| 振动模态与声模态的耦合特性分析 |
| |
| 引用本文： | 戴扬,陈藻.振动模态与声模态的耦合特性分析[J].振动工程学报,1992,5(2):98-104. |
| |
| 作者姓名： | 戴扬 陈藻 |
| |
| 作者单位： | 西北工业大学声学工程研究所，西北工业大学声学工程研究所，西北工业大学声学工程研究所 西安 710072，西安 710072，西安 710072 |
| |
| 基金项目： | 国家自然科学基金，航空科学基金 |
| |
| 摘 要： | 本文考察具有弹性壁面的矩形封闭空间中壁板振动模态与空间声模态的耦合特性。采用有限带宽声功率流法研究了壁板的声辐射功率中声-振耦合所作的贡献,给出了内模态耦合系数的计算公式和模态耦合因子的计算公式。研究表明:壁板结构的辐射声功率不仅与外场声场声压、壁板本身的固有特性有关,而且与壁板和内声空间的耦合特性密切相关。
|
| 关 键 词： | 声功率流 结构振动模态 声模态 |
Analysis of Coupling Characteristics between Vibrational and Acoustical Modes |
| |
| Dai Yang Chen Zao Sun Jincai.Analysis of Coupling Characteristics between Vibrational and Acoustical Modes[J].Journal of Vibration Engineering,1992,5(2):98-104. |
| |
| Authors: | Dai Yang Chen Zao Sun Jincai |
| |
| Abstract: | This paper investigates the coupling characteristics between vibrational and acoustical modes in a rectangular enclosure which has one elastic boundary surface, and studies the contribution of acoustical-vibra-tional coupling to acoustic power radiated by the panel utilizing the band-limited power flow method. The calculating formulas of the joint intermodal coefficient and the modal coupling factor are given in this paper. It is shown that the acoustic power radiated by panel structure depends on not only exterior sound field and natural characteristics of panel* but also modal coupling characteristics between acoustic cavity and panel structure. |
| |
| Keywords: | acoustic power flow vibrational mode acoustical mode intermodal coupling coefficient intermodal coupling factor between structure and cavity |
| 本文献已被 CNKI 维普 等数据库收录！ |
