| 敷设二维周期块状阻尼结构的薄板声辐射数值计算 |
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| 引用本文： | 陈 源,田 丰,周敬东,等.敷设二维周期块状阻尼结构的薄板声辐射数值计算[J].噪声与振动控制,2014,34(1):92-94. |
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| 作者姓名： | 陈 源 田 丰 周敬东 等 |
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| 作者单位： | （ 湖北省农业机械工程研究设计院， 湖北工业大学， 武汉 430068 ） |
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| 基金项目： | 国家自然基金项目（50975081） |
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| 摘 要： | 本文借助有限元和边界元的数值算法，针对特定的薄板结构，探讨敷设二维周期块状阻尼结构对薄板声辐射特性的影响。数值计算结果表明，在特定频段内，敷设二维周期块状阻尼结构的薄板辐射声能量要小于敷设传统等面积的整块自由阻尼结构。同时，适当增加阻尼敷设面积及块状阻尼的结构周期数能有效降低薄板声辐射。
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| 关 键 词： | 声学 声辐射 二维周期结构 块状阻尼 |
| 收稿时间： | 2013-06-28 |
Numerical Calculation for Sound Radiation of Thin Plate with Two-dimensional Periodically Distributed Bulk-damping |
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| CHEN Yuan,TIAN Feng,ZHOU Jing-dong,ZHOU Ming-gang,WANG Yan-qing.Numerical Calculation for Sound Radiation of Thin Plate with Two-dimensional Periodically Distributed Bulk-damping[J].Noise and Vibration Control,2014,34(1):92-94. |
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| Authors: | CHEN Yuan TIAN Feng ZHOU Jing-dong ZHOU Ming-gang WANG Yan-qing |
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| Affiliation: | ( Hubei Research and Design Institute of Agriculture Machinery Engineering,Hubei University of Technology, Wuhan 430068, China ) |
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| Abstract: | Using FEM and BEM, the sound radiation characteristics of a thin plate with two- dimensional periodicallydistributed bulk-damping are studied. Numerical results show that the sound radiation power of this thin plate is less than thatof the plate with the traditional uniformly coated damping in specific frequency bands. Properly increasing damping laying areaand the period number of the bulk damping can effectively reduce the acoustic radiation of the thin plate. |
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| Keywords: | acoustics sound radiation two-dimensional periodic structure bulk damping |
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