| 弹性空腔的有限带宽渐近模态分析 |
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| 引用本文： | 戴林钧,谌刚,杨叔子. 弹性空腔的有限带宽渐近模态分析[J]. 华中科技大学学报(自然科学版), 1991, 0(Z2) |
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| 作者姓名： | 戴林钧 谌刚 杨叔子 |
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| 作者单位： | 华中理工大学机械工程一系(戴林钧，谌刚)，华中理工大学机械工程一系(杨叔子) |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 本文根据渐近模态分析的思想,引入在有限带宽内进行频率积分的概念,发展成有限带宽渐近模态分析.利用波动方程和结构运动方程,给出结构-声耦合的任意形状弹性空腔声压的基本解,该解由结构和声腔模态的线性组合形式表示,然后按有限带宽渐进模态分析方法,导出了实用的弹性空腔高频噪声预估公式.
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| 关 键 词： | 噪声 振动 弹性空腔 模态分析 有限带宽 |
A Band-Limited Asymptotic Modal Analysis for Elastic Cavity |
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| Dai Linjun Sheng Gang Yang Shuzi. A Band-Limited Asymptotic Modal Analysis for Elastic Cavity[J]. JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE, 1991, 0(Z2) |
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| Authors: | Dai Linjun Sheng Gang Yang Shuzi |
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| Affiliation: | Dai Linjun Sheng Gang Yang Shuzi |
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| Abstract: | An acoustic wave equation and structural motion equations are used to find a fundamental solution for the sound pressure of an acoustic-structure coupling of elastic cavity of arbitrary shape. By employing the concept of band-limited analysis, an asymptotic modal analysis is extended to band-limited asymptotic modal analysis which is applied to deriving a high-frequency noise prediction formula for an elastic cavity. |
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| Keywords: | Noise Vibration Elastic Cavity Modal analysis Band-limited |
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