基于PVDF的枕形压电发电装置性能仿真分析

提出了一种枕形压电发电装置,为了解该压电发电装置的发电性能,该文对其进行了有限元仿真。结果表明,弹性金属基片厚度、弧形压电梁宽度及初始曲率半径的增加将引起压电发电装置压电薄膜输出电压的降低;弧形压电梁的长度及弹性模量比的增加将引起压电薄膜输出电压的不断升高;压电薄膜厚度的增加将使其输出电压先增大后减小;弧形压电梁内侧压电薄膜的输出电压都要大于外侧压电薄膜的输出电压,且铍青铜基片压电梁要优于钢基片压电梁。

Performance Simulation Analysis on Pillow shaped Piezoelectric Harvester Based PVDF

A pillow shaped piezoelectric harvester was proposed in this paper. With the aim to know about the generating capacity of the piezoelectric harvester, the finite element simulation was performed.The simulation results showed that the output voltages of the piezoelectric harvester decreased with the increase of the thickness of the flexible substrate,the width of the piezoelectric cantilever and the initial curvature radius; the output voltages of the piezoelectric harvester increased with the increase of the length of the piezoelectric cantilever and the elastic modulus ratio;the output voltages of the piezoelectric harvester first increased and then decreased with the increase of thickness of the piezoelectric film.Furthermore, the output voltages of the inside piezoelectric film of the piezoelectric cantilever were larger than the outside piezoelectric film and the beryllium bronze substrate piezoelectric cantilever was superior to the steel substrate piezoelectric cantilever.