【作者】 董明荣； 许学忠； 孙德玉； 刘瑜；

【Author】 Dong Ming-rong Xu Xue-zhong Sun De-yu Liu Yu (Northwest lnstitute of Nuclear Technology,Xi’an,Shanxi,710024)

【机构】 西北核技术研究所；

【摘要】 根据研制指向性声源的需要,提出了超声换能器阵列辐射声场的一种计算方法．采用瑞利积分式计算单个超声换能器的指向性,对几种典型平面阵列构型的指向性分布进行了计算,并且把正六边形阵列的计算结果和实验结果进行了对比．结合直射线声传播预测理论以及阵列指向性计算结果,计算超声换能器阵列在三维空间中的辐射声场,其结果能较直观的反映声场的指向性分布和强度。更多还原

【Abstract】 In order to research the directional speaker,a calculation method for the sound field of the ultrasonic transducer arrays is presented.Based on the Rayleigh-Sommerfeld diffraction formula,the directivity of an ultrasonic transducer and the directivity distribution of some typical flat array structures are calculated out,and the hexagonal array calculation results are contrasted with the experiments results.Combining the beeline noise prediction theories and the calculation result of the array directivity,the sound field of ultrasonic transducer arrays in the three-dimensional space is calculated out.The results can make an intuitionistic show of the directivity distribution and intensity of the sound field.更多还原