摘要
有限元软件在工程设计和科学研究中得到了广泛应用,能否方便地观察模型、反映最新的理论和研究成果,是衡量一个有限元软件是否成功的重要因素,而它们都与可视化密切相关,可视化的图形系统已成为有限元软件中必不可少的一部分。通过对目前比较常用的GDI绘图和OpenGL进行比较分析,显示了用OpenGL开发的三维有限元图形系统具有的速度快、绘图功能强、选择和反馈方便、视觉效果好等优越性,并介绍了如何使用OpenGL函数库以及面向对象技术有效地组织地下结构工程有限元前、后处理图形系统所涉及的复杂数据。在此基础上提出程序的数据结构和基本算法,说明其如何与有限元模型交互操作,如何能快速选择节点和单元,如何绘制彩色云图和等值线图等。最后给出部分实例对其加以说明。
The finite element analysis software has been widely used in engineering design and scientific research. Being able to observe model conveniently and reflect new theory and achievement are two important factors to judge whether the software is successful. These two factors are correlative with visualization, so visualization is indispensable of the finite element analysis software. The authors make a comparison between GDI and OpenGL which are both popular in graphics system at present： and reveal superiorities of the latter such as extra high speed, powerful drawing function, convenient selection and feedback, nice visual effect, etc. in designing 3D finite element graphics system. How to use OpenGL API and object-oriented programming method to organize complicated data from the 3D finite element graphics system of underground structure is introduced too, and the basic program frame and arithmetic are presented. The authors also introduce how to operate 3D finite element model interactively, how to select node and element quickly, how to draw nephogram and isogram, etc.. Some engineering examples are given.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2006年第5期1015-1020,共6页
Chinese Journal of Rock Mechanics and Engineering
基金
湖北省环境岩土工程重点实验室开放课题资助项目(T110304)
关键词
数值分析
有限元法
OPENGL
面向对象设计
numerical analysis
finite element method. OpenGL
object-oriented designing
