海洋平台离散模型振动控制研究

对近海平台离散结构模型在特征波浪载荷下，以平台上甲板最小位移为目标，比较了单个及多个调谐阻尼器（TMD）对系统各阶模态的抑振效果，结果表明，安装在第一模态质量上的调谐阻尼器对系统各阶模态振动的抑制作用最大；获得了海洋平台离散模型振动控制阻尼器的设计优化参数，为工程阻尼器设计提供了依据。

STUDY ON VIBRATION CONTROL FOR A DISCRETE MODEL OF AN OFFSHORE OIL PLATFORM

This study investigates a discrete model of an offshore oil platform with tuned mass dampers (TMD) by using time-history analysis. The performance of a signal TMD and TMDs for different modes is studied. In design conditions (with mass ratio of 2%, significant wave frequency of 12, significant wave height of 10 m), the optimized TMD parameters to minimize the response to displacement of deck motion were obtained. The results show that the optimized TMD parameters results in reductions in response to all modal displacements. Of all methods to set TMDs, the effect of a signal TMD on the first modal mass is the best, and the less damping of TMD, the better effects of vibration control.