狭窄水域中单点系泊/拖带船舶动力学行为的试验研究  

Experimental investigation on dynamic responses of single point mooring/towing vessels in narrow water area

作　　者：杜度 张纬康[1] 毕毅[1] 王波[1] 

机构地区：[1]海军工程大学船舶与海洋工程系,湖北武汉430033

出　　处：《水动力学研究与进展（A辑）》2003年第3期319-325,共7页Chinese Journal of Hydrodynamics

摘　　要：对单点系泊 /拖带船舶在狭窄水域中的动力学特性进行了试验研究。找到了船模的四种稳定运动模式 ;探讨了不同来流速度和系缆长度对于船只的动力学响应和系缆力的影响。试验表明 ,船模运动呈现出典型的非线性特征 ,观察到了吸引子的共存、跳跃和Hopf分岔现象 ,系缆张力的大小与船舶的动力学行为密切相关 ,振转运动 (鱼尾状摆动 )发生时的系泊力远大于船只静止时的缆绳张力 ;振转运动中的突发系缆载荷可能是导致缆绳断裂的重要原因。与宽广水域相比 ,狭窄水域中的系泊Experimental study on the dynamic characteristics of single point mooring/towing vessels is presented. Four kinds of the movement modes of ship model were found. The influence of different current velocities and mooring line lengths on the dynamic response of vessels and mooring force was investigated. It was found that there is strong nonlinear characteristics in motion responses of ship model. Jumping, Hopf bifurcation and coexistence of different attractors were observed. The magnitude of mooring force has a direct bearing on the dynamic responses of moored ships. Mooring force in fishtailing movement is much large than than that in still. Impulsive mooring line froce may be an important factor leading to rupture of the mooring line. Compared with that in broad water area, fishtailing movement of mooring/towing vessels in narrow water area is more likely to take place.

关 键 词：狭窄水域 单点系泊 近海工程 船舶拖带 动力学特征 

分 类 号：U674.38[交通运输工程—船舶及航道工程]