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Calculation of Stress Intensity Factors at Both Ends of the Indenter under Eccentric Loads

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  • Xuefeng Yang
  • Yili Duo

Abstract

During rock breaking by drill, cone rolls on the rock surface and contact between gear teeth and surface is basically positive Mode-I plane indentation and bias Mode-I plane indentation. During bias action, there will be an asymmetrical Mode-I singular stress field at both ends of the indenter. The stress field singularity is of the same order as Mode-I crack tip and with the same function distribution. In this paper, based on the J 2 integral conservation law, a new method is established for solving stress intensity factor of bias Mode-I plane indentation, which not only provides respective stress intensity factor of both ends of the indenter but also compares relations between eccentricity, partial load, and stress intensity factor. The study not only provides a method for establishment of new cone drill engineering design but also improves rock layer boring efficiency.

Suggested Citation

  • Xuefeng Yang & Yili Duo, 2020. "Calculation of Stress Intensity Factors at Both Ends of the Indenter under Eccentric Loads," Mathematical Problems in Engineering, Hindawi, vol. 2020, pages 1-12, April.
    • Handle: RePEc:hin:jnlmpe:5174680
    DOI: 10.1155/2020/5174680
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