| 海上自升式平台动力分析方法研究(英文) |
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| 引用本文： | 于昊,李晓宇,杨曙光.海上自升式平台动力分析方法研究(英文)[J].船舶与海洋工程学报,2012,11(1):111-118. |
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| 作者姓名： | 于昊 李晓宇 杨曙光 |
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| 作者单位： | College of Shipbuilding Engineering,Harbin Engineering University;Research Center,American Bureau of Shipping |
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| 基金项目： | Supported by the National Natural Science Foundation of China (Grant No.51079034);Fundamental Research Funds for the Central Universities (Grant No. HEUCFR1003) |
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| 摘 要： | A jack-up platform,with its particular structure,showed obvious dynamic characteristics under complex environmental loads in extreme conditions.In this paper,taking a simplified 3-D finite element dynamic model in extreme storm conditions as research object,a transient dynamic analysis method was proposed,which was under both regular and irregular wave loads.The steps of dynamic analysis under extreme conditions were illustrated with an applied case,and the dynamic amplification factor(DAF) was calculated for each response parameter of base shear,overturning moment and hull sway.Finally,the structural response results of dynamic and static were compared and analyzed.The results indicated that the static strength analysis of the Jack-up Platforms was not enough under the dynamic loads including wave and current,further dynamic response analysis considering both computational efficiency and accuracy was necessary.
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| 关 键 词： | jack-up platforms wave loads dynamic analysis dynamic amplification factor |
Dynamic analysis method of offshore jack-up platforms in regular and random waves |
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| Hao Yu,Xiaoyu Li,Shuguang Yang.Dynamic analysis method of offshore jack-up platforms in regular and random waves[J].Journal of Marine Science and Application,2012,11(1):111-118. |
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| Authors: | Hao Yu Xiaoyu Li Shuguang Yang |
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| Institution: | 1.College of Shipbuilding Engineering,Harbin Engineering University,Harbin 150001,China 2.Research Center,American Bureau of Shipping,Houston TX 77060,USA |
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| Abstract: | A jack-up platform, with its particular structure, showed obvious dynamic characteristics under complex environmental loads
in extreme conditions. In this paper, taking a simplified 3-D finite element dynamic model in extreme storm conditions as
research object, a transient dynamic analysis method was proposed, which was under both regular and irregular wave loads.
The steps of dynamic analysis under extreme conditions were illustrated with an applied case, and the dynamic amplification
factor (DAF) was calculated for each response parameter of base shear, overturning moment and hull sway. Finally, the structural
response results of dynamic and static were compared and analyzed. The results indicated that the static strength analysis
of the Jack-up Platforms was not enough under the dynamic loads including wave and current, further dynamic response analysis
considering both computational efficiency and accuracy was necessary. |
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| Keywords: | jack-up platforms wave loads dynamic analysis dynamic amplification factor |
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