| Time Domain Simulation of Transient Responses of Very Large Floating Structures Under Unsteady External Loads |
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| 作者姓名： | 邱流潮 刘桦 |
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| 作者单位： | School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai 200030, China |
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| 基金项目： | This work was financially supported by the National Natural Science Foundation of China （Grant No. 10172058） and the China Postdoctoral Science Foundation （Grant No. 2005037260） |
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| 摘 要： | A time domain finite element method （FEM） for the analysis of transient elastic response of a very large floating structure （VLFS） subjected to arbitrary time-dependent external loads is presented. This method is developed directly in time domain and the hydrodynamic problem is formulated based on linear, inviscid and slightly compressible fluid theory and the structural response is analyzed on the thin plate assumption. The time domain finite element procedure herein is validated by comparing numerical results with available experimental data. Finally, the transient elastic response of a pontoon-type VLFS under the landing of an airplane is computed by the proposed time domain FEM. The time histories of the applied force and the position and velocity of an airplane during landing are modeled with data from a Boeing 747-400 jumbo jet.
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| 关 键 词： | FEM VLFS 海岸线 防浪堤 长波理论 有限元分析 超大型浮体 |
Time Domain Simulation of Transient Responses of Very Large Floating Structures Under Unsteady External Loads |
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| QIU Liu-chao, LIU Hua.Time Domain Simulation of Transient Responses of Very Large Floating Structures Under Unsteady External Loads[J].China Ocean Engineering,2005,19(3):365-374. |
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| Authors: | QIU Liu-chao LIU Hua |
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| Abstract: | A time domain finite element method (FEM) for the analysis of transient elastic response of a very large floating structure (VLFS) subjected to arbitrary time-dependent external loads is presented. This method is developed directly in time domain and the hydrodynamic problem is formulated based on linear, inviscid and slightly compressible fluid theory and the structural response is analyzed on the thin plate assumption. The time domain finite element procedure herein is validated by comparing numerical results with available experimental data. Finally, the transient elastic response of a pontoon-type VLFS under the landing of an airplane is computed by the proposed time domain FEM. The time histories of the applied force and the position and velocity of an airplane during landing are modeled with data from a Boeing 747-400 jumbo jet. |
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| Keywords: | very large floating structure (VLFS) hydroelastic response transient analysis time domain landing finite element method (FEM) |
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