| 声振响应仿真中声场的一种等效处理方法 |
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| 引用本文： | 韩丽,秦朝红,靳荣华,吕庆山.声振响应仿真中声场的一种等效处理方法[J].北京理工大学学报,2013,33(Z2):80-83. |
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| 作者姓名： | 韩丽 秦朝红 靳荣华 吕庆山 |
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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;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;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;中国兵器工业导航与控制技术研究所, 北京 100089 |
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| 基金项目： | 国防基础科研项目（C0320110001） |
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| 摘 要： | 对采用有限元法进行声振响应预示时复现混响声场声压的互功率谱进行了探讨，提出了一种等效处理方法，可有效减少需计算的互谱数量. 以某型号仪器舱为研究对象，利用该方法对其声振响应进行预示，同时对不考虑互谱的声场作用下的仪器舱振动响应进行预示，并与试验进行对比. 结果表明，利用等效处理方法预示的结果与试验数据一致，验证了该方法的有效性，适于工程应用.
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| 关 键 词： | 声振响应预示 互功率谱 空间相关 有限元法 |
| 收稿时间： | 2013/11/15 0:00:00 |
An Equivalent Dealing Method of Reverberant Acoustic Field in Vibro-Acoustic Responses Simulation |
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| HAN Li,QIN Zhao-hong,JIN Rong-hua and L&#; Qing-shan.An Equivalent Dealing Method of Reverberant Acoustic Field in Vibro-Acoustic Responses Simulation[J].Journal of Beijing Institute of Technology(Natural Science Edition),2013,33(Z2):80-83. |
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| Authors: | HAN Li QIN Zhao-hong JIN Rong-hua and L&#; Qing-shan |
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| Institution: | Science and Technology on Reliability and Environment Engineering Laboratory, Beijing Institute of Structure and Environment Engineering, Beijing 100076, China;Science and Technology on Reliability and Environment Engineering Laboratory, Beijing Institute of Structure and Environment Engineering, Beijing 100076, China;Science and Technology on Reliability and Environment Engineering Laboratory, Beijing Institute of Structure and Environment Engineering, Beijing 100076, China;North China System Engineering Institute, Beijing 100089, China |
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| Abstract: | How to recover cross power spectral density (PSD) in finite element method to predict vibro-acoustic response was discussed in this paper. Its validity was testified by the reverberant acoustic experiment results of some cabin. Predicted responses without regard to cross PSD are in good agreement with the experiment results, which indicate that the method can be used to predict vibro-acoustic responses and are suitable for engineering applications. |
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| Keywords: | vibro-acoustic response prediction cross power spectral density spatial correlation finite element method |
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