Hydroelastic vibrations in a rectangular container
Hydroelastic vibrations in a rectangular container
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DOI：
10.1016/0020-7683(81)90001-9
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发表时间：
1981
影响因子：
3.6
通讯作者：
H. Bauer
中科院分区：
文献类型：
--
作者：
H. Bauer
本文研究了矩形容器弹性底部与具有自由液面的液体的相互作用。为此，容器底部被认为是柔性膜或薄的弹性矩形板。此外，还讨论了自由液面被柔性膜或弹性薄板覆盖的刚性矩形容器中液体的水弹性问题。在这两种情况下，结构-液体系统的耦合频率已经获得。有人发现，偶结构模式与奇数液体模式耦合，反之亦然，耦合频率表现出降低幅度相比，非耦合的结构频率和增加幅度相比，非耦合的液体频率。它们随着膜的张力减小或板的刚度减小而减小。
The interaction of an elastic bottom with the liquid exhibiting a free liquid surface has been investigated for a rectangular container. For this reason the container bottom was considered either as a flexible membrane or as a thin elastic rectangular plate. Furthermore the hydroelastic problem of a liquid in a rigid rectangular tank in which the free liquid surface was covered by a flexible membrane or a thin elastic plate has also been treated. In both cases the coupled frequencies of the structure-liquid system has been obtained. It was found that even structural modes couple with odd liquid modes and vice versa and that the coupled frequencies exhibit decreased magnitude compared with the uncoupled structural frequencies and increased magnitude compared to the uncoupled liquid frequencies. They decrease with decreasing tension of the membrane or decreasing stiffness of the plate.