摘要
在裂隙切割块体生成算法的基础上,结合现有的有限元自适应网格生成技术,系统地探讨了一种基于有向图遍历理论的平面流形元覆盖系统的生成算法。该算法将有限元网格作为流形元覆盖系统的生成所需的数学网格,利用有向图的关联矩阵并结合块体搜索算法,形成最终的流形元覆盖系统。同时,该算法能有效地在现有的各种有限元单元的基础上,形成流形元法所需的流形单元。
A generation algorithm of cover system for numerical manifold method(NMM) is introduced. This algorithm is based on the travel theory of the oriented graph and the formation of the block system is incised by the joints and fractures. By this algorithm combined with the adaptive generation technology for finite element method(FEM) mesh, the mathematics mesh is built, and then in the travel theory of the oriented graph, a final cover system for NMM can be efficiently formed. This method also provides a way to obtain the available element library for the FEM in the NMM based on existing FEM elements.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2003年第5期711-716,共6页
Chinese Journal of Rock Mechanics and Engineering
关键词
数值分析
流形元覆盖系统
有向图遍历
块体生成算法
数学覆盖
numerical analysis, cover system, travel of the oriented graph, generation algorithm of blocks, mathematics cover, physical cover
