| 半自由声场和混响声场等效转换方法研究 |
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| 引用本文： | 任方,冯秉初,鲁勇.半自由声场和混响声场等效转换方法研究[J].强度与环境,2012(2):20-26. |
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| 作者姓名： | 任方 冯秉初 鲁勇 |
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| 作者单位： | 北京强度环境研究所可靠性与环境工程技术重点实验室,北京100076 |
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| 摘 要： | 从结构振动场和声场之间的关系出发,计算声激励下的结构响应;通过分析混响声场和半自由声场的基本特性,用试验法获得了声激励下结构模态和不同声场的空间相关系数,利用广义载荷响应等效理论,给出了典型结构在不同声场转换关系下的等效转换关系。
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| 关 键 词： | 混响声场 半自由声场 空间相关系数 等效转换 |
Research on the equivalent conversion method for semi-free field and reverberant field |
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| REN Fang,FENG Bingchu,LU Yong.Research on the equivalent conversion method for semi-free field and reverberant field[J].Structure & Environment Engineering,2012(2):20-26. |
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| Authors: | REN Fang FENG Bingchu LU Yong |
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| Institution: | (Science and Technology on Reliability and Environment Engineering Laboratory, Beijing Institute of Structure and Environment Engineering, Beijing 100076, China) |
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| Abstract: | Based on the connection between structural vibration field and sound field, the structural response under acoustic excitation was calculated. With analyzing the basic properties of reverberant field and semi-free field, the structural modal and the spatial correlation coefficient of different sound fields was obtained by experiment. Accordingly, by means of the equivalent theory of generalized load, equivalent conversion relation is presented for typical structure in different sound fields |
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| Keywords: | reverberant field semi-free field spatial correlation coefficient equivalent conversion |
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