陵水半潜式生产平台研究专项(编号：LSZX-2020-HN-02), 中国海洋石油集团有限公司科技项目(项目编号: CNOOC-KJ 135 GJJS 07 GC 2020-02)
1.Harbin Engineering University;2.Offshore Oil Engineering CO.LTD
At present, numerical simulation has been widely used in the field of ocean engineering and can provide reference for practical engineering operations. In this paper, the newly delivered Lingshui 17-2 semi-submersible platform is taken as the research object. In order to study its free decay motion response characteristics, the kinematics numerical simulation model of the semi-submersible platform is established, and the free decay motion of the semi-submersible platform with different degrees of freedom is simulated. In order to ensure the reliability of the numerical simulation model, the scale ratio model test method was used to check the simulation model, and the simulation results of free attenuation motion response under given initial conditions were compared with the model experiment results, which were basically consistent. Based on the free decay curve, calculating the damping coefficient of the semi-submersible platform and numerically analyzing the damping force (moment) time history curve. The results prove that the offshore operation simulation of Lingshui 17-2 platform could be carried out based on the simulation model.