Analysis on radial vibration of a stack of piezoelectric shells

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• 作者：Likun Wang^a ; ^{wlikun1962@163.com" class="auth_mail" title="E-mail the corresponding author} ; Lei Qin^a ; ^{qinlei110@126.com" class="auth_mail" title="E-mail the corresponding author} ; Wenjie Li^a ; ^{620794115@qq.com" class="auth_mail" title="E-mail the corresponding author} ; Bin Zhang^a ; ^{bin_zhang2011@163.com" class="auth_mail" title="E-mail the corresponding author} ; Yu Lu^a ; Guang Li^b ; ^{liguang@pku.edu.cn" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Piezoelectric shell stack ; Radial vibration ; Mode analysis
• 刊名：Ceramics International
• 出版年：2015
• 出版时间：July 2015
• 年：2015
• 卷：41
• 期：supp_S1
• 页码：S856-S860
• 全文大小：758 K

文摘

The vibration properties of layers of piezoelectric shells are investigated by theoretical analysis, finite element simulation, and experimental measurement. The equivalent admittance of a 2-layered shell is first analyzed based on the admittance equation of a single shell, and the resonant frequencies of shell stacks are then deduced by setting the equivalent admittance to infinity. The analytical expressions are calculated numerically, and the results are expressed in terms of resonant frequencies and bandwidths as a function of average radius. Comparisons with calculation, finite element analysis and measurement show general agreement, although the bandwidth figures show some variations.