NUMERICAL TESTS OF THE INFLUENCE OF THE ORIENTATION OF STRATIFICATION ON THE PROCESS OF CUTTING OF ROCKS
Keywords:
rocks cutting, stratify rocks, crack propagation, finite elements methodAbstract
The paper presents results of the numerical simulation of the crack propagation occurring in the course of chip element formation in case of cutting stratified rock material. As a result of the simulation, it was found that a characteristic, rapid increase of the loosening force of the chip element occurs when stratification is directed in relation to the cutting direction at an angle of ca. 160°.Downloads
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Cigla M., Yagiz S., Ozdemir L. 2001, Application of Tunnel Boring Machines in Underground Mine Development. International Mining Congress, Ankara, Turkey.
Pietruszczak S., Łydzba D., Shao J.F. 2002, Modeling of inherent aniso-tropy in sedimentary rocks. International Journal of Solids and Structures, 39, pp. 637-648.
Podgórski J. 1984, Limit state condition and dissipation function for isotropic materials. Archives of Mechanics, 36, pp. 323-342.
Podgórski J. 1985, General Failure Criterion for Isotropic Media. Journal of Engineering Mechanics ASCE, 111, 2, pp. 188-201.
Podgórski J. 2002, Influence Exerted by Strength Criterion on the Direction of Crack Propagation in the Elastic- Brittle Material. Journal of Mining Science, 38 (4), pp. 374-380.
Podgórski J. 2005, The influence of the layer direction in elastic-brittle material on the progress of crack propagation. Minetech, vol. 26, No. 2, pp. 50-54.
Podgórski J., Jonak J. 2005, Influence of strength heterogeneity factor o crack shape in laminar rock- like materials. Symposium on: Multi-scale modeling of damage and fracture processes in composite materials-Book of abstracts. IUTAM - International Union of Theoretical and Applied Mechanics, Kazimierz Dolny, Poland.
Podgórski J., Jonak J., Jaremek P. 2004, The strength asymmetry effect in laminar rock-like materials on crack propagation. Mine Planning and Equipment Selection 2004, Proceedings of the Thirteenth International Symposium on Mine Planning and Equipment Selection, Wrocław, p. 129.
Podgórski J., Jonak J., Jaremek P., Dey N.C. 2005, The influence of the boundary conditions of a model on the direction of crack propagation in laminar elastic- brittle material. Journal of Mines, Metals & Fuels. Incorporating Indian Mining Journal (II ISSN 0022-275), vol. 53, Nos. 5&6, pp. 88-91.
Thuro K., Saun G. 1996, Drillability in hard rock drill and blast tunneling. Felsbau, 14, Nr. 2.
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