传感技术学报Issue(1)：84-89,6.DOI:10.3969/j.issn.1004-1699.2014.01.016
基于ANSYS的埋入混凝土中压电陶瓷谐振频率分析
Analysis of the Harmonic Frequency to Piezoelectric Ceramic Embedded in Concrete
摘要
Abstract
A research about the vibration mode of piezoelectric ceramic(PZT-5H)based on ANSYS has been made, combining with harmonic response algorithm to obtain three different regions of vibration-frequency curve of piezoelectric ceramic,realizing the simulation of acoustic pressure cloud picture of the electronic-acoustic system with embedded type of piezoelectric concrete module while coupling piezoelectric ceramic and concrete units,and further receiving the maximum acoustic pressure and acoustic fields distribution under different excitation frequency. The results shows that the piezoelectric ceramic has four maximum amplitude points in 20 kHz~100 kHz. Along with the increase of harmonic frequency,and the increase of amplitude,the vibration distribution takes on the variation trend of scattering before concentration;through the analysis of harmonic response, it shows that different regions of piezoelectric ceramic acoustic radiant surface all has the maximum vibration-frequency nearby 80 kHz;according to the analysis of acoustic fields of electronic-acoustic system,if the excitation frequency is 79. 666 kHz,the acoustic pressure is the maximum,the acoustic fields is the best and the acoustic directivity is concentrated.关键词
压电陶瓷/混凝土/谐振频率/电-声系统Key words
concrete/piezoelectric ceramic/harmonic frequency/electronic-to-acoustic system分类
数理科学引用本文复制引用
刘丽,陈雨,徐志龙,汪琴,赵爱荣..基于ANSYS的埋入混凝土中压电陶瓷谐振频率分析[J].传感技术学报,2014,(1):84-89,6.基金项目
国家自然科学基金项目(61174025) （61174025）
国家自然科学青年基金项目(50808186) （50808186）
重庆市自然科学基金项目(CSTC,2008BB0155) （CSTC,2008BB0155）
