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Numerical Analysis of Flattened Brazilian Disc Test Based on the Cusp Catastrophe Theory

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  • Min Wang
  • Ping Cao

Abstract

The Brazilian disc test is a simple and useful technique to determine the tensile strength of rock materials. By using FLAC3D, 63 numerical simulations in total were performed when flattened Brazilian disc coefficient and Poisson’s ratio were different. Based on Griffith theory, the corresponding FISH language was compiled to record the Griffith equivalent stress. Through analysis of numerical simulation results, it is indicated that fracture plane was not the plane going through center of the Brazilian disc, which was in good agreement with the references. In addition, the flattened Brazilian disc coefficients had greater influence on tensile strength than Poisson’s ratio. Based on cusp catastrophe theory, the flattened Brazilian disc coefficient should not exceed 0.035 for the flattened Brazilian disc tests. Consequently, a tensile strength empirical formula considering flattened Brazilian disc coefficient by utilizing the flattened Brazilian disc test was established, which was , .

Suggested Citation

  • Min Wang & Ping Cao, 2016. "Numerical Analysis of Flattened Brazilian Disc Test Based on the Cusp Catastrophe Theory," Mathematical Problems in Engineering, Hindawi, vol. 2016, pages 1-9, July.
    • Handle: RePEc:hin:jnlmpe:4517360
    DOI: 10.1155/2016/4517360
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