砌体结构倒塌反应的图形仿真技术

对基于离散单元法的砌体结构倒塌反应仿真系统作了简介 ,重点讨论图形仿真模块程序的编制方法及其与核心计算程序的接口方式 .阐述了三维图形标准OpenGL的优点和有关图形表现机制 ,并通过C 与OpenGL的结合 ,解决了仿真系统中数值计算模块与图形模块的数据传递、计算结果的动态演示、可视化效果的改善等问题 ,同时保证了模块的可扩展 .通过所开发程序的运行结果和模型振动台试验现场录像的对比 ,说明了开发方法的合理性和实用性 .最后对结构仿真软件开发中OpenGL图形标准的应用经验进行了小结

Graphic Simulation Technology for Collapse Response Analysis of Masonry Structures

A collapse-simulation system for masonry structures based on discrete element method (DEM) is introduced;programming for graphic module and its interface with the numerical calculation program are discussed.This paper expounds the advantages and display mechanism of OpenGL(open graphic library),and solves some substantial problems,like the exchange of data between numerical calculation module and graphic module,the dynamic presentation of calculation results,the improvement of visualization,by employing simultaneously of C and OpenGL,meanwhile ensures the expandability of the graphic module.The rationality and practicability of the proposed method are verified by comparison between the display results of the developed program and the video results of the shaking table test for a model of masonry structure.Finally the authors summarize the experiences to apply OpenGL in development of structrual simulation software.