深水锚缆水下运动三维优化仿真研究  

Three-Dimensional Optimization Simulation Research on Underwater Movement of Deepwater Mooring Line

作　　者：张作涌 孙丽萍[1] 马刚[1] 

机构地区：[1]哈尔滨工程大学船舶工程学院,黑龙江哈尔滨150001

出　　处：《计算机仿真》2014年第11期208-211,216,共5页Computer Simulation

基　　金：国家高等学校学科创新引智计划(B07019);教育部博士点科研基金资助项目(20132304120008)

摘　　要：深水锚缆在波浪、海流等环境载荷的作用下在三维空间内产生运动,形成较为复杂的运动轨迹构形,对锚缆浮式结构产生了较大的作用力,存在锚缆在环境载荷作用下的大位移、大转动的几何非线性干扰。传统的基于悬链线理论的三维运动仿真方法在非线性干扰的情况下,无法准确仿真三维浮动特征点,仿真效果较差。为此提出一种新的锚缆三维运动仿真的方法。针对锚缆在环境载荷作用下的大位移、大转动的几何非线性问题,采用细长杆模型和拓展的拉伸方程进行时域三维数值计算仿真;结合三维图形库VPython解决缆索的三维模型的可视化抖动问题,并借助多线程方法提高仿真效率。以数据文件作为数值计算程序和可视化仿真程序进行仿真。结果表明新方法较为完善地联接了锚泊系统运动仿真的核心计算模块和后处理模块,锚泊运动仿真过程计算准确快速、可视化仿真效果流畅。The paper put forward a new method of three dimensional motion simulation. In view of the mooring line under the environmental load of large displacement and large rotation of geometric nonlinear problem, we used the thin rod model and the expanded tensile equation in time domain of 3-d numerical simulation. Combined with 3-d graphics library VPython cable visualization of three-dimensional model of the jitter problem, we improved the efficiency of simulation using muhi-thread method, with data file as the numerical calculation program for simulation and visualization simulation program. The results show that this method is more perfect to join the core of the mooring system motion simulation calculation module and a post-processing module, anchoring movement simulation process is fast and accurate visualization simulation effect is smooth.

关 键 词：锚泊系统 运动 数值计算 仿真 细长杆 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]