optimisation; Energy harvesting; Bimorph cantilever beam
Piezoelectric materials are excellent transducers for converting mechanical energy from the environment for use as electrical energy. The conversion of mechanical energy to electrical energy is a key component in the development of self-powered devices, especially enabling technology for wireless sensor networks. This paper proposes an alternative method for predicting the power output of a bimorph cantilever beam using a finite-element method for both static and dynamic frequency analyses. A novel approach is presented for optimising the cantilever beam, by which the power density is maximised and the structural volume is minimised simultaneously. A two-stage optimisation is performed, i.e., a shape optimisation and then a topology hole opening optimisation.
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