【作者】 赵筱； 李锦； 潘凯； 刘大钊；

【Author】 ZHAO Xiao;LI Jin;PAN Kai;LIU Da-zhao;Shaanxi Key Lab.of Ultrasound,Applied Acoustic Institute,Shaanxi Normal University;

【机构】 陕西师范大学应用声学研究所,超声重点实验室；

【摘要】 研究了菱形环活塞声源辐射声场的特性。利用瑞利积分,计算了菱形环活塞声源辐射声场的声压分布,画出了声压分布的二维图,并利用数值计算分析了辐射声场的指向特性。结果表明:当菱形环活塞的尺寸一定时,随着辐射频率的增大,辐射声场的指向性变得越来越尖锐,同时旁瓣增多。更多还原

【Abstract】 The focus is laid on analyzing radiated sound field of diamond ring piston.The sound press distribution in three and two-dimensional space has been calculated out by use of Reigly-integration,and its far field distribution,plotted out by numerical method,and analysis is made of directivity of wave steering.The result shows that the directivity intensifies with the increases of each parameter of the ring piston under different conditions respectively.更多还原