摘要
采用瞬时等效运动下的转换矩阵描述船舶绕多轴同时转动的复杂三维运动。考虑船舶瞬时运动时坐标系的瞬时改变,建立了多自由度耦合运动方程。在理论研究的基础上,推导了船舶表面划分网格后网格特征的数值计算公式,利用瞬时坐标转换矩阵判定水下湿表面新网格,从而得到时域波浪力的数值计算公式。开发了迭代计算时域运动响应的计算程序,用于实船在波浪中的多自由度运动计算。以某C11集装箱船为例,计算其在波浪中的时域参数横摇运动,通过相图和频谱图分析船舶参数横摇特性。计算表明,论文基于坐标转换思想提出的多自由度耦合模型以及建立的参数横摇计算方法是可行的。
Parametric roiling is the central issue of complete stability. In this paper, instantaneous equivalent rotation matrix is used to describe the rotation of the ship around three axes. Formula for numerical calculation of grid feature is deduced, which can be used to the underwater part. Then~ formula for riumerical calculation of real-time wave force can be obtained. A procedure of motion in the time domain is compiled, which can calculate motion of MDOF in waves, Taking a Cli container ship as an example, its motion in a variety of waves is Calculated, and motion characteristics are analyzed aceordiiag to the phase diagram or spectrum. Feasibility and convergence of the numerical calculation method in the time domain are verified, and multiple coupling responses are analyzed.
出处
《中国造船》
EI
CSCD
北大核心
2017年第4期46-55,共10页
Shipbuilding of China
基金
国防科工局项目(B2420132001)
