一种改进型1-3-2压电复合材料的研究
Study of an Improved 1-3-2 Type Piezoelectric Composite Material
井苏杰 1于肇贤 1王宏伟1
作者信息
- 1. 北京信息科技大学 理学院,北京 100192
- 折叠
摘要
高质量的压电换能器需要具备较高的机电耦合系数和灵敏度.该文在传统型 1-3-2 压电复合材料的基础上提出了一种改进型 1-3-2 压电材料,提高了压电换能器的机电耦合系数和换能器的接收灵敏度.通过有限元仿真分析了不同间距对改进型 1-3-2 压电材料敏感元件的谐振频率、反谐振频率及机电耦合系数的影响,并与传统 1-3-2 型压电复合材料进行了对比.结果表明,与传统型 1-3-2 压电复合材料相比,在相同间距条件下,改进型压电材料的机电耦合系数约大 0.03.制做的 3 种不同间距改进型压电材料表明,间距为 1 mm的改进型压电材料的机电耦合系数较大,约为 0.68.
Abstract
High-quality piezoelectric transducers require high electromechanical coupling coefficients and sensitiv-ity.Based on the conventional 1-3-2 type piezoelectric composite material,an improved 1-3-2 type piezoelectric mate-rial is proposed to enhance the electromechanical coupling coefficient and receiving sensitivity of the piezoelectric transducer.The effects of different spacings on the resonance frequency,anti-resonance frequency,and electrome-chanical coupling coefficient of the sensitive elements of the improved 1-3-2 piezoelectric material are analyzed by fi-nite-element simulation and compared with those of the traditional 1-3-2 piezoelectric composite material.The results show that the electromechanical coupling coefficient of the improved piezoelectric material is larger than that of the traditional 1-3-2 piezoelectric composite material with same spacing by approximately 0.03.Three improved piezoe-lectric materials with different spacings were fabricated.The results show that the improved piezoelectric material with a spacing of 1 mm has a large electromechanical coupling coefficient of about 0.68.
关键词
不同间距/1-3-2型压电复合材料/改进型/谐振频率/反谐振频率/机电耦合系数Key words
different spacing 1-3-2 type piezoelectric composite material/improved type/resonant frequency/an-ti-resonant frequency/electromechanical coupling coefficient引用本文复制引用
基金项目
国家自然科学基金(61771060)
北京市教委科研项目科技重点基金(KZ202111232050)
出版年
2024