您的位置:首页  > 论文页面

三角形压电悬臂梁俘能器的优化设计

发表时间:2016-07-15  浏览量:4430  下载量:2425
全部作者: 胡顶聪,师阳,姚宏,高原文
作者单位: 兰州大学土木工程与力学学院
摘 要: 建立三角形双晶压电悬臂梁的理论模型,并导出输出电压的表达式。运用有限元软件ANSYS建立有限元模型并进行仿真分析,得出了能量收集器的输出电压值,并与理论值进行对比,结果基本一致。同时,对模型进行模态分析与谐响应分析,分析三角形压电振子的工作状态。利用改变压电材料和基板的尺寸等参数,对俘能器进行优化设计。结果表明,在梁的固有频率附近,输出电压达到最高;改变材料尺寸可以有效调控共振频率,使其接近环境中的频率。同时,结构的尺寸参数在频率调控和性能优化方面也十分重要。
关 键 词: 固体力学;三角形;压电;ANSYS;电压
Title: Optimal design of triangular piezoelectric cantilever beam energy harvester
Author: HU Dingcong, SHI Yang, YAO Hong, GAO Yuanwen
Organization: School of Civil Engineering and Mechanics, Lanzhou University
Abstract: A theoretical model of the triangular piezoelectric bimorph cantilever beam was established and then the output voltage expression was derived. At the same time, the finite element model was established using finite element software ANSYS and some simulation analysis were given. The output voltage of the energy harvesting device was obtained. The simulation results are in good agreement with the theoretical ones. Meanwhile, using modal analysis and harmonic response analysis, we analyzed the triangular piezoelectric vibrator’s operating state. The energy harvester was optimized by changing piezoelectric and substrate parameters. The result shows that the voltage reaches its highest value near the beam’s natural frequency; resonant frequency can be well adjusted by changing material’s size in order to match environment’s frequency. At the same time, the structure’s parameters are very important in adjusting frequency and optimizing.
Key words: solid mechanics; triangle; piezoelectric; ANSYS; voltage
发表期数: 2016年7月第13期
引用格式: 胡顶聪,师阳,姚宏,等. 三角形压电悬臂梁俘能器的优化设计[J]. 中国科技论文在线精品论文,2016,9(13):1377-1385.
 
0 评论数 0
暂无评论
友情链接