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We present recent developments in the Discrete Element method (DEM) for analysis of drilling mechanics problems typical in the oil and gas industry. A new local DEM constitutive model able to predict the non-linear behavior of soft and hard soils and rock under loads inducing multi-fracture of the material is presented. The DEM model is validated on the analysis of triaxial tests on cement and concrete samples and then applied to the study of drill-bit mechanics. Applications of the DEM and a combined DEM-FEM procedure to drilling problems are presented.
CitationOñate, E. [et al.]. Advances in the Discrete Element Method for drilling mechanics problems. A: International Conference on Discrete Element Methods and Related Techniques. "DEM 6: 6th International Conference on Discrete Element Methods and Related Techniques, August 5-6, 2013". Golden, Colorado: 2013, p. 321-326.
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