The numerical investigation on the effects of support conditions and flanges during the water impact of a thin elastic plate

Yang Jian; Sun Zhaochen; Liang Shuxiu

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The numerical investigation on the effects of support conditions and flanges during the water impact of a thin elastic plate

机译：The numerical investigation on the effects of support conditions and flanges during the water impact of a thin elastic plate

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The water impact of plates can represent a broad of slamming problems in marine and offshore engineering, such as the wet-deck slamming of a multi-hull vessel, the slamming of the coastal structures like breakwaters, and slamming induced by the sloshing of the LNG ships. This paper has studied the water impact of an elastic plate with/without flanges. The main focus is on the influences of the support conditions and the flanges. For elastic structures, especially thin-walled structures, different support conditions lead to different structural responses. Therefore, it is necessary to investigate the effects of support conditions. The results showed that the stronger the constraint, the higher the vibration frequency of the structure, the greater the force. But the deformation is much smaller. On the other hand, we simulate the water impact of the flat plates with flanges, which is quite different from previous studies in which a rigid plate is considered only. The results of wavelet analysis show that the flanges can reduce the high-frequency components of structure vibration. The amplitudes of the high-frequency components decay over time sharply. Eventually, the responses with a frequency between 40 and 60 Hz remain and are less affected by the flanges. The FSI simulation is carried out with ANSYS commercial software. VOF model is used in the fluid solver, finite element method is used in structure solver, and the partitioned method is used to couple the solvers. Compared with other methods, there is no simplification in the partitioned approach. Therefore, it can reflect the whole slamming process more accurately.

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来源
《Ocean engineering》 |2022年第1期|111284.1-111284.10|共10页
作者
Yang Jian; Sun Zhaochen; Liang Shuxiu;
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作者单位

Dalian Univ Technol, State Key Lab Coastal & Offshore Engn, Dalian 116024, Liaoning, Peoples R China;

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正文语种英语
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Water impact; Hydroelasticity; Flange; Fluid-structure interaction; Elastic plate;

The numerical investigation on the effects of support conditions and flanges during the water impact of a thin elastic plate

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