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Experimental Studies of Sea and Model Ice Fracture Mechanics

  • Marina Karulina
  • Alexey Marchenko
  • Alexandr Sakharov
  • Evgeny Karulin
  • Peter Chistyakov
Chapter
Part of the Springer Oceanography book series (SPRINGEROCEAN)

Abstract

We study ice fracture mechanics based on loading experiments with the floating ice beams with fixed ends. Both natural and model ice properties were investigated. Full-scale field works were performed on sea ice of the Svalbard Archipelago. We also performed model ice studies of two ice types in the Ice Basin of the Krylov State Research Centre (KSRC) in St. Petersburg: fine granule and columnar. In the experiments, an ice beam was cut in the ice cover, both ends of which were kept attached to the surrounding ice sheet. Then a horizontal force perpendicular to the side surface of the beam was applied to the middle section of the beam. For these purposes, the vertical cylindrical indenters with a diameter of 0.15 and 0.02 m were used both in field and model conditions. The indenters provided the force application through the whole ice thickness. The natural ice thickness range from 0.4 to 0.6 m; the model ice was 0.05 m thick. The beam width was almost equal to the ice thickness while the beam length varied from 2 to 8 ice thicknesses. The visual observations and the force-time records allowed tracing qualitative patterns of the beam failure process. We measured the breaking force dependence on the ice type and ice beam geometry. The beam tests described here allowed us to find the relationships of various strength parameters of ice crushing, compressive and tensile strength, as well as to compare the behavior of natural and model ice under identical loading conditions.

Notes

Acknowledgements

The authors acknowledge the support from UNIS and the Research Council of Norway through the Centre for Research-based Innovation (SAMCoT project).

References

  1. 1.
    Vershinin, S. A. (1988). Ice action on offshore structures. In Results of science and technology, issue: Water Transport (Vol. 13). Moscow.Google Scholar
  2. 2.
    Sanderson, T. J. O. (1988). Ice mechanics—Risks to offshore structures. Graham and Trotman.Google Scholar
  3. 3.
    Schulson, E. M., & Duval, P. (2009). Creep and fracture of ice (p. 417). Cambridge University Press.Google Scholar
  4. 4.
    Schwarz, J., & Weeks, W. (1977). Engineering properties of sea ice. Journal of Glaciology, 19(81), 499–531.CrossRefGoogle Scholar
  5. 5.
    Sodhi, D. S. (2001). Crushing failure during ice-structure interaction. Engineering Fracture Mechanics, 68, 1889–1921.CrossRefGoogle Scholar
  6. 6.
    Timco, G. W., & Weeks, W. F. (2010). A review of the engineering properties of sea ice. Cold Regions Science and Technology, 60, 107–129.CrossRefGoogle Scholar
  7. 7.
    Sodhi, D. S. (1998). Vertical penetration of floating ice sheets. International Journal of Solids and Structures, 35(31–32), 4275–4294.CrossRefGoogle Scholar
  8. 8.
    Marchenko, A., Karulin, E., Chistyakov, P., Sodhi, S., Karulina, M., & Sakharov, A. (2014). Three dimensional fracture effects in tests with cantilever and fixed ends beams. In Proceedings of the 22nd IAHR ice symposium. Singapore, ICE14-1178.Google Scholar
  9. 9.
    Sakharov, A., Karulin, E., Marchenko, A., Karulina, M., Sodhi, D., & Chistyakov, P. (2015). Failure envelope of the brittle strength of ice in the fixed-end beam test (two scenarios). In Proceedings of the 23rd international conference on port and ocean engineering under Arctic conditions. Trondheim, Norway.Google Scholar
  10. 10.
    Enkvist, E., & Makinen, S. (1984). A fine-grain model-ice. In Proceedings IAHR ice symposium (Vol. 2, pp. 217–227). Hamburg, Germany.Google Scholar
  11. 11.
    Evers, K.-U., & Jochmann, P. (1993). An advanced technique to improve the mechanical properties of model ice developed at the HSVA ice tank. In The 12th international conference on port and ocean engineering under arctic conditions, 17–20 August 1993 (Vol. 2, pp. 877–888). Hamburg.Google Scholar
  12. 12.
    Nortala-Hoikkanen, A. (1990). FGX model ice at the Masa-Yards Arctic Research Centre. In IAHR ice symposium (pp. 247–259). Espoo, Finland.Google Scholar
  13. 13.
    Timco, G. W. (1986). A new type of model ice for refrigerated towing tanks. Cold Regions Science and Technology, 12, 175–195.CrossRefGoogle Scholar
  14. 14.
    Von Bock und Polach, R., Ehlers, S., & Kujala, P. (2013). Model-scale ice—Part A: Experiments. Cold Regions Science and Technology, 94, 74–81.CrossRefGoogle Scholar
  15. 15.
    Karulin, E., Marchenko, A., Karulina, M., Chistyakov, P., Sakharov, A., Ervik, A., et al. (2014). Field indentation tests of vertical semi-cylinder on first-year ice. In Proceedings of the 22nd IAHR ice symposium 2014. Singapore, ICE14-1125.Google Scholar
  16. 16.
    Experimental verification of theoretical approach for model ice failure mechanism in ice model basin. (1998). Technical report of KSRI. Issue 39545.Google Scholar
  17. 17.
    Method of ice cover simulation taking into account fracture toughness of ice. (1990). Technical report of KSRI. Issue 33141.Google Scholar
  18. 18.
    Shimansky, Yu. A. (1958). Handbook on ships mechanics (Vol. 1, p. 627). Leningrad.Google Scholar

Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  • Marina Karulina
    • 1
    • 2
  • Alexey Marchenko
    • 3
    • 2
  • Alexandr Sakharov
    • 4
    • 2
  • Evgeny Karulin
    • 1
    • 2
  • Peter Chistyakov
    • 4
    • 2
  1. 1.Krylov State Research CentreSaint PetersburgRussia
  2. 2.Sustainable Arctic Marine and Coastal Technology (SAMCoT), Centre for Research-Based Innovation (CRI), Norwegian University of Science and TechnologyTrondheimNorway
  3. 3.The University Centre in SvalbardLongyearbyenNorway
  4. 4.Moscow State UniversityMoscowRussia

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