噪声与振动控制2024，Vol.44Issue(3)：1-7,7.DOI:10.3969/j.issn.1006-1355.2024.03.001
压电复合材料梯度分布声学特性研究
Research on Acoustic Characteristics of Piezoelectric Composites with Gradient Distribution of Piezoelectric Ceramics
摘要
Abstract
At present,piezoelectric composites are widely used in the application of sound absorption and noise reduction.However,their performance of low-frequency sound absorption is not ideal.Therefore,in this paper,an improved sound absorption model for the 0-3 type piezoelectric composite material with gradient distribution of piezoelectric ceramic volume content is proposed.Firstly,the theoretical formula of the piezoelectric composites with multi-gradient distribution is derived by the acoustic-electric analogy method and transfer matrix method.The presented model is verified by comparing the results with those in the existing literature.Next,the sound absorption coefficient of the model with a uniform distribution of the piezoelectric ceramics content is compared with that of the model with a gradient distribution of the piezoelectric ceramics content.It is found that the latter can significantly alter the acoustic impedance and the sound absorption coefficient.Further,the parametric study is carried out,which shows that,the low-frequency sound absorption coefficient of the piezoelectric composites can be significantly raised by decreasing the volume content of piezoelectric ceramics,increasing the gradient difference and increasing the thickness of the first layer of the material.关键词
声学/声电类比法/传递矩阵法/压电复合材料/梯度分布/吸声系数Key words
acoustics/electro-acoustical equivalent circuit method/transfer matrix method/piezoelectric composites/gradient distribution/sound absorption coefficient分类
能源与动力引用本文复制引用
朱从云,李保波,石鹏,丁国芳..压电复合材料梯度分布声学特性研究[J].噪声与振动控制,2024,44(3):1-7,7.基金项目
国家自然科学基金资助项目(51705545,15A460041) （51705545,15A460041）
河南省科技攻关资助项目(222102210311) （222102210311）
河南省高等学校重点科研资助项目(22A130006) （22A130006）
