E. E. Damaskinskaya, V. L. Hilarov, Yu. S. Krivonosov, A. V. Buzmakov, V. E. Asadchikov, D. I. Frolov
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引用次数: 0
Abstract—In this study, we directly observed microcracks formed in a sample of rock under the action of uniaxial compressive load. Defects in the volume were detected by X-ray computed microtomography. A specific feature of the experiments is that a tomographic image of the sample was taken directly under mechanical load. Based on the analysis of tomographic slices, the fractal dimension and relative volume of microcracks were calculated at three stages of loading. Three-dimensional models of the defect structure were constructed to illustrate the change in the morphology of the main crack. Numerical experiments on the fracture of samples of heterogeneous materials were carried out using the discrete element model. The change in the fractal dimension of main cracks during their growth was investigated. Good agreement between the results of computer simulations and laboratory experiments has been established, which indicates the adequacy of the proposed model and allows in further studies to use it to study the behavior of local parameters that cannot be measured experimentally.
期刊介绍：
Izvestiya, Physics of the Solid Earth is an international peer reviewed journal that publishes results of original theoretical and experimental research in relevant areas of the physics of the Earth''s interior and applied geophysics. The journal welcomes manuscripts from all countries in the English or Russian language.
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