计算机仿真技术在分析特殊荷载问题中的应用

Application of Computer Simulation Technology in Special Load Prob lems

随着力学研究的深入和计算机技术的发展,计算机仿真已经逐渐成为结构分析和设计的重要工具。特别是当结构遇到爆炸、贯穿、冲击、倒塌等特殊荷载工况时,试验研究的难度非常大,而计算机仿真技术的安全、高效、节约等优点也得到了更加充分的体现。该文通过对爆炸荷载下的抗爆门安全性分析;纽约世界贸易中心倒塌原因分析这两个实际工程例子来说明计算机仿真技术在这些特殊工况下应用的优点及一些需要注意的问题。

With the development of mechanics and computer technology,computer simulation has become an important tool in the field of the structure analysis and design.Especially,when the structures are under blast,penetrate,impact of collapse loads,it is very difficult to do reseach analysis using test method.On the contrary,the advantages of computer simulation method such as safe,efficient and cheap,are shown obviously in these problems.Two practical examples are presented in this paper.One is the analysis for the safety of blast-resist doors under blast load.The other is the research on the collapse of World Trade Center in New York.These examples are used to illuminate the advantages of computer simulation technology on special load conditions and emphasis some problems in the simulation technology.