Failure of rock under tensile-compressive loading

Published on Jan 1, 2017
Jacob Sharpe1
Estimated H-index: 1
(UMN: University of Minnesota),
Joseph F. Labuz32
Estimated H-index: 32
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Abstract
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1953
1 Author (G. M. Smith)
6 Citations
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#1Justin M. Garrard (UT: University of Tennessee)H-Index: 2
#2Reza Abedi (UT: University of Tennessee)H-Index: 9
Abstract To capture the randomness and inhomogeneity of rock at microscale, a statistical volume element (SVE) averaging approach is proposed. The microcrack statistics of a real-world Yuen-Long marble sample is used to realize 2D microcracked domains. The size effect, i.e. the decrease of the mean and variation of homogenized strength field by increasing SVE size, is analyzed. Increasing the crack density is shown to have a similar effect. While smaller SVEs maintain a greater level of inhomoge...
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Abstract A displacement-softening contact model is proposed to simulate the failure behaviors of quasi-brittle materials using the discrete element method (DEM) based on spherical particles. The contact model is modified from the parallel bond option in the DEM code PFC 2 D / 3 D . By adjusting the softening coefficient, which defines the ratio between the unloading and loading contact stiffnesses in the normal component, the softening contact model can not only yield realistic compressive over ...
17 CitationsSource