大型漂浮装置非线性横摇特性研究

Research on the nonlinear rolling characteristics of a large floating facility

本文利用大型漂浮装置作为船载系统设备的横摇试验平台,通过建立和分析含非线性阻尼、恢复力矩及外部驱动作用的非线性横摇运动模型,获得了装置在较大幅角和周期范围内的非线性横摇运动特性及施加的外部驱动作用规律,结果还表明阻尼作用下平台存在加减速行程时间差,增大幅角、减小周期均显著增加阻尼及驱动功率,而调高横稳心高可降低驱动功率。本文研究可为漂浮装置运行及设备试验提供依据。

The paper adopted a large floating facility as the rolling test platform of shipborne systems and equipments.By fouding and analyzing the nonlinear rolling motion model with nonlinear damping, restoring and driving moment, the paper obtained the nonlinear rolling characteristics of the facility in a wide range of the amplitude and the cycle, and the characteristics of driving power. The results showed that stroke time differences existed between the acceleration and deceleration stroke, the increase of amplitude and the decrease of cycle both led to the increase of the damping and driving power, while the increase of meta-centric height led to the decrease of the driving power. The study would provide some instructions for the operation of floating facility and the shipborne equipments tests.