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>> 流固耦合的周期加强板的振动及声辐射研究
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流固耦合的周期加强板的振动及声辐射研究
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Release time:2019-03-11
Title of Paper:
流固耦合的周期加强板的振动及声辐射研究
Indexed by:
期刊论文
Date of Publication:
2012-01-01
Journal:
力学学报
Included Journals:
Scopus、EI、PKU、ISTIC、CSCD
Volume:
44
Issue:
2
Page Number:
287-296
ISSN No.:
0459-1879
Key Words:
加强板; 振动响应; 有限元法; 周期结构; 空间波数法
Abstract:
研究了流体负载下的无穷大双周期加强板,在周期谐振力作用下的振动响应和声辐射,并提出了一种基于有限元和空间波数法的半解析半数值方法.首先利用有限元
的方法对周期结构进行单元离散,并将结构对薄板的作用力等效为节点力的作用.然后通过周期结构的振动方程,结合薄板与结构的位移边界条件,建立了节点力与
薄板节点位移的函数方程.最后应用空间波数法和傅里叶变换,并采用数值计算的方法求解出薄板的节点位移,得到了周期加强板关于离散节点位移的振动和辐射声
压方程.在数值算例中,对该方法的正确性进行了验证,并且分析了周期结构对薄板的振动和声辐射的影响.
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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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Using Floquet-Bloch Theory to Research Vibration Characteristics of Composite Material with Trusslike Periodic Micro-structures