| 舰船隔振装置技术及其进展 |
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| 引用本文： | 吴崇建, 王春旭, 陈志刚, 杜堃, 雷智洋. 螺旋桨低频振动声辐射特性研究——水母模态[J]. 中国舰船研究, 2020, 15(3): 75-80. DOI: 10.19693/j.issn.1673-3185.01960 |
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| 作者姓名： | 吴崇建 王春旭 陈志刚 杜堃 雷智洋 |
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| 作者单位： | 1.中国舰船研究设计中心, 湖北 武汉 430064;2.船舶振动噪声重点实验室, 湖北 武汉 430064 |
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| 基金项目： | 装备发展部专项预研基金资助项目（1501JZJZ0304） |
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| 摘 要： | 
目的 发现了一种螺旋桨噪声新成分——螺旋桨低频弹性被激发而形成的声辐射，特别是桨叶同相模态被激发引起的强烈声辐射，我们称之为
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| 关 键 词： | 螺旋桨噪声 水母模态 循环对称结构 单频模态 重频模态 失谐 |
| 收稿时间： | 2020-05-11 |
| 修稿时间： | 2020-05-11 |
Naval vessel machinery mounting technology and its recent advances |
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| WU Chongjian, WANG Chunxu, CHEN Zhigang, DU Kun, LEI Zhiyang. The analysis of a propeller's low-frequency vibration and sound radiation characteristics: Jellyfish mode[J]. Chinese Journal of Ship Research, 2020, 15(3): 75-80. DOI: 10.19693/j.issn.1673-3185.01960 |
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| Authors: | WU Chongjian WANG Chunxu CHEN Zhigang DU Kun LEI Zhiyang |
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| Affiliation: | 1.China Ship Development and Design Center, Wuhan 430064, China;2.National Key Laboratory on Ship Vibration and Noise, Wuhan 430064, China |
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| Abstract: |
Objectives We found a new component of propeller noises which is induced by the excitation of the low-frequency elastic mode of the propeller.
In particular, the model where all the blades of a propeller vibrate in the same phase is stimulated will result in strong acoustic radiation. We have named the mode shape in which all the blades of a propeller vibrate in the same phase as
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| Keywords: | propeller noise Jellyfish mode cyclic symmetry structure single frequency mode repetition frequency mode structural detuning |
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