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深吃水半潜式平台垂荡响应数值分析

DOI: doi:10.3969/j.issn.1006-7043.2011.05.009

Keywords: 深吃水半潜式平台, 粘滞阻尼, 垂荡RAO, 垂荡极值

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Abstract:

为优化半潜式平台的垂荡性能,以DPS 2001??4深吃水半潜式平台半潜式平台为例,在频率内采用粘滞阻尼线性化方法,通过数值迭代计算得到了该平台的垂荡响应幅值算子(RAO).根据得到的垂荡RAO,分析了垂荡板对平台垂荡响应的影响,并进一步求得了平台在墨西哥湾、西非和中国南海海域百年一遇海况下的垂荡响应极值.计算结果表明:垂荡板系统对平台的垂荡响应有着很好的抑制作用,但随着垂荡板放置水深的增加,平台在各海况下的垂荡响应极值逐渐变小,当水深超过100 m后,垂荡响应极值将逐渐趋于恒定.

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