全回转起重船多系统耦合运动响应仿真分析

Dynamic Response Simulation Analysis of Floating Crane Vessel Based on Multi-system Coupling Model

根据运动学基本原理,计入船-吊物、船-锚链耦合影响以及起重船自身受到的外环境载荷,建立船舶多系统运动模型。利用MATLAB/Simulink软件进行仿真,对多系统耦合作用下的船舶运动进行数值分析。分别在不同的遭遇浪向角和不同的吊臂回转角下,对船舶在各自由度上的位移进行比较,得到其对船舶运动参数的影响规律。结果表明:起重船运动过程中因计入多系统耦合影响,自身运动也表现出更为符合实际的运动特性,为准确预报全回转起重船多系统的运动响应提供了更为科学的理论依据。

The ship multi-system motion model is established according to the basic principles of kinematics, in which the coupling effect between vessel and lifting rope, the coupling effect between vessel and cable and the environmental forces on the vessel. The MATLAB/Simulink software is used to simulate and to do the numerical analysis of the floating crane vessel under the coupling influence of multi-system. Respectively, for different wave headings angle and different revolution angles of boom, the displacement of the vessel on each degree of freedom are compared. The influence law of vessel motion parameters is presented. The motion of floating crane vessel is more actual because of the coupling effect of the multi-system. The model can be used as the scientific theory for predicting the behaviors of floating crane vessel.