海上补给高架索建模和仿真研究

针对海上补给装备研制过程中尚无高架索模型可以使用的现状,将多体动力学理论引入高架索建模中,研究了绳索多刚体动力学模型、刚柔混合体动力学模型和多柔体动力学模型的建立方法。将3种绳索模型依次用来模拟高架索,并利用ADAMS软件对海上横向干货补给过程进行仿真计算。计算结果表明:3种高架索模型的速度、受力、角速度、转矩的变化趋势与高架索实际力学特性基本一致,绳索多体动力学模型可以模拟海上补给高架索;绳索多柔体动力学模型较其他两种绳索多体动力学模型更能反映出高架索的全部动力学特性。

Modelling and Simulation of Highline Cable for Replenishment at Sea

The multi-body dynamics theory is used to establish a highline model, because there is not any appropriate highline model for research on sea replenishment equipment. A method for establishing multi-rigid-body dynamics model, rigid-flexible-mixed-body dynamics model and multi-flexible-body dynamics model of rope is studied. Three rope models are used to simulate the highline, and the sea dry cargo replenishment transverse process is simulated with ADAMS. The results show that the development trend of velocity, force, angular velocity and torque for three models in simulation process is basically consistent with the actual mechanical properties of highline cables, meaning that the multi-body dynamics model of rope can simulate the highline replenishment at sea; the multi-flexible-body dynamics model of rope is more closer to the actual structure of highline cable compared to the other two kinds of multi-body dynamics models of rope.