| 同尺寸弯振圆盘辐射声场指向性研究 |
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| 引用本文： | 张雁蓉,贺西平,常嘉树.同尺寸弯振圆盘辐射声场指向性研究[J].咸阳师范学院学报,2011,26(4):32-35. |
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| 作者姓名： | 张雁蓉 贺西平 常嘉树 |
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| 作者单位： | 陕西师范大学应用声学研究所,陕西西安,710062 |
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| 基金项目： | 国家自然科学基金项目，中央高校基本科研业务费专项基金项目 |
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| 摘 要： | 对薄圆盘的弯曲振动和辐射声场的特性进行了研究,推导出了三种边界条件下圆盘辐射声场指向性的数值表达式,编制程序并研究其声辐射特性。结果表明,相同尺寸不同边界条件下圆盘指向性的尖锐程度不同,固定边界条件下圆盘辐射声场指向性最佳,自由边界条件下较差,并且随着圆盘模式和几何尺寸的增加各边界条件下圆盘的指向性均逐渐变差。
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| 关 键 词： | 弯曲振动 辐射声场 圆盘指向性 |
Study on Directivity Pattern of Radiated Sound Field by Flat Circular Plate with Flexural Vibration Under the Same Size |
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| ZHANG Yan-rong,HE Xi-ping,CHANG Jia-shu.Study on Directivity Pattern of Radiated Sound Field by Flat Circular Plate with Flexural Vibration Under the Same Size[J].Journal of Xianyang Normal University,2011,26(4):32-35. |
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| Authors: | ZHANG Yan-rong HE Xi-ping CHANG Jia-shu |
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| Institution: | ZHANG Yan-rong,HE Xi-ping,CHANG Jia-shu (Institute of Applied Acoustics,Shaanxi Normal University,Xi'an 710062,Shaanxi,China) |
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| Abstract: | Flexural vibration and radiated sound field of a flat circular plate were study, the directivity pattern of a flat circular plate with flexural vibration under the three boundary condition is derived , and a computer program is developed, which can study on the radiated sound field. The results showed that the acuity of the directivity patterns is different under the same size of the flat circular plate, that fixed conditions is best, and free boundary conditions is worst.However, the directivity pattern of flat circular plate becomes poor when the vibrational order and the siae of the flat circular plate in flexural are increased. |
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| Keywords: | flexural vibratio radiated sound field flat circular plate directivity pattern |
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