一种基于Taylor展开的系泊刚度矩阵计算方法

A Taylor-expansion-based Calculation Method of Mooring Stiffness Matrix

系泊系统对于船舶及海上浮式结构物的定位十分重要。钢质系泊缆索是业界广泛采用的一种形式。由于其提供的恢复力与浮体位移之间呈现非线性关系,故针对此种系泊方式基于Taylor展开方法得到了非线性的刚度系数及相应的系泊刚度矩阵,研究了其在系泊定位及水动力计算方面的应用。分析表明该方法可以较为方便地计及刚度非线性的影响。

It is very important to station-keeping for ships and floating structures. Steel mooring ropes are widely＇ used in the field It is nonlinear for restoring forces of mooring system to the displacement of floating bodies. So the nonlinear mooring stiffness coefficients and mooring stiffness matrix are computed on the basis of Taylor expansion. The application at the aspacts of mooring position and hydrodynamical calculation is studies. It is showed that nonlinearity of mooring stiffness can be easily considered in the method.