A calibration methodology to obtain material parameters for the representation of fracture mechanics based on discrete element simulations. (January 2017)

• Record Type: Journal Article
• Authors: Behraftar, S.; Galindo Torres, S.A.; Scheuermann, A.; Williams, D.J.; Marques, E.A.G.; Janjani Avarzaman, H.
• Is Part Of: Computers and geotechnics. Volume 81(2017)
• Page Start: 274
• Page End: 283
• Publication Date: 2017-01
• Subjects: Crack mouth opening displacement -- Dimensional analysis -- Discrete element method; Engineering geology -- Data processing -- Periodicals; Soil mechanics -- Data processing -- Periodicals; Rock mechanics -- Data processing -- Periodicals; 624.1510285
• DOI: 10.1016/j.compgeo.2016.08.029
• Languages: English
• ISSNs: 0266-352X

Abstract

Abstract: A micro-mechanical model is developed to study the fracture propagation process in rocks. The model is represented by an array of bonded particles simulated by the discrete based method. Experimental results of tests using Cracked Chevron Notched Brazilian Discs (CCNBD) with different inclination angles relative to the direction of loading are used to calibrate and validate the model. Dimensional analysis is used to identify and minimise the microscale parameters to be considered. The comparison between experimental and computational results shows a satisfactorily good agreement.