摘要
建立了悬臂梁式压电振动能量收集装置的模型。为了优化悬臂梁式压电振动能量收集装置的结构并提高发电能力,采用有限元仿真分析软件分析了外部激励频率、压电薄膜厚度、质量块厚度对装置固有频率和输出电压的影响。仿真分析发现:当外部激励频率等于压电悬臂梁的一阶固有频率时,悬臂梁振动幅度最大,压电薄膜的输出电压最高;当外部载荷一定时,压电薄膜的输出电压会随着压电薄膜厚度的增加而增大;当增加质量块厚度时,压电悬臂梁的固有频率会逐渐降低,同时压电薄膜的输出电压会呈现增大趋势。
In this paper,a model of a cantilever beam-based piezoelectric vibration energy harvester is established.To optimize its structure and improve power generation capability,finite element simulation software is utilized to analyze the effects of external excitation frequency,piezoelectric film thickness,and mass block height on the natural frequency and output voltage of the device.Simulation results reveal that when the external excitation frequency approaches the first-order natural frequency of the cantilever beam,the beam achieves maximum vibration amplitude,resulting in the highest output voltage of the piezoelectric film.Under constant external load,the output voltage of the piezoelectric film increases with the film thickness.Additionally,as the height of the mass block increases,the natural frequency of the piezoelectric cantilever beam decreases,while the output voltage of the piezoelectric film shows a rising trend.
作者
胡嘉昕
曾鹏飞
郝永平
HU Jiaxin;ZENG Pengfei;HAO Yongping(School of Mechanical Engineering,Shenyang Ligong University,Shenyang 110159,China;Liaoning Province Key Laboratory of Advanced Manufacturing Technology and Equipment,Shenyang Ligong University,Shenyang 110159,China;School of Equipment Engineering,Shenyang Ligong University,Shenyang 110159,China)
出处
《成组技术与生产现代化》
2025年第3期25-29,35,共6页
Group Technology & Production Modernization
基金
辽宁省应用基础研究计划项目(2022JH2/101300254)。
关键词
悬臂梁
振动
压电效应
压电薄膜
cantilever beam
vibration
piezoelectric effect
piezoelectric film
