Research on application of coupling technique of adaptive continuum/discontinuum periodic boundary cell to equivalent rock mass
Article
Wu, S, Zhou, Y, Gao, Y et al. (2012). Research on application of coupling technique of adaptive continuum/discontinuum periodic boundary cell to equivalent rock mass
. 31(SUPPL.1), 3117-3122.
Wu, S, Zhou, Y, Gao, Y et al. (2012). Research on application of coupling technique of adaptive continuum/discontinuum periodic boundary cell to equivalent rock mass
. 31(SUPPL.1), 3117-3122.
The coupling technique of adaptive continuum/discontinuum(AC/DC) periodic boundary cell, as a new construction method of calculation model in PFC based on particle flow theory, was introduced. In this method, a compacted and balanced pbrick was constructed; and then it was replicated mirrorlikely to construct particles model. Therefore, with decreasing computing time and saving computing resource greatly, it can avoid the defect of consuming great time in the generation of model to reach the mechanical equilibrium state. Taking an uniaxial compression test of equivalent rock mass for example, under the same initial calculation condition, the results produced by AC/DC technique and general method were compared in uniaxial compressive strength, stress-strain curves and failure characteristics, displayed highly similarity. The research results show that the computational efficiency of AC/DC technique is much higher than that of general particles construction method, and the advantage will be particularly prominent with the increment of model size. So its implementation of AC/DC technique can lay a solid foundation for following scientific research of engineering-scale rock mass property.
