| 基于正交球面波源边界点法的声学灵敏度分析 |
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| 引用本文： | 张永斌,毕传兴,陈剑,陈心昭.基于正交球面波源边界点法的声学灵敏度分析[J].机械工程学报,2007,43(2):33-38. |
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| 作者姓名： | 张永斌 毕传兴 陈剑 陈心昭 |
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| 作者单位： | 合肥工业大学噪声振动工程研究所,合肥,230009 |
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| 基金项目： | 国家自然科学基金
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安徽省自然科学基金 |
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| 摘 要： | 提出采用正交球面波源边界点法作为声学灵敏度算法,计算空间任意点的声学量关于设计变量的灵敏度,克服基于边界元的声灵敏度分析中所固有的各阶奇异积分和非唯一性问题,降低数值处理难度和工作量.提出近场声全息与声学灵敏度的组合分析方法,利用声全息重建出表面法向振速及其导数,然后再进行灵敏度分析,解决表面声学量获取困难的问题.数值仿真的结果充分证明该声学灵敏度分析方法的正确性和可行性.
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| 关 键 词： | 声灵敏度 边界点 球面波 近场声全息 正交 面波源 边界点法 声学灵敏度 敏度分析 METHOD BOUNDARY POINT SOURCE SPHERICAL WAVE ORTHOGONAL BASED SENSITIVITY ANALYSIS SHAPE 组合分析方法 结果 数值仿真 非唯一性问题 表面法 导数 振速 |
| 修稿时间： | 2006年2月27日 |
ACOUSTIC SHAPE SENSITIVITY ANALYSIS BASED ON ORTHOGONAL SPHERICAL WAVE SOURCE BOUNDARY POINT METHOD |
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| ZHANG Yongbin,BI Chuanxing,CHEN Jian,CHEN Xinzhao.ACOUSTIC SHAPE SENSITIVITY ANALYSIS BASED ON ORTHOGONAL SPHERICAL WAVE SOURCE BOUNDARY POINT METHOD[J].Chinese Journal of Mechanical Engineering,2007,43(2):33-38. |
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| Authors: | ZHANG Yongbin BI Chuanxing CHEN Jian CHEN Xinzhao |
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| Abstract: | The orthogonal spherical wave source boundary point is proposed to the acoustic shape sensitivity of any point in an acoustic field. In the method, the problems of the non-uniqueness and singularity caused by using the boundary element method are avoided, and the numerical calculation becomes easier. Furthermore, the nearfield acoustic holography is used to reconstruct the surface normal velocity and its difference on the source surface in the acoustic shape sensitivity analysis, which avoids the straightforward calculation of those acoustic qualities. The numerical simulations on some typical sources validate the feasibility and correctness of the proposed method. |
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| Keywords: | Acoustic shape sensitivity Boundary point Spherical wave Nearfield acoustic holography |
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