| 结构声辐射的声功率模态分析研究 |
| |
| 引用本文： | 李直,黎胜,刘彦森.结构声辐射的声功率模态分析研究[J].中国舰船研究,2012,7(1):35-40,56. |
| |
| 作者姓名： | 李直 黎胜 刘彦森 |
| |
| 作者单位： | 1. 大连理工大学运载工程与力学学部船舶工程学院工业装备结构分析国家重点实验室,辽宁大连,116024
2. 水下测控技术重点实验室,辽宁大连,116013 |
| |
| 基金项目： | 国家部委基金资助（9140C××××071001）; 国家安全重大基础研究项目（6×××××1011） |
| |
| 摘 要： | 采用声功率模态对结构声辐射的分析和控制进行研究。基于声功率的二次型表达式和Rayleigh积分建立辐射声功率与激励力之间的关系,并在此基础上得出以力为变量的声功率表达式。以板结构声辐射为例,分析声功率模态的振型、声功率模态下的声功率计算和模态截断,并讨论结构声辐射的声功率模态控制方法。通过声功率模态与结构振动模态和结构声辐射模态的对比,系统地阐述声功率模态的特点。
|
| 关 键 词： | 声辐射 声功率模态 模态力 船舶 |
Analysis of Structural Acoustic Radiation Using Acoustic Power Modes |
| |
| Li Zhi
,
Li Sheng
,
Liu Yan-sen.Analysis of Structural Acoustic Radiation Using Acoustic Power Modes[J].Chinese Journal of Ship Research,2012,7(1):35-40,56. |
| |
| Authors: | Li Zhi Li Sheng Liu Yan-sen |
| |
| Institution: | 1 State Key Laboratory of Structural Analysis for Industrial Equipment,School of Naval Architecture Engineering,Faculty of Vehicle Engineering and Mechanics,Dalian University of Technology,Dalian 116024,China 2 Key Laboratory for Underwater Test and Control Technology,Dalian 116013,China |
| |
| Abstract: | Modal analysis of structural and control method of acoustic radiation from a vibrating structure were discussed using acoustic power modes.The relationship between radiated acoustic power and exciting force was obtained based on the quadratic form of the acoustic power and the Rayleigh integral.Then the acoustic power was expressed directly by the exciting force as the variable.To structural acoustic radiation of plate as an example,analyzed the modal shapes of the acoustic power modes,computing acoustic power by the truncated acoustic power modes.And discussed the acoustic radiation control method of structure based on acoustic power modes.The merits of the acoustic power mode were presented by comparison with structural vibration mode and acoustic radiation mode. |
| |
| Keywords: | acoustic radiation acoustic power mode modal force ship |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
