The application of a continuum damage model in the finite element simulation of the progressive failure and localization of deformation in brittle rock structures

Singh, Umed; Digby, P. J.

doi:10.1016/0020-7683(89)90019-x

Cited by 4 publications

(1 citation statement)

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“…The deformation localization in brittle materials like rock is mainly caused by micro-faults, such as micro-cracks and pores, and the localization zone will develop along with the increase of load [4,5]. Many researchers studied on the deformation localization and crack propagation through theoretical, experimental and numerical methods [5][6][7][8][9][10][11]. They find that the formation and evolution of strain localization are influenced by multiple factors including loading rate, temperature, boundary condition, initial damage and density.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Strain Localization of Rock-Like Material Containing Single Flaw

Jin

Cao

Cheng

et al. 2015

KEM

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The uniaxial compression tests are conducted for the specimens with single pre-existing flaw. Numerical simulations using PFC (Particle Flow Code) are carried out to investigate the localization phenomenon. The formation and evolution of deformation localization are studied with PFC models, including the one of intact and different flaw inclination. The dips change from 0 ̊ to 75 ̊. Based on the simulation results, the effects of pre-existing flaw on the macro shear zone are analyzed. Compared with the intact specimen, the deformation localization is more likely to occur in the pre-flawed specimen, because the flaws accelerate the development of localization phenomenon. The flaw advances the micro-crack emergence and accelerates their increase. It is also found that the flaw inclination has an effect on the formation and evolution of the shear zone. By affecting the distribution of micro-cracks, the flaw changes the macro shear zone of specimens.

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