| 基于物理模型的渔网网衣动态模拟与可视化研究 |
| |
| 引用本文： | 孙霄峰,尹勇,张秀凤.基于物理模型的渔网网衣动态模拟与可视化研究[J].大连水产学院学报,2009,24(6):563-567. |
| |
| 作者姓名： | 孙霄峰 尹勇 张秀凤 |
| |
| 作者单位： | 大连海事大学,航海动态仿真与控制实验室,大连,116026 |
| |
| 基金项目： | 国家重点基础研究发展计划"973"项目 |
| |
| 摘 要： | 为了在渔船模拟器中进行渔网的动态模拟，建立了渔网的数学模型，并进行其可视化研究。基于集中质量模型将渔网离散为通过无质量弹簧连接的质量点集合，根据牛顿第二定律建立了质量点的动力学方程，并考虑了均匀流对渔网运动的影响。为了进行渔网运动的实时模拟，利用隐式Newmark-β算法求解渔网的数学模型，增大了可进行稳定计算的时间步长。对一尼龙网片在水流中的运动进行了模拟，并利用OpenGL函数库开发了渔网的三维可视化程序，从而验证了该模型的合理性。
|
| 关 键 词： | 渔船模拟器 渔网数学模型 集中质量模型 Newmark-β算法 渔网可视化 |
Dynamic simulation and visualization of fishing nets based on a physical model |
| |
| SUN Xiao-feng,YIN Yong,ZHANG Xiu-feng.Dynamic simulation and visualization of fishing nets based on a physical model[J].Journal of Dalian Fisheries University,2009,24(6):563-567. |
| |
| Authors: | SUN Xiao-feng YIN Yong ZHANG Xiu-feng |
| |
| Institution: | SUN Xiao-feng,YIN Yong,ZHANG Xiu-feng(Laboratory of Marine Simulation & Control,Dalian Maritime University,Dalian 116026,China) |
| |
| Abstract: | A mathematical model for fishing net was established and visualization of fishing net was carried out to simulate the dynamic behavior of a fishing net in a fishing simulator. The fishing net was divided into finite particles connecting to springs without mass, depending on lumped mass model. According to Newtons Second Law, the particles dynamic equation was set up which took the influence of uniform current into account. In order to simulate fishing nets behavior in real-time, Newmark-β method was used to calculate the mathematical model for fishing net, which can stably take large time steps. Behaviors of a panel net and a mid-water trawl net in uniform current were simulated and a three-dimensional visualization application program had also been developed by using OpenGL library software, which validated the models rationality. |
| |
| Keywords: | fishing simulator mathematical model of fishing net lumped mass model implicit integration method visualization of fishing net |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
