[1]刘成武、郭小斌.薄板结构振动声辐射特性分析及优化[J].福建工程学院学报,2020,18(04):375-380.[doi:10.3969/j.issn.1672-4348.2020.04.013]
　LIU Chengwu,GUO Xiaobin.Analysis and optimization of vibration acoustic radiation characteristics 〖JZ〗of thin plate structure[J].Journal of FuJian University of Technology,2020,18(04):375-380.[doi:10.3969/j.issn.1672-4348.2020.04.013]
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薄板结构振动声辐射特性分析及优化()
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《福建工程学院学报》[ISSN:2097-3853/CN:35-1351/Z]

卷:
第18卷
期数:
2020年04期
页码:
375-380
栏目:
出版日期:
2020-08-25

文章信息/Info

Title:
Analysis and optimization of vibration acoustic radiation characteristics 〖JZ〗of thin plate structure
作者:
刘成武、郭小斌
福建工程学院机械与汽车工程学院
Author(s):
LIU Chengwu;  GUO Xiaobin
School of Mechanical and Automotive Engineering
关键词:
薄板; 振动声辐射; 辐射声功率; 辐射效率
Keywords:
thin plates;  vibration acoustic radiation;  acoustic radiation power;  radiation efficiency
分类号:
TB532
DOI:
10.3969/j.issn.1672-4348.2020.04.013
文献标志码:
A
摘要:
利用有限元法与边界元法结合对薄板进行振动声辐射特性分析，研究了薄板结构在简谐力作用下表面声压分布状况，分析了不同边界条件、材料以及加筋形式等因素对薄板结构振动声辐射特性的影响，并对简支矩形薄板厚度进行了优化。研究表明，边界约束的增加会导致薄板刚度变大，进而导致薄板辐射声功率与辐射效率随之改变?不同材料对结构的辐射声功率均有影响，而对辐射效率影响很小?加筋对薄板声辐射特性影响显著，十字型加筋形式减震降噪效果最好?对薄板厚度进行优化，优化后薄板辐射声功率级下降了4.29dB。
Abstract:
Finite element method combined with the boundary element method was employed to analyze the vibration and acoustic radiation characteristics of the thin plate. The distribution of acoustic pressure on the surface of a thin plate structure subjected to harmonic force was studied. The influence of such factors as different boundary conditions, materials and stiffened types on the vibration acoustic radiation characteristics of thin plate structure was analyzed, and the thickness of the simply-supported rectangular plate was optimized. Results show that the stiffness of the thin plate increases with an increasing boundary constraint, which further affects the radiation power and radiation efficiency accordingly. Different materials can affect the radiation sound power of the structure; however, they have little influence on the radiation efficiency. The stiffening has a significant effect on the acoustic radiation characteristics of the thin plate, and the cross-stiffened plates have been proven to be the best shock and noise absorbers. After the optimization of the thickness of the plate, the level of the radiated sound power is decreased by 4.29 dB.

参考文献/References:

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相似文献/References:

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更新日期/Last Update: 2020-08-25