| FPSO底部砰击运动与荷载预报 |
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| 引用本文： | 王言英,汪鸿.FPSO底部砰击运动与荷载预报[J].大连理工大学学报,2009,49(1):82-87. |
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| 作者姓名： | 王言英 汪鸿 |
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| 作者单位： | 大连理工大学船舶工程学院,辽宁大连,116024 |
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| 基金项目： | “八六三”国家高技术研究发展计划资助项目(2006AA09A104) |
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| 摘 要： | 提出了一种适用于FPSO底部砰击运动与荷载的计算方法.用频时转换将以Green函数法计算得到的运动谱变换到时域中,实现底部砰击发生的预测;根据经验公式法,实现底部砰击荷载的预报.计算中考虑了波浪与船的遭遇相位角和不同设计波周期对底部砰击荷载的影响.该方法可方便地用于预报FPSO在其工作海域环境条件下的首底砰击荷载及其发生的频率,其计算结果可作为砰击导致的FPSO底部板壳疲劳分析的输入,也同样适用于不同浪向角和不同装载状态下砰击荷载预测的计算.
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| 关 键 词： | Green函数法 频时转换 船舶运动 底部砰击 砰击荷载 |
Prediction of bottom slamming motion and loads for FPSO |
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| WANG Yanying,WANG Hong.Prediction of bottom slamming motion and loads for FPSO[J].Journal of Dalian University of Technology,2009,49(1):82-87. |
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| Authors: | WANG Yanying WANG Hong |
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| Institution: | WANG Yan-ying,WANG Hong Department of Naval Architecture,Dalian University of Technology,Dalian 116024,China |
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| Abstract: | A computational procedure of predicting bottom slamming motion and loads for FPSO is presented.The approach of transition of frequency-time domain is used to determine the occurrence of slamming and the impact loads on hull-bottom for FPSO in which ship hull motions in waves are calculated by using the three-dimensional Green function method and the wave slamming pressure is determined by means of the empirical formula.The effect of the encountered phase-angle between ship hull and incident wave and of desi... |
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| Keywords: | Green function approach transition of frequency-time domain ship motion bottom slamming slamming loads |
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