生产驳船多点系泊定位系统动态响应

Dynamic Response of Multi-Point Mooring Positioning System of a Moored Production Barge

导出了多点系泊系统的船舶运动方程,在船舶运动方程中计入了非线性恢复力。缆索分段的三维动态方程中采用了凝集参数模型与平均切向量非线性流体动力载荷处理技术,对某生产驳船系泊问题进行了计算,对受有风、浪、流环境力的系泊船运动方程进行了数值求解,得到了随时间变化的船舶运动和系泊索动态张力,考查了缆索动力学对船舶运动和链张力的影响,并与以前未计入缆索动力影响的准静态结果进行了比较。

Ship motion equations of multi-point mooring system are derived, in which the nonlinear restoring force terms are included. In three-dimensional dynamic response equations of cable-segment a lumped parameter model and average tangential vecter technique are adopted. The mooring calculation of a barge is carried out and numerical solution of the motion equations is given in the environmental force condition of wind, wave and current, the ship movement with time and the dynamic tension of mooring cable are also obtained. The effect of cable dynamics on ship motion and chain tensions are investigated and compared to the quasi-static results in the case without taking the effect of cable dynamic forces into account.