Topology optimization of energy harvesting devices using piezoelectric materials |
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Authors: | Bin Zheng Ching-Jui Chang Hae Chang Gea |
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Affiliation: | (1) School of Mechatronics Engineering, University of Electronic Science and Technology of China, Chengdu, 610054, China;(2) Department of Mechanical and Aerospace Engineering Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA |
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Abstract: | Energy harvesting devices based on the piezoelectric effect that converts ambient energy to electric energy is a very attractive
energy source for remote sensors and embedded devices. Although topology optimization has been applied to the design of piezoelectric
transducers, the locations of piezoelectric materials are predefined and only the optimal layout of elastic materials is considered.
In this paper, both elastic materials as well as piezoelectric materials are considered for the design of energy harvesting
devices under the topology optimization formulation. The objective function for this study is to maximize the energy conversion
factor. The sensitivities of both stored strain energy and electrical energy are derived by the adjoint method. Examples of
energy harvesting devices are presented and discussed using the proposed method. |
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Keywords: | Topology optimization Energy harvesting devices Piezoelectric materials |
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