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Haeri, H., Khaloo, A. R, Shahriar, K., Fatehi Marji, M., Moaref vand, P.. (1393). A boundary element analysis of crack-propagation mechanism of micro-cracks in rock-like specimens under a uniform normal tension. , 6(1), 73-93. doi: 10.22044/jme.2015.362
H. Haeri; A. R Khaloo; K. Shahriar; M. Fatehi Marji; P. Moaref vand. "A boundary element analysis of crack-propagation mechanism of micro-cracks in rock-like specimens under a uniform normal tension". , 6, 1, 1393, 73-93. doi: 10.22044/jme.2015.362
Haeri, H., Khaloo, A. R, Shahriar, K., Fatehi Marji, M., Moaref vand, P.. (1393). 'A boundary element analysis of crack-propagation mechanism of micro-cracks in rock-like specimens under a uniform normal tension', , 6(1), pp. 73-93. doi: 10.22044/jme.2015.362
Haeri, H., Khaloo, A. R, Shahriar, K., Fatehi Marji, M., Moaref vand, P.. A boundary element analysis of crack-propagation mechanism of micro-cracks in rock-like specimens under a uniform normal tension. , 1393; 6(1): 73-93. doi: 10.22044/jme.2015.362

A boundary element analysis of crack-propagation mechanism of micro-cracks in rock-like specimens under a uniform normal tension

Journal of Mining and Environment
مقاله 8، دوره 6، شماره 1، فروردین 2015، صفحه 73-93    اصل مقاله (1.67 M)
نوع مقاله: Case Study
شناسه دیجیتال (DOI): 10.22044/jme.2015.362
نویسندگان
H. Haeri* 1؛ A. R Khaloo2؛ K. Shahriar3؛ M. Fatehi Marji4؛ P. Moaref vand3
1Postdoctoral Fellow in Civil Engineering, Department of Civil Engineering, Sharif University of Technology, Member of National Elites Foundation, Tehran, Iran
2Head of Center of Excellence in Structure and Earthquake Engineering, Sharif University of Technology, Tehran, Iran
3Department of Mining and Metallurgical Engineering, Amirkabir University of Technology, Tehran, Iran
4Faculty of Mining and Metallurgy, Institution of Engineering, Yazd University, Yazd, Iran
چکیده
In this work, the mechanism for fracture of brittle substances such as rocks under a uniform normal tension is considered. The oriented straight micro-cracks are mostly created in all the polycrystalline materials resulting from the stress concentrations. The present work focuses on the interactions of the pre-existing micro-cracks, which can grow and propagate within a rock-like specimen. The micro-crack initiation and propagation in rock-like specimens is investigated using the Fortran Code TDDCRACK2D, which is a 2D displacement discontinuity method (DDM) for crack analysis, a boundary element computer code based on the linear elastic fracture mechanics (LEFM) theory. In the present work, a higher order DDM is used to implement special crack tip elements for estimation of the stress intensity factors (SIFs) and crack initiation angles for the wing-crack problems initiated at different angles from the original micro-crack tips in an infinite specimen under a uniform tension.
کلیدواژه‌ها
Micro-Cracks؛ crack Interaction؛ crack Initiation؛ Rock-Like Specimens؛ Linear Elastic Fracture Mechanics (LEFM) Theory؛ Displacement Discontinuity Method (DDM)؛ Crack Coalescence
آمار
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