考虑颤振效应的超大型集装箱船极限强度  

The Ultimate Strength of Ultra Large Container Ships Based on Whipping Effect

作　　者：李丹丹[1] 彭亚康 王伟飞 张志康 陈磊[1] LI Dandan;PENG Yakang;WANG Weifei;ZHANG Zhikang;CHEN Lei(Marine Design and Research Institute of China,Shanghai 200011,China)

机构地区：[1]中国船舶及海洋工程设计研究院

出　　处：《船舶工程》2019年第11期29-33,104,共6页Ship Engineering

摘　　要：砰击颤振会威胁船体的总纵强度。依据海况对响应贡献率最大的原则确定计算海况,而后计算得出某超大型集装箱船的波浪载荷时历,并采用Weibull、Gumbel及GEV分布拟合得到载荷短期极值沿船长的分布且校核目标船的极限强度。将短期极值Weibull、Gumbel分布拟合的结果与载荷的规范计算结果进行对比,研究表明,有必要在考虑砰击颤振效应的工况下,利用波浪载荷直接预报结果校核目标船的结构强度,为后续研究提供参考。The whipping caused by the slamming make the longitudinal strength of the hull dangerous. According to the principle, the calculation sea states are determined that sea states are most contributive to the extreme response. Then, the wave load of an ultra-large container ship is calculated. The Weibull distribution, Gumbel distribution and the GEV distribution are used to fit the wave load and obtain the distribution of short-term extreme values along the length of the ship. The ultimate strength of the target ship is checked by comparing the short-term extreme value with the ultimate capacity of the hull girder. Comparing the results of the short-term extremum calculated by Weibull and Gumbel distribution with the rule’s results of the load, the result shows that it is necessary to check the structural strength of the target ship by using the direct prediction result of the wave load under consideration of the whipping effect.

关 键 词：超大型集装箱船 颤振 极限强度 WEIBULL分布 Gumbel分布 GEV分布 

分 类 号：U661.44[交通运输工程—船舶及航道工程] U67.131[交通运输工程—船舶与海洋工程]