Numerical Simulation of Fracture Propagation of Heterogeneous Material

Abstract:

For the Three Gorges granite, a finite difference software package FLAC was used to study failure process of heterogeneous rock material. Based on mineral components identification results of the granite and fuzzy clustering method, the actual image date was transformed into the finite difference grid by applying image processing techniques. A convenient and efficient two-dimensional numerical modeling method for heterogeneous geomaterials was presented. Then, failure process of the granite were simulated in uniaxial compression test based on experimental strain soft model, and the stress concentration phenomenon was analyzed. The results show that the numerical modeling method based on digital image processing can be used to calculate the mechanical responses of geomaterials by taking their heterogeneities into considerations.

• Periodical: Applied Mechanics and Materials (Volumes 170-173)
• Pages: 581-584
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.170-173.581
• Online since: May 2012
• Authors: Ze Qi Zhu*, Qian Sheng, Xiao Dong Fu
• Keywords: Digital Image Processing, Fracture Process, Fuzzy Clustering, Heterogeneous Material, Numerical Simulation

References

[1] Tang C A, Liu H, Lee PKK, et al. INT. J. ROCK MECH. MIN. SCI. 37, 555 (1999)

[2] Fang Z, Harrison J P. INT. J. ROCK MECH. MIN. SCI. 39, 459 (2002)

[3] Yue Z Q, Chen S, Tham L G. Computers and Geotechnics 30, 375 (2003)

[4] Chen Sha, Yue Zhongqi, Tham L G. Chinese Journal of Geotechnical Engineering 27, 956 (2005)

[5] Kwan A K H, Mora C F, Chan H C. Cement & Concrete Research 29, 1403 (1999)

[6] XU W J, YUE Z Y, HU R L. INT. J. ROCK MECH. MIN. SCI. 45, 749 (2008)

[7] LEBOURG I, RISS J, PIRARD E. Engineering Geology 73, 37 (2004)

[8] HE Guang-na, ZHU Fan-yu, ZHANG Ye-min. EARTHQ. ENG. ENG. VIB. 9, 83 (1989)

[9] Zhang Fan, Sheng Qian, Zhu Zeqi, et al. Chinese J. ROCK MECH. ENG. 27, 2651 (2008)