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>> 双周期加筋微穿孔板的振动响应及声透射的研究
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双周期加筋微穿孔板的振动响应及声透射的研究
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Release time:2019-03-10
Title of Paper:
双周期加筋微穿孔板的振动响应及声透射的研究
Indexed by:
期刊论文
Date of Publication:
2012-08-15
Journal:
固体力学学报
Included Journals:
PKU、ISTIC、CSCD、EI、Scopus
Volume:
33
Issue:
4
Page Number:
415-422
ISSN No.:
0254-7805
Key Words:
微穿孔板;振动响应;声透射;空间波数;周期筋
Abstract:
论文主要研究了水下无穷大双周期加筋微穿孔薄板,在平面声波斜入射下的振动响应和声透射,并提出了一种半解析半数值的计算方法.利用微穿孔板的声阻抗以及薄板表面的振速边界条件,建立了加筋穿孔薄板的振动方程,并根据傅立叶变换及空间波数法将振动位移表达为波数分量的迭加形式.采用数值计算的方法对波数分量进行求解并通过傅里叶逆变换,最终得到了双周期加筋穿孔薄板的振动响应及透射系数.通过与Taka hashi穿孔板声压结果的对比,证明了该方法的正确性.在算例中,分析了加强筋及穿孔率对薄板结构的振动和声透射的影响.
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流固耦合的周期加强板的振动及声辐射研究