摘要
半潜式平台通过多点系泊的方式被固定于海面的指定区域内,在风、浪、流等环境载荷的联合作用下,做具有一定规律性的耦合运动。文中根据牛顿第二运动定律建立六元二阶运动微分方程组,描述半潜式平台在6自由度方向上的运动,并使用数学模型计算、有限元分析和数值拟合等方法,对方程组中的环境载荷、质量系数、阻尼系数和刚度系数4个未知量做了分析。使用Unity3d建立视景仿真系统,在系统中使用差分法解算平台运动微分方程组,分析平台在6自由度方向的运动规律。
The semi-submersible platform is fixed to the designated area on the sea surface by means of multi-point mooring. Under the joint action of environmental loads such as wind, waves and currents, it has a regular coupling motion. Based on Newton＇s second law of motion, this paper builds the six-order second-order differential equations of motion, describes the movement of semi-submersible platform in the direction of six degrees of freedom. By using mathematical model calculation, finite element analysis and numerical fitting, the four unknowns involving environmental load, mass coefficient, damping coefficient and stiffness coefficient in the system of equations are analyzed. Unity3 d is used to establish the visual simulation system. Differential equations are used in the system to solve the differential equations of the platform. The motion of the platform in the direction of six degrees of freedom is analyzed.
作者
张磊
贾鹏
苏峰
王恒
姚广旭
ZHANG Lei;JIA Peng;SU Feng;WANG Heng;YAO Guangxu(Offshore Oil Engineering Co., Ltd., Tianjin 300451, China;College of Mechanical and Electrical Engineering, Harbin Engineering University, Harbin 150001, China)
出处
《机械工程师》
2018年第5期53-62,共10页
Mechanical Engineer
基金
工信部-海洋工程装备科研项目(Z16SJENK0033
2014BAK02FX010)
中央高校基金(HEUCFP201727)
中央高校基金(HEUCF170703)
关键词
半潜式平台
六元二阶运动微分方程组
数学模型
UNITY3D
视景仿真系统
semi-submersible platform
six-order second-order differential equations of motion
mathematical model
Unity3d
visual simulation system
