Paper Title:
Simulation of Fracturing Process for Heterogeneous Material under Uniaxial Compression
  Abstract

A novel numerical model for simulating fracturing process of the heterogeneous materials such as rock or rocklike material has been developed and implemented in the FLAC, which is the numerical code for the engineering mechanics analysis. A constitutive model that captures an essential component of brittle material failure, that is, cohesion weakening and frictional strengthening (CWFS) is improved by taking accounting the elastic modulus of element may degrade when the element failure. Furthermore, a new energy index, Local Energy Release Rate (LERR), is put forward to simulate energy release during failure process by tracking the peak and trough values of elastic strain energy intensity before and after brittle failure. The numerical model has applied to simulate the initiation, propagation and coalescence of cracks in the failure processes of brittle material. Using this numerical model, we studied the failure processes of simulated rock specimens with different heterogeneity. The results suggest that the model is a powerful approach to the study of macroscopic fracturing behaviour of heterogeneous material.

  Info
Periodical
Advanced Materials Research (Volumes 194-196)
Edited by
Jianmin Zeng, Taosen Li, Shaojian Ma, Zhengyi Jiang and Daoguo Yang
Pages
930-934
DOI
10.4028/www.scientific.net/AMR.194-196.930
Citation
G. S. Su, G. Q. Chen, H. F. Zhou, "Simulation of Fracturing Process for Heterogeneous Material under Uniaxial Compression", Advanced Materials Research, Vols. 194-196, pp. 930-934, 2011
Online since
February 2011
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Price
$32.00
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