深水顶张力立管涡激振动疲劳损伤分析

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根据流场分布及结构参数,应用涡激振动预报程序shear7计算顶张力立管(TTR)涡激振动的疲劳损伤,分别讨论顶张力变化对于疲劳损伤的影响,同时改进程序截止值参数及模型边界条件,研究其对立管疲劳损伤的影响。结果显示,顶张力增大,增加了疲劳寿命。参数截止值的减小,可以使结果更符合实际情况。改变边界条件,立管动力特性有相应的变化,对于疲劳损伤的影响也很明显。
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