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Indexed by:会议论文

Date of Publication:2013-03-30

Included Journals:EI、CPCI-S、Scopus

Volume:690-693

Page Number:3054-+

Key Words:Rock fracturing process; Nonlinear finite element method; Penetration depth; Specific energy; Disc cutter distribution

Abstract:Three-dimensional dynamic fracture process of rock under action of disc cutter is simulated by using nonlinear finite element method. Rock constitutive relationship is characterized by Drucker-Prager model. The influences of disc angular velocity and vertical force on the penetration depth and the specific energy are systematically investigated. The simulation results show that the rock fracturing process obviously presents properties of step crushing under action of disc cutter. The proposed numerical simulation presents an improvement on existing ones in terms of providing three-dimensional visual description of rock fracturing process.