Design and performance analysis of 3-D braided piezoelectric composite vibration energy harvester

Abstract

In this article, an innovative three-dimensional (3-D) braided piezoelectric composite vibration energy harvester (BPCVEH) is designed. The geometry and representative volume unit (RVU) models of the 3-D braided piezoelectric composites (BPCs) are established based on the braided process. The effective elastic, piezoelectric, and dielectric constants of the 3-D BPCs are also predicted. The electro-mechanical coupling vibration equation of the 3-D BPCVEH under forced vibration is derived, and its output response and vibration mode are analyzed. The effects of environment frequency, load resistance, and external excitation acceleration on the voltage and power response of 3-D BPCVEH with different volume fractions are studied.

Keywords:

• Energy harvester
• 3-D braided piezoelectric composites
• representative volume unit
• mechanical-electrical coupling
• frequency domain response

Disclosure statement

No potential conflict of interest was reported by the author(s).

Data availability statement

The data that support the findings of this study are available upon reasonable request from the authors.

Additional information

Funding

The work is supported by the Natural Science Foundation of Shandong Province [Grant No. ZR2020MA059].