The Fracturing Behavior of Detected Rock under Blasting Loads

Abstract:

In order to investigate the effect of defects on rock fracturing under dynamic loads, blasting experiments using PMMA specimens with pre-existing defects were conducted. The defects include holes, pores and small open joints, etc., and they are randomly distributed. In order to verify the experimental results, numerical simulation was implemented. It is shown that under blasting loads, most cracks initiate at pre-existing defect tips, and near free boundary, many cracks developed near defect tips are parallel the free boundary. The numerical results qualitatively agree with experimental results

• Periodical: Applied Mechanics and Materials (Volume 142)
• Pages: 193-196
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.142.193
• Online since: November 2011
• Authors: Chao Wang, Zhe Ming Zhu, Tao Zheng
• Keywords: Blasting, Crack, Defect, Numerical Simulation

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