A Study on dynamic Fracturing Behavior of Anisotropic Granite by SHPB Test

스플릿 흡킨슨 바(SHPB)를 이용한 이방성 화강암의 동적파괴거동 연구

  • 최미진 (전남대학교 대학원 지구시스템공학과) ;
  • 조상호 (전북대학교 에너지자원공학과) ;
  • 양형식 (전남대학교 건설지구환경공학과)
  • Published : 2008.06.30

Abstract

Dynamic fracturing of anisotropic granite was investigated by SHPB (Split Hopkinson Pressure Bar). Energy absorption during the test and maximum stress were increased as strain rate increased. Maximum stresses in every direction were dependent on the strain rate but not so sensitive to anisotropy. Elastic wave velocity was decreased as strain rate increased and dependent on strain rate in every direction. Especially, elastic wave velocity decreased more rapidly in a strong rock.

References

  1. Hakalehto, K. O., 1969, The behavior of rock under impulse loads: A study using the Split Hopkinson bar method, Acta Polytechnica Scandinavica, Ch. 81
  2. Zhang, Z. X., J. Yu, S. Q. Kou and P-A. Lindqvist, 2000, Effects of high temperatures on dynamic rock fracture, Int. J. Rock Mech. Min. Sci., 38, 211-225
  3. 김덕현, 백환조, 1999, 미세균열의 방향에 따른 암석의 아방성에 관한 연구,대한지질공학회 학술발표회 논문집, 58-63
  4. Birkimer, D. L., 1971, A possible fracture criterion for the dynamic tensile strength of rock, Proc. 12th US Symp. Rock Mech., 573-590
  5. Renliang Shan, Yusheng Jiang, Baoqiang Li, 2000, Obtaining dynamic complete stress-strain curves for rock using the Split Hopkinson Pressure Bar technique, Int. J. Rock Mech. Min. Sci. 37, 983-992 https://doi.org/10.1016/S1365-1609(00)00031-9
  6. Cho, S.H., Y. Nakamura and K. Kaneko, 2004, Dynamic fracture process analysis of rock subjected to stress wave and gas pressurization, Int. J. Rock Mech. Min. Sci., 41.3, CD-ROM
  7. Lundberg, B., 1976, Energy absorption in Dynamic rock fragmentation, Int. J. Rock Mech. Min. Sci. & Geomech. Abstr. 13, 187-197 https://doi.org/10.1016/0148-9062(76)91285-7
  8. Rinehart, J. S., 1965, Dynamic fracture strengths of rocks, Proc. 7th Symp. on Rock Mechanics I 205-208
  9. Bucher, J. and Z. Bilek, 1981, Application of Hopkinson Split bar test to the mechanical and fracture properties to rock, Fracture for Ceramics, Rock, and Concrete, ASTM STP-745, Freiman, & Fuller (eds.), 185-195
  10. Lipkin, J. et al., 1977, Dynamic flow and fracture of rock in pure shear, Proc. 18th US Symp. Rock Mech., Keystone, Colorado, 3B2-1
  11. Zhang, Z. X., S. Q. Kou, J. Yu, Y. Yu and L. G. Jiang, P-A. Lindqvist, 1999, Effects of loading rate on rock fracture, Int. J. Rock Mech. Min. Sci. 36, 597-611 https://doi.org/10.1016/S0148-9062(99)00031-5
  12. Kumar, A., 1968, Effect of stress rate and temperature on the strength of baselt and granite, Geophysics 33.3, 501-510
  13. Mohanty, B., 1987, Strength of rock under high strain rate loading conditions applicable to blasting, Proc. of 2nd Symp. on Rock Fragmentation by Blasting, Keystone, USA, pp. 72-78