• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control >Piezoelectrically actuated flextensional micromachined ultrasound transducers. I. Theory
【24h】

Piezoelectrically actuated flextensional micromachined ultrasound transducers. I. Theory

机译：压电驱动的屈伸微机械超声换能器。一，理论

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This series of two papers considers piezoelectrically actuated flextensional micromachined ultrasound transducers (PAFMUTs) and consists of theory, fabrication, and experimental parts. The theory presented in this paper is developed for an ultrasound transducer application presented in the second part. In the absence of analytical expressions for the equivalent circuit parameters of a flextensional transducer, it is difficult to calculate its optimal parameters and dimensions and difficult to choose suitable materials. The influence of coupling between flexural and extensional deformation and that of coupling between the structure and the acoustic volume on the dynamic response of piezoelectrically actuated flextensional transducer are analyzed using two analytical methods: classical thin (Kirchhoff) plate theory and Mindlin plate theory. Classical thin plate theory and Mindlin plate theory are applied to derive two-dimensional plate equations for the transducer and to calculate the coupled electromechanical field variables such as mechanical displacement and electrical input impedance. In these methods, the variations across the thickness direction vanish by using the bending moments per unit length or stress resultants. Thus, two-dimensional plate equations for a step-wise laminated circular plate are obtained as well as two different solutions to the corresponding systems. An equivalent circuit of the transducer is also obtained from these solutions.
机译：这一系列的两篇论文考虑了压电致动的微拉伸超声换能器（PAFMUT），并包括理论，制造和实验部分。本文介绍的理论是为第二部分介绍的超声换能器应用开发的。在缺乏用于挠曲换能器的等效电路参数的解析表达式的情况下，难以计算其最佳参数和尺寸，并且难以选择合适的材料。弯曲和拉伸变形之间的耦合以及结构和声量之间的耦合对压电驱动的挠性拉伸换能器的动力响应的影响采用两种分析方法进行了分析：经典薄（基尔霍夫）薄板理论和Mindlin板理论。应用经典薄板理论和Mindlin板理论推导换能器的二维板方程，并计算耦合的机电场变量，例如机械位移和电输入阻抗。在这些方法中，通过使用每单位长度的弯矩或应力合力来消除厚度方向上的变化。因此，获得了用于逐步层压的圆形板的二维板方程以及相应系统的两个不同解。从这些解决方案还可以获得换能器的等效电路。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号