| 半无限域中结构体辐射声场计算 |
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| 引用本文： | 汪鸿振,冯革楠. 半无限域中结构体辐射声场计算[J]. 声学技术, 1996, 15(2): 54-56,63 |
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| 作者姓名： | 汪鸿振 冯革楠 |
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| 作者单位： | 上海交通大学振动、冲击、噪声研究所!200030 |
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| 摘 要： | 本文从无限域Ｈｅｌｍｈｏｌｔｚ积分方程入手，用边界元法（ＢＥＭ）计算任意形状结构体辐射声场，对用ＢＥＭ计算声场出现的奇异积分，特征频率，边角点处向不连续，高频段计算误差较大等问题进行了有效，简便的处理，并用理论算例验证了这些方法有较精度。
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| 关 键 词： | 半无限域 辐射声场 结构体 |
| 收稿时间： | 1995-11-09 |
Calculation of structural radiation sound field in a semi-infinite region |
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| WANG Hongzhen and FENG Genan. Calculation of structural radiation sound field in a semi-infinite region[J]. Technical Acoustics, 1996, 15(2): 54-56,63 |
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| Authors: | WANG Hongzhen and FENG Genan |
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| Affiliation: | Institute of Vibration, Shock and Noise, Shanghai Jiaotong Unlv 200030;Institute of Vibration, Shock and Noise, Shanghai Jiaotong Unlv 200030 |
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| Abstract: | In this paper, based on the Helmholtz integral equation in a semi-infinite region,the radiated sound field of an arbitrary shaped structure is calculated with Boundary Element Method (BEM). Problems of singular integration, characteristic frequencies, normal noncontinuity at edges and corners, large error in high frequency bands that associated with the using of Boundary Element Method are treated effectively and conveniently. Theoretic numerical calculations are also given to show the high accuracy of these methods. |
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| Keywords: | semi-infinite region radiation sound field |
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