The 3D numerical study on growth and coalescence of pre-existing flaws in rock-like materials subjected to compressive loads
The General Particle Dynamics (GPD), which is a novel meshless numerical method, is pro-posed to simulate initiation and propagation and coalescence of the 3D pre-existing penetrating and embedded flaws under biaxial compression.Failure process of rock-like materials subjected to biaxial compressive loads is investigated using the numerical code GPD3D.Moreover, the internal crack evolution processes are successfully simulated using GPD3D.With increasing lateral stress, the secondary cracks keep growing in the samples, while the growth of wing cracks is restrained.The samples subjected to biaxial compression are mainly splitted into fragments in a shear failure mode, which is different from splitting failure of the samples subjected to uniaxial compression.For specimens with macroscopic preexisting flaws, the simulated failure modes, the simulated coalescence types and the simulated types of cracks are in good agreement with the experimental results.
X.P.Zhou J.Bi
School of Civil Engineering, Chongqing University, Chongqing, P.R.China
国际会议
The 3rd ISRM Young Scholars Symposium on Rock Mechanics(第三届国际岩石力学青年学者论坛)
北京
英文
293-298
2014-11-08（万方平台首次上网日期，不代表论文的发表时间）