| 敷设阻尼有限板在半空间中声散射的试验研究 |
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| 引用本文： | 姜琳,洪明. 敷设阻尼有限板在半空间中声散射的试验研究[J]. 船舶力学, 2010, 14(9): 1065-1070. DOI: 10.3969/j.issn.1007-7294.2010.09.012 |
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| 作者姓名： | 姜琳 洪明 |
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| 作者单位： | 大连理工大学工业装备结构分析国家重点实验室运载工程与力学学部船舶工程学院,辽宁大连,116024;大连理工大学工业装备结构分析国家重点实验室运载工程与力学学部船舶工程学院,辽宁大连,116024 |
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| 基金项目： | the National Natural Science Foundation China |
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| 摘 要： | 以敷设阻尼的铝板为研究对象,利用声学测量系统,考察了在声束作用下敷设阻尼铝板的声散射特性.试验结果表明:近场障板的声散射特点是声源距离障板越近插入损失越大,敷设阻尼障板的插入损失要比无阻尼障板的大.阻尼层面向声源时的隔声效果优于阻尼层背离声源.远场测量结果表明障板在远场的指向性不明显,趋于均匀分布.
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| 关 键 词： | 阻尼板 声散射 试验 |
Studies on Acoustic Scattering Experiment of Finite Plate in Half Space |
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| JIANG Lin,HONG Ming. Studies on Acoustic Scattering Experiment of Finite Plate in Half Space[J]. Journal of Ship Mechanics, 2010, 14(9): 1065-1070. DOI: 10.3969/j.issn.1007-7294.2010.09.012 |
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| Authors: | JIANG Lin HONG Ming |
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| Abstract: | The correlation acoustic scattering experiment of finite plate was investigated in this paper by using advanced acoustical experiment system. Experiment results show that the insertion loss in-creases greatly as the distance between sound source and finite plate becomes closer and it is not sensitive to the thickness of the plate. The insertion loss made by the damping plate is higher than that made by non-damping plate and the effect of sound insulation made by damping layer faing with source is better than damping layer deviating from source. It is indicated that the sound field direc-tivity of pattern of the finite plate distributes symmetrically in the far field. |
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| Keywords: | finite plate acoustic scattering insertion loss experiment |
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