| 楼宇设备工程中的结构声源的简化描述 |
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| 引用本文： | 苏建新.楼宇设备工程中的结构声源的简化描述[J].噪声与振动控制,2005,25(4):23-25. |
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| 作者姓名： | 苏建新 |
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| 作者单位： | 汕头大学,物理系,广东汕头,515063 |
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| 基金项目： | 本文受汕头大学博士启动基金支持. |
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| 摘 要： | 自由速度矢量和导纳矩阵是对结构噪声源的完整描述,但由于包含太多的元素,缺乏实用性,需要进行简化。本文以特征值理论为基础,针对楼宇设备工程中具有较普遍的大导纳源安装到小导纳支撑结构的特点,进行简化描述问题的研究。结果表明,进入到支撑结构的功率可近似的表示成支撑结构平均点导纳实部与独立支撑结构的机器各点的阻塞力的平方和的乘积,从而把描述结构噪声源包含过多的元素收缩成为一个参数。
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| 关 键 词： | 振动与波 噪声与振动控制 简化描述 模拟和实验 结构声源 |
| 文章编号： | 1006-1355(2005)04-0023-03 |
| 收稿时间： | 2005-03-08 |
| 修稿时间： | 2005年3月8日 |
Simplified Characterization of Structure-Borne Sound Sources for Building Servers Engineering |
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| SU Jian-xin.Simplified Characterization of Structure-Borne Sound Sources for Building Servers Engineering[J].Noise and Vibration Control,2005,25(4):23-25. |
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| Authors: | SU Jian-xin |
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| Abstract: | The free velocity vectors and mobility matrices provide complete characterization of structure-borne sound sources, but lack convenience because they contain many elements. So it is necessary to simplify characterization of structure-borne sound sources. In this paper, based on eigenvalue theory the simplification characterization problem has been studied for building servers engineering field where the mobilities of the structure-borne sound sources are much large than that of the supporting structure. the result show the power emission from source into supporting structure can be written approximatively as the product of the mean value of real part point mobility and the total square applied force therefore the elements for characterization of structure-borne sound sources are contracted. |
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| Keywords: | vibration and wave noise and vibration control simplified characterization simulation and experiment structure-borne sound sources |
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