基于方向谱的船舶摇荡运动仿真系统研究

船舶摇荡运动数据对于船舶设计与航行安全性分析十分重要,船舶模型在不同海况下的摇荡仿真可指导工程师优化船舶设计。构建了一种基于方向谱的船舶摇荡仿真方法。该方法采用方向谱描述海浪,由切片法获得船舶的响应振幅算子(RAO),基于线性假设和叠加原理采用频谱分析法计算获得船舶摇荡运动频域解和时域解。基于DIRECTX和VC++建立了船舶摇荡运动仿真系统,能仿真工作于不同风浪环境下的船舶摇荡运动响应,仿真结果与实测结果的频谱特征一致,并实现了船舶摇荡运动的仿真结果可视化,可综合反映船舶的航行状态。

Study on Vessel Swaying Motion Simulation System Based on Direction Spectrum

Vessel swaying motion data are very important to ship design and navigation safety analysis,and vessel swaying motion simulation results under different sea-conditions could provide guidance for engineer to optimize vessel design. A method of vessel swaying motion simulation based on directional spectrum was constructed. In this method,ocean waves were described by directional spectrum,response amplitude operators (RAO) of vessels were obtained by strip theory,and based on linear assumption and superpositio...