浮吊海上补给作业的动态特性仿真分析与研究

浮吊在进行海上补给时,吊重绳索的下降、摆动以及船体的受迫运动,使吊重下降时很容易碰撞甲板,引发重大事故。考虑吊点处的弹性力,建立了浮吊吊物系统的动力学方程。在MATLAB平台上采用数值分析的方法,分别对吊重静止时和作业时的动态特性进行研究。结果表明绳长、海况、下降速度等对补给安全有重要影响。计算得出的吊重下降速度和位移规律,可为波浪补偿系统提供重要依据。

Simulation Studies on Dynamic Characters of Floating Cranes

When the floating cranes carry out replenishment at sea, the decrease and swing of hoisting rope as well as the forced vibration of hull will easily crash the deck and cause vital accidents. Considering the elastic force at the hoisting point, dynamic equation of cargo system of the floating crane was established. With the method of numerical analysis in MATLAB, the dynamic characteristics in stillness and operation were studied. The results indicate that the length of ropes, sea conditions and decreasing speed make important impact on safety replenishment. The speed and displacement regulation of hoists obtained can provide the great basis for the heave compensation system.