[1]宋沨,李威.水下复合材料舵的声散射特性仿真研究[J].应用科技,2018,45(05):10-15.[doi:10.11991/yykj.201802003]
 SONG Feng,LI Wei.Simulation study on acoustic scattering characteristics of underwater composite rudder[J].Applied science and technology,2018,45(05):10-15.[doi:10.11991/yykj.201802003]
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水下复合材料舵的声散射特性仿真研究(/HTML)
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《应用科技》[ISSN:1009-671X/CN:23-1191/U]

卷:
第45卷
期数:
2018年05期
页码:
10-15
栏目:
船舶与海洋工程
出版日期:
2018-09-15

文章信息/Info

Title:
Simulation study on acoustic scattering characteristics of underwater composite rudder
作者:
宋沨1 李威12
1. 华中科技大学 船舶与海洋工程学院, 湖北 武汉 430074;
2. 高新船舶与深海开发装备协同创新中心, 上海 200240
Author(s):
SONG Feng1 LI Wei12
1. School of Naval Architecture and Ocean Engineering, Huazhong University of Science and Technology, Wuhan 430074, China;
2. Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration(CISSE), Shanghai 200240, China
关键词:
有限元法自动匹配层技术声散射舵结构复合材料声压目标强度散射回波
Keywords:
finite element methodautomatically matched layer techniqueacoustic scatteringrudder structurecomposite materialsacoustic pressuretarget strengthscattering echo
分类号:
O427.2;O427.9
DOI:
10.11991/yykj.201802003
文献标志码:
A
摘要:
为了研究复合材料对舵结构的声散射特性的影响,采用结合自动匹配层技术的声学有限元法,利用LMS Virtual Lab声学计算软件,以钢质舵模型为原始参照,对水下复合材料舵结构的声散射特性进行求解及对比分析。计算内容为2种舵结构模型的正横目标强度、不同角度入射时的近场散射声压以及水平面内周向的声散射目标强度指向性。结果表明,在中高频段内复合材料对目标强度的降低作用十分明显,并且其指向性目标强度数值也在大部分角度上低于钢质舵;另外,复合材料舵容易使声波透过并在入射前向形成强散射区,而钢质舵则更多的是背向的散射回波。
Abstract:
In order to investigate the influence of composite material on acoustic scattering characteristics of rudder structure, apply the acoustic finite element method that combines automatically matched layer technique, as well as the acoustic computation software LMS Virtual Lab, and take the steel rudder model as the original reference to solve the acoustic scattering of the composite rudder and make a comparative analysis of it. The computation includes the abeam target strength, near-field scattering pressure for different incident angles and the directivity patterns of circumferential acoustic scattering target strength (TS) of two rudder models on horizontal plane. The results indicate that the TS of composite rudder is obviously lower than that of steel one in middle-high frequency, and the magnitude of directivity patterns of composite rudder is also lower in most directions. In addition, the strong scattering field occurs on the back of composite rudder but the steel model shows strong echo.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2018-02-06。
基金项目:国家自然科学基金项目(51579112)
作者简介:宋沨(1994-),男,硕士研究生;李威(1975-),男,教授,博士
通讯作者:李威,E-mail:hustliw@hust.edu.cn
更新日期/Last Update: 2018-09-04