CAJ | 학술논문

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.
위료재어선모의기중진행어망적동태모의,건립료어망적수학모형,병진행기가시화연구.기우집중질량모형장어망리산위통과무질량탄황련접적질량점집합,근거우돈제이정률건립료질량점적동역학방정,병고필료균균류대어망운동적영향.위료진행어망운동적실시모의,이용은식Newmark-β산법구해어망적수학모형,증대료가진행은정계산적시간보장.대일니룡망편재수류중적운동진행료모의,병이용OpenGL함수고개발료어망적삼유가시화정서,종이험증료해모형적합이성.
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 Newtons Second Law, the particles dynamic equation was set up which took the influence of uniform current into account. In order to simulate fishing nets 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 models rationality.