基于动态布放的潜标锚系浮力配置优化研究

通过使用MATLAB仿真计算方法,研究了潜标锚系浮力配置方案对于动态布放过程力学性能的影响。文中列举了4种锚系浮力配置方案,运用集中质量法建立了4种锚系的弹簧-质量节点模型,通过编写MATLAB仿真程序,模拟了4种锚系的布放运动过程。通过对布放运动过程中的锚系姿态轨迹、垂向运动、水平运动、海床基着底过程和缆段张力变化等指标进行对比,得出4种锚系各自布放力学性能指标上的优劣。仿真结果表明:将多个浮球集成为单个大浮力节点的方案缩短了锚系整体长度,有利于锚系在水中维持垂直度,但降低了锚系抗漂移能力;将浮力节点分散布置在各非浮力结构节点上方,可以降低连接缆段上的张力极值,但会使张力变化幅值增大。基于仿真结果,建议潜标锚系浮力配置优化的设计思路为:集中小浮球为紧凑浮力节点,适当加长上部浮力节点与下部非浮力节点之间的距离,浮力节点分散布置和适量减少上部的浮力节点数量。

Study on Buoyancy Configuration Optimization of Submerged Buoy Mooring Based on Dynamic Deployment

In order to study the effect on the dynamic performance of submerged buoy mooring by buoyancy configuration during deployment,MATLAB numerical simulation is carried out.For four kinds of buoyancy configuration structures listed in this paper,mathematical models are established based on the lumped-mass method,and the process of deployment is simulated by using MATLAB program.Terminologies,such as moving posture,vertical movement,horizontal movement,bottoming process,tension change,are analyzed to evaluate four different mooring structures.Simulated results indicate that,by concentrating floats to larger buoyancy nodes,the length of mooring is shortened and mooring posture in water holds straighter.The results also indicate that,with distributed buoyancy nodes configured above the non-buoyancy nodes,mooring can lower the maximum value of tension on cables but increase its variation amplitude.Based on the simulation results,such measures are included for improving the dynamic performance of mooring deployment from buoyancy configuration:concentrated floats structure,properly lengthened distance between upper floats and bottom non-buoyancy parts,distributed buoyancy configuration,and less upper float structure.