浮式塔的动力计算
Dynamics of a floating tower
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摘要: 采用频域二阶摄动法研究了浮式塔在给定环境条件下的动力响应.计算了浮式塔在不规则波上的一阶运动响应函数和运动谱以及张力谱,同时进行了相应的模型试验.由结果的比较可以看出,试验结果与理论方法计算得到的结果吻合较好.计算结果表明,波浪的二阶作用对浮式塔的低频纵荡有影响.计算结果与试验结果的比较说明频域二阶摄动法可以用于浮式塔的动力分析.Abstract: The perturbation method is applied to investigate the dynamics of a floating tower under irregular waves in the frequency domain.Ratio amplitude operator and spectra of surge and tension of the floating tower are calculated.At the same time the corresponding model tests are carried out in the State Key Laboratory of Ocean Engineering,Shanghai Jiaotong University.From the comparison,it can be found that the calculated results agree well with the test results.The results show that the second-order wave force has an effect on the slow oscillation of the floating tower in surge direction.The perturbation method can be used to analyze the dynamics of a floating tower.
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Key words:
- floating tower /
- motion response /
- perturbation method /
- model test
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