| 基于有限元法的随机振动与噪声复合响应数值模拟分析 |
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| 引用本文： | 吴连军,陈红永. 基于有限元法的随机振动与噪声复合响应数值模拟分析[J]. 装备环境工程, 2021, 18(3): 34-37. DOI: 10.7643/issn.1672-9242.2021.03.006 |
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| 作者姓名： | 吴连军 陈红永 |
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| 作者单位： | 中国工程物理研究院总体工程研究所,四川 绵阳 621999 |
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| 摘 要： | 目的 实现结构宽频域随机振动与噪声复合响应分析.方法 针对噪声与随机振动复合响应分析问题,首先基于声学流体流固耦合动力学有限元分析理论,利用现有商业有限元分析软件,建立声场-结构直接耦合动力学有限元模型,采用直接法进行结构谐响应分析,获得结构不同位置的频响函数曲线,再利用频响函数曲线结合理论分析间接获得结构不同位置在随...
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| 关 键 词： | 有限元法 随机振动 噪声 谐响应分析 频响函数 功率谱 |
| 收稿时间： | 2021-02-04 |
| 修稿时间： | 2021-02-16 |
Numerical Analysis of Random Vibro-acoustic Based on Finite Element Method |
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| WU Lian-jun,CHEN Hong-yong. Numerical Analysis of Random Vibro-acoustic Based on Finite Element Method[J]. Equipment Environmental Engineering, 2021, 18(3): 34-37. DOI: 10.7643/issn.1672-9242.2021.03.006 |
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| Authors: | WU Lian-jun CHEN Hong-yong |
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| Affiliation: | Institute of System Engineering, China Academy of Engineering Physics, Mianyang 621999, China |
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| Abstract: | In order to realize the numerical analysis of random vibro-acoustic. First, a dynamic model of acoustic-structure direct coupling is built based on the dynamic finite element method about acoustic-structural interaction, the frequencies response function of structural was analyzed based on a direct harmonic analysis method. Then, the Power Spectrum Density curve on random excitation is indirect get through the frequencies response function. An analysis of random vibro-acoustic is simulated in 10~5000 Hz based on the method. |
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| Keywords: | finite element method random vibration noise harmonic analysis frequencies response function power spectrum |
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