The very large floating structure (vlfs) deployed near seashore, islands and reefs are always exposed to the extremely complex encountering waves. Traditional methods with homogeneous wave inputs are not applicable fo...
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The very large floating structure (vlfs) deployed near seashore, islands and reefs are always exposed to the extremely complex encountering waves. Traditional methods with homogeneous wave inputs are not applicable for the hydroelastic analysis of this type vlfs. In this paper, the authors carry out a numerical and experimental investigation on hydroelastic responses of an 8-module vlfs near a typical island. A direct coupling analysis method is established on the basis of the Boussinesq equation and RANKINE source method. The detailed theoretical derivation, numerical method and relevant calculation program THAFTS-BR are presented. Wave propagation near the island, motions and connector loads of the vlfs deployed a typical island are investigated based on the numerical method and model tests. Several useful conclusions are obtained, which can provide a reference for the analysis of dynamic responses, design and construction of the floating structures near islands and seashores.
For the very large floating structure (vlfs) which is deployed near seashores, islands and reefs, the encounter wave conditions are always extremely complex. Traditional methods using homogeneous wave environment cond...
详细信息
For the very large floating structure (vlfs) which is deployed near seashores, islands and reefs, the encounter wave conditions are always extremely complex. Traditional methods using homogeneous wave environment conditions cannot be applied for the analysis. In order to provide references for the further development of numerical methods, this paper reports an experimental study on responses of an 8-module vlfs under three different encounter wave conditions. The wave heights, accelerations, motions and connector loads of vlfs in three test schemes are obtained and analyzed. The comparative results show that the inhomogeneous wave conditions have an essential influence on the responses of vlfs. Especially for the connector loads, the values in the inhomogeneous wave conditions increase a lot compared with the other two test schemes. It indicates the traditional numerical methods using homogeneous wave field may not guarantee a safe design of vlfs and its connectors in the complicated wave environments.
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