面向环境力学的离散元分析软件研发和工程应用  

Development and engineering application of discrete element analysis software for environmental mechanics

作　　者：季顺迎[1,2] 赵金凤[1,2] 狄少丞[1,2] 孙珊珊[1,2] 

机构地区：[1]大连理工大学工程力学系,辽宁大连116023 [2]大连理工大学工业装备结构分析国家重点实验室,辽宁大连116023

出　　处：《计算机辅助工程》2014年第1期69-75,共7页Computer Aided Engineering

基　　金：国家重点基础研究发展计划("九七三"计划)(2010CB731502);国家自然科学基金(41176012)

摘　　要：离散元计算分析软件对解决环境力学中的离散介质问题有至关重要的作用.针对环境灾害中的非规则颗粒单元,以圆球颗粒为基本单元,分别构造镶嵌组合单元、黏结组合单元、扩展圆盘单元和扩展多面体单元等,并在此基础上开发基于球形颗粒离散元方法的分析软件(Software of Spherical Particle-based Discrete Element Method,SDEM).该软件可模拟碎冰、岩石和道砟等颗粒材料的力学行为,能直观展现这些力学过程的发生、发展和演化;基于GPU的并行计算实现离散元大规模计算的高效性.对SDEM软件在地质灾害、工程海冰和铁路道床等领域的应用进行介绍.The software of discrete element computation and analysis is important to solve the discrete media problems in the environmental engineering. As to the irregular particle elements in the environmental disasters, the overlapped combination element, the bonded combination element, the dilated disk element and the dilated polyhedron element are constructed with the basic spherical element. The Software of Spherical Particle-based Discrete Element Method （SDEM） is developed. This SDEM software can simulate the mechanical behaviors of granular materials, such as ice floe, rock and ballast, and intuitively show the occurrence, development and evolution characteristics of environmental problems. Based on the parallel computations of GPU, the large scale calculation for discrete elements is implemented with large scale and high effectiveness. The applications of SDEM software are introduced in the fields of geological disaster, engineering sea ice and railway track.

关 键 词：离散元方法 环境力学 寒区工程 地质灾害 有砟铁路道床 

分 类 号：O347[理学—固体力学] TP319[理学—力学]