Paper Title:

Numerical Approach to Investigating Pre-Existed Cracks in Rocks

Periodical Key Engineering Materials (Volumes 297 - 300)
Main Theme Advances in Fracture and Strength
Edited by Young-Jin Kim, Dong-Ho Bae and Yun-Jae Kim
Pages 2612-2616
DOI 10.4028/www.scientific.net/KEM.297-300.2612
Citation Shu Hong Wang et al., 2005, Key Engineering Materials, 297-300, 2612
Online since November, 2005
Authors Shu Hong Wang, Huo Ran Sun, Tao Xu, Tian Hong Yang, En'de Wang
Keywords Damage, Failure Pattern, Numerical Simulation, Rock Multi-Crack
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Abstract

Rock failure analysis is an important research in investigating the behavior of rocks, especially its failure process. And a rock sample, which contains pre-existing cracks, is a typical sample to investigate the rock failure behavior which under tension or compression, because almost all the natural materials exist micro-flaws more or less. This mode is closed to the natural material character. By using Rock Failure Process Analysis code, RFPA2D, we present a numerical simulation and similar materials experiment on rock samples with two pre-existing cracks in uniaxial compression were conducted to investigate the initiation, propagation, coalescence of cracks and failure mechanism of rock. Numerical simulations visually reproduce the process of crack initiation, propagation and coalescence in rock, which are well tallied with experiments in laboratory.