摘要
在拉张外载作用下,应用RFPA2D程序对端部开切口、内部预制裂纹试样和坚硬颗粒试样进行数值模拟分析,并对不同均质度下岩样的贯通机制和载荷-位移曲线进行分析。结果表明,非均质性存在产生试样的应力分布局部集中和变形局部化,是引起裂纹复杂相互作用和扩展贯通的根源。
The failure process of notched specimens with pre-existed cracks or hard granules under external tensile loading are simulated with RFPA2D (Rock Failure Process Analysis) code. The influence of different heterogeneity on the coalescence of cracks and the load-displacement curve is analyzed. The simulating results indicate that it is the local stress concentration and deformation localization due to the heterogeneity that causes the complex interaction of cracks and different patterns of propagation and coalescence.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2002年第8期1111-1114,共4页
Chinese Journal of Rock Mechanics and Engineering
基金
国家973项目"大陆强震机理与预测"(G1998040700)
国家杰出青年科学基金(59525408)
王宽诚博士后奖励基金资助项目。
