EVOLVING CELLULAR AUTOMATA(ECA) AND ITS APPLICATION TO MODEL THE BRITTLE ROCK FAILURE

摘要：

Based on the theory of cellular automata, the evolving cellular automata(ECA) model is proposed in the paper. In the ECA system, the triangular cell and the node cell are taken as the neighborhoods with respect to each other and evolve according to the local interaction rules. And the strain-stress relations of the brittle rock are considered to be consistent with the perfect elastic constitutive law in mesocosmic view. The tensile failure and shear fracture are taken into account by the triangular cell’s evolvement based on the modified Mohr-Coulomb criteria. The heterogeneity of the brittle rock, the brittle rock failure mechanism and the end effect of the brittle rock failure are discussed by the numerical simulation. Some numerical experiments about the brittle rock under uniaxial compression tests are carried out using ECA numerical method. And some primary conclusions have been drawn out.

作者: WANG Shi-min ZHU He-hua FENG Xia-ting WANG Yong-jia

作者单位: Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China Key Lab of Rock and Soil Mechanics, Institute of Rock and Soil Mechanics, The Chinese Academy of Sci School of Resource Environment and Civil Engineering, Northeastern University, Shenyang 110004, Chin

会议类型: 国际会议

会议名称: 第九届工程结构完整性国际会议(The Ninth International Conference on Engineering Structural Integrity Assessment)

会议地点: 北京

会议语种:英文

在线出版日期: 2007-10-15（万方平台首次上网日期，不代表论文的发表时间）