压电双叠片复合弯曲振动换能器辐射声场研究
发布时间：2019-05-18 11:54
【摘要】：采用瑞利法对固定边界条件下双叠片复合弯振换能器进行理论研究,在计算谐振频率及位移分布函数的基础上,利用声场迭加原理推导出双叠片复合弯曲振动换能器辐射声压及其指向性表达式,数值计算分析了复合换能器结构参数对指向性的影响,并与相应活塞板指向性进行比较。结果表明,复合弯曲换能器各结构参数对声场指向性会产生不同影响,当其他参数给定,其声场指向性具有无旁瓣,瓣角大,声压作用距离短,频率增大时指向性瓣角变小等特点。
[Abstract]:Based on the calculation of resonance frequency and displacement distribution function, the double laminated composite bending vibration transducer under fixed boundary condition is studied theoretically by using Rayleigh method. The expression of radiation sound pressure and directivity of double laminated composite bending vibration transducer is derived by using the principle of sound field superposition. The influence of structural parameters of composite transducer on directivity is calculated and analyzed and compared with that of piston plate. The results show that the structural parameters of the composite bending transducer have different effects on the directivity of the sound field. when the other parameters are given, the directivity of the sound field has no sidelobe, the lobe angle is large, and the acting distance of the sound pressure is short. When the frequency increases, the directional valve angle becomes smaller and so on.
【作者单位】： 渭南师范学院数理学院;
【基金】：陕西省教育厅自然科学专项基金资助项目(15JK1242) 渭南师范学院理工人才基金资助项目(15ZRRC09);渭南师范学院科研育苗基金资助项目(15YKP009)
【分类号】：TB552
，
本文编号：2479967
[Abstract]:Based on the calculation of resonance frequency and displacement distribution function, the double laminated composite bending vibration transducer under fixed boundary condition is studied theoretically by using Rayleigh method. The expression of radiation sound pressure and directivity of double laminated composite bending vibration transducer is derived by using the principle of sound field superposition. The influence of structural parameters of composite transducer on directivity is calculated and analyzed and compared with that of piston plate. The results show that the structural parameters of the composite bending transducer have different effects on the directivity of the sound field. when the other parameters are given, the directivity of the sound field has no sidelobe, the lobe angle is large, and the acting distance of the sound pressure is short. When the frequency increases, the directional valve angle becomes smaller and so on.
【作者单位】： 渭南师范学院数理学院;
【基金】：陕西省教育厅自然科学专项基金资助项目(15JK1242) 渭南师范学院理工人才基金资助项目(15ZRRC09);渭南师范学院科研育苗基金资助项目(15YKP009)
【分类号】：TB552
，
本文编号：2479967
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