| 纵振-方形声源辐射声场的计算 |
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| 引用本文： | 李娜,贺西平,宁景锋.纵振-方形声源辐射声场的计算[J].井冈山大学学报（自然科学版）,2011(3):28-31. |
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| 作者姓名： | 李娜 贺西平 宁景锋 |
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| 作者单位： | 陕西师范大学应用声学研究所; |
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| 基金项目： | 国家自然科学基金项目(10874107); 中央高校基本科研业务费专项资金项目(GK201001008) |
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| 摘 要： | 指向性是描述声源的一个很重要的声性能参数.边界自由条件下,方形薄板没有位移解析解,加之纵振换能器在激励方形辐射板时与板有一定的接触面积,不能视为点接触,这增加了计算纵振一方形辐射声源指向性的难度.本文基于对瑞利积分公式的离散,结合有限元数值计算方法,计算了不同激励面积下方板的指向性.结果 表明:激励面积将影响方板表面节...
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| 关 键 词： | 方形薄板 纵振换能器 激励面积 指向性 |
DIRECTIVITY PATTERN OF COMPOSITE SYSTEM OF THIN SQUARE PLATE AND LONGITUDINAL TRANSDUCER |
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| LI N,HE Xi-ping,NING Jing-feng.DIRECTIVITY PATTERN OF COMPOSITE SYSTEM OF THIN SQUARE PLATE AND LONGITUDINAL TRANSDUCER[J].Journal of Jinggangshan University(Natural Sciences Edition),2011(3):28-31. |
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| Authors: | LI N HE Xi-ping NING Jing-feng |
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| Institution: | LI Na,HE Xi-ping,NING Jing-feng (Applied Acoustics Institute,Shanxi Normal University,Xi'an,Shanxi 710062,China) |
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| Abstract: | It is an important acoustic parameters that directivity pattern describes the characteristics of radiated acoustic field. Square thin plate with flexural vibration under free boundary conditions have no analytical solutions in addition there have excited area when longitudinal transducer excited square plate,so that it is very hard to calculate directivity pattern. In this paper,we study the directivity pattern of square plate based on discrete Raleigh's integral formula and the finite element method. The e... |
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| Keywords: | square plate longitudinal transducer excited area directivity pattern |
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