铁道科学与工程学报2016，Vol.13Issue(3)：447-453,7.
预制双裂隙类岩材料断裂特性的无网格法数值模拟
Application of ele ment -free method to fracture analysis of rock -like materials with double prefabricated cracks
摘要
Abstract
In order to investigate the failure mode and the crack expansion route,the compression test on rock -like specimens with two prefabricated cracks was carried out by utilizing the servo control uniaxial loading test machine.Afterward,the fundamental theory of the element -free method is briefly illustrated.Then,the pro-posed method,which is based on the weighted moving least square approximation,is extended to numerical sim-ulation of fracture behavior of rock -like specimens with multiple cracks.Specifically,the fracture behavior and the crack propagation path of rock -like specimens are numerically calculated and analyzed.At the same time, the curves of the stress and displacement fields at the tip of the fissures are obtained.Finally,the numerical so-lutions are compared with the available experimental results to verify the advantages,accuracy and availability of element -free method to fracture and discontinuous deformation problems.It is demonstrate that this method is superior to other methods in terms of fracture analysis.关键词
预制裂隙/类岩材料/单轴压缩/无网格法/数值分析/裂纹扩展Key words
prefabricated cracks/rock -like material/uniaxial compression/element -free method/numerical a-nalysis/crack propagation分类
建筑与水利引用本文复制引用
刘京铄,曹平,范金星,蒲成志,黄雪姣..预制双裂隙类岩材料断裂特性的无网格法数值模拟[J].铁道科学与工程学报,2016,13(3):447-453,7.基金项目
国家自然科学基金重点资助项目（51174228，51274249）；湖南省教育厅科技项目 （）
