| 非规则声腔的结构-声耦合分析 |
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| 引用本文： | 罗超,饶柱石,赵玫.非规则声腔的结构-声耦合分析[J].振动与冲击,2006,25(1):64-66. |
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| 作者姓名： | 罗超 饶柱石 赵玫 |
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| 作者单位： | 上海交通大学振动、冲击、噪声国家重点实验室,上海,200030 |
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| 摘 要： | 以非规则封闭声腔为研究对象，从薄板振动方程和声学的经典波动方程出发，运用格林积分理论推导出了结构-声耦合系统在外力激励下的声压响应以及声腔边界振动响应的表达式。随后在规则声腔模型的数值仿真和理论分析中验证了这一理论的正确性，并将该理论应用于非规则封闭声腔的数值仿真，仿真结果能较好地反映出结构-声的耦合作用。
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| 关 键 词： | 结构-声耦合 非规则封闭声腔 模态耦合系数 数值仿真 有限元 |
| 收稿时间： | 07 15 2004 12:00AM |
| 修稿时间： | 11 8 2004 12:00AM |
ANALYSIS OF STRUCTURAL-ACOUSTIC COUPLING OF AN IRREGULAR ENCLOSURE |
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| Luo Chao,Rao Zhushi,Zhao Mei.ANALYSIS OF STRUCTURAL-ACOUSTIC COUPLING OF AN IRREGULAR ENCLOSURE[J].Journal of Vibration and Shock,2006,25(1):64-66. |
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| Authors: | Luo Chao Rao Zhushi Zhao Mei |
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| Abstract: | The analyzed object of the paper is an irregular enclosure.Based on the vibration equation of thin plate and the classic wave equation,the expressions of sound pressure and velocity responses for the structural-acoustic system are deduced by using Green's integral theorem.The deduced expressions are firstly used to analyze the responese of a(rectangular) enclosure in analytical as well as numerical fields.The coincidence of the results in both fields proves that the theoretical deduction and the numerical method are correct.Then the numerical simulation is carried out to analyze(structural)-acoustic coupling of an irregular enclosure.The structural-acoustic coupling can be well described by the result. |
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| Keywords: | structural-acoustic coupling irregular enclosure modal coupling coefficients numerical simulation FEM |
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