Smart Structures and Systems

Techno-Press (테크노프레스)
권호 표지
DOI QR코드

DOI QR Code

Study on the propagation mechanism of blast waves using the ultra-dynamic strain test system

  • Liu, Fei (Guangdong Provincial Key Laboratory of Deep Earth Sciences and Geothermal Energy Exploitation and Utilization, Shenzhen Clean Energy Research Institute, College of Civil and Transportation Engineering, Shenzhen University) ;
  • Gao, Mingzhong (Guangdong Provincial Key Laboratory of Deep Earth Sciences and Geothermal Energy Exploitation and Utilization, Shenzhen Clean Energy Research Institute, College of Civil and Transportation Engineering, Shenzhen University) ;
  • Guo, Ziru (School of Chemical Engineering, Anhui University of Science and Technology) ;
  • Zhou, Changtai (Guangdong Provincial Key Laboratory of Deep Earth Sciences and Geothermal Energy Exploitation and Utilization, Shenzhen Clean Energy Research Institute, College of Civil and Transportation Engineering, Shenzhen University) ;
  • Wang, Jun (Guangdong Provincial Key Laboratory of Deep Earth Sciences and Geothermal Energy Exploitation and Utilization, Shenzhen Clean Energy Research Institute, College of Civil and Transportation Engineering, Shenzhen University)
  • Received : 2021.01.19
  • Accepted : 2021.05.13
  • Published : 2021.07.25
⟨ Previous Next ⟩

Abstract

The propagation mechanism of blast waves in rock materials is hard to test. This paper explores the propagation mechanism of blast-induced strain waves in coal and rock using physical modeling together with numerical modeling. The results show that the strain waves in coal blocks were weaker than that in mortar blocks under the same blast loading. With increasing distance, the strain waves induced by the shock wave show a slighter decrease in coal blocks in the radial direction, but show a stable tendency in coal blocks and a slight decrease in mortar blocks in the tangential direction. However, the strain waves induced by the explosion gas show a stable tendency in both coal and mortar blocks. The actuation duration of strain waves in coal blocks is longer than that in mortar blocks. The gap of the radial strain waves induced by shock waves is narrowed gradually and moved similarly equal to each other both in coal and mortar blocks with increasing distance. The simulated results show similar values in coal and mortar blocks as compared with the test results. The coal blocks have a better fracturing effect than that of the mortar blocks in the physical test.

Keywords

Acknowledgement

The authors thank the supports from National Natural Science Foundation of China (No. U19A2098, No. 51827901).

References

  1. Ajamzadeh, M.R., Sarfarazi, V., Haeri, H. and Dehghani, H. (2018), "The effect of micro parameters of PFC software on the model calibration", Smart Struct. Syst., Int. J., 22(6), 643-662. http://dx.doi.org/10.12989/sss.2018.22.6.643
  2. Bai, J.Z. (2005), Theoretical Basis and Case Analysis of LSDYNA3D, Science Press, Beijing, Beijing, China.
  3. Barla, M., Piovano, G. and Grasselli, G. (2012), "Rock slide simulation with the combined finite-discrete element method", Int. J. Geomech., 12(6), 711-721. https://doi.org/10.1061/(asce)gm.1943-5622.0000204
  4. Cheng, Z.B., Li, L.H. and Zhang, Y.N. (2020), "Laboratory investigation of the mechanical properties of coal-rock combined body", Bull. Eng. Geol. Environ., 79, 1947-1958. https://doi.org/10.1007/s10064-019-01613-z
  5. Cho, S.H., Nakamura, Y. and Mohanty, B. (2008), "Numerical study of fracture plane control in laboratory-scale blasting", Eng. Fract. Mech., 75(13), 3966-3984. https://doi.org/10.1016/j.engfracmech.2008.02.007
  6. Choi, J.H., Choi, S.J. and Kim, J.H.J. (2018), "Evaluation of blast resistance and failure behavior of prestressed concrete under blast loading", Constr. Build. Mater., 173, 550-572. https://doi.org/10.1016/j.conbuildmat.2018.04.047
  7. Gao, X.T. (2010), Test on Super Dynamic Strain in Explosion Test Block, D. Huainan: Anhui University of Science & Technology.
  8. Gary, G. and Bailly, P. (1998), "Behaviour of quasi-brittle material at high strain rate. Experiment and modeling", Eur. J. Mech. - A/Solids, 17(3), 403-420. https://doi.org/10.1016/S0997-7538(98)80052-1
  9. Jayasinghe, B., Zhao, Z.Y., Chee, A.G.T., Zhou, H.Y. and Gui, Y.L. (2019), "Attenuation of rock blasting induced ground vibration in rock-soil interface", J. Rock Mech. Geotech. Eng., 11(4), 770-778. https://doi.org/10.1016/j.jrmge.2018.12.009
  10. Jean, Y., Chen, G. and Gu, C. (2019), "Computational modeling and forensic analysis for terrorist airplane bombing: A case study", Eng. Fract. Mech., 211, 137-160. https://doi.org/10.1016/j.engfracmech.2019.01.032
  11. Kim, B. and Yi, J.H. (2020), "Structural model updating of the Gageocho Ocean Research Station using mass reallocation method", Smart Struct. Syst., Int. J., 26(3), 291-309. http://dx.doi.org/10.12989/sss.2020.26.3.291
  12. Kong, D., Cheng, Z. and Zheng, S. (2019), "Study on failure mechanism and stability control measures in large-cutting-height coal mining face with deep-buried seam", Bull. Eng. Geol. Environ., 78(8), 6143-6157. https://doi.org/10.1007/s10064-019-01523-0
  13. Lee, E.L., Hornig, H.C. and Kury, J.W. (1968), "Adiabatic expansion of high explosive detonation products", Report UCRL-50422, University of California, Lawrence Radiation Laboratory, Livermore, CA, USA.
  14. Li, A., Fang, Q., Zhang, D.L., Luo, J.W. and Hong, X.F. (2018), "Blast vibration of a large-span high-speed railway tunnel based on microseismic monitoring", Smart Struct. Syst., Int. J., 21(5), 561-569. http://dx.doi.org/10.12989/sss.2018.21.5.561
  15. Liu, F., Guo, Z.R., Lv, H.Y. and Cheng, Z.B, (2018), "Test and analysis of blast wave in mortar test block", Int. J. Rock Mech. Min. Sci., 108, 80-85. https://doi.org/10.1016/j.ijrmms.2018.06.003
  16. Livermore Software Technology Corporation (LSTC) (2003), LSDYNA Keyword User's Manual, Version 970. Livermore, CA, USA.
  17. Mehdi, S.C., Ghodrat, K. and Mariusz, Z. (2009), "Numerical analysis of blast-induced wave propagation using FSI and ALEmulti-material formulations", Int. J. Impact Eng., 36(10-11), 1269-1275. https://doi.org/10.1016/j.ijimpeng.2009.03.007
  18. Nelson, S.M. and O'Toole, B.J. (2018), "Computational analysis of blast loaded composite cylinders", Int. J. Impact Eng., 119, 26-39. https://doi.org/10.1016/j.ijimpeng.2018.04.013
  19. Petropoulos, N., Wimmer, M. and Johansson, D. (2018), "Compaction of Confining Materials in Pillar Blast Tests", Rock Mech. Rock Eng., 51, 1907-1919. https://doi.org/10.1007/s00603-018-1447-8
  20. Qiu, P., Yue, Z.W. and Yang, R.S. (2019), "Mode I stress intensity factors measurements in PMMA by caustics method: A comparison between low and high loading rate conditions", Polym. Test., 76, 273-285. https://doi.org/10.1016/j.polymertesting.2019.03.029
  21. Rahmani, M., Oskouei, A.N. and Petrudi, A.M. (2020), "Experimental and numerical study of the blast wave decrease using sandwich panel by granular materials core", Defence Technology, In-press. https://doi.org/10.1016/j.dt.2020.09.004
  22. Rashad, M., Wahab, M.M.A. and Yang, T.Y. (2019), "Experimental and numerical investigation of RC sandwich panels with helical springs under free air blast loads", Steel Compos. Struct., Int. J., 30(3), 217-230. http://dx.doi.org/10.12989/scs.2019.30.3.217
  23. Sarfarazi, V., Haeri, H. and Shemirani, A.B. (2018), "Simulation of fracture mechanism of pre-holed concrete model under Brazilian test using PFC3D", Smart Struct. Syst., Int. J., 22(6), 675-687. http://dx.doi.org/10.12989/sss.2018.22.6.675
  24. Sarfarazi, V., Abharian, S. and Ghorbani, A. (2021), "Physical test and PFC modelling of rock pillar failure containing two neighboring joints and one hole", Smart Struct. Syst., Int. J., 27(1), 123-137. http://dx.doi.org/10.12989/sss.2021.27.1.123
  25. Shi, D.Y., Li, Y.C. and Zhang, S.M. (2005), Display Dynamic Analysis Based on ANSYS/LS-DYNA8.1, Tsinghua University Press, Beijing, China.
  26. Shi, Y.C., Hao, H. and Li Z.X. (2007), "Numerical simulation of blast wave interaction with structure columns", Shock Waves, 17(1-2), 113-133. https://doi.org/10.1007/s00193-007-0099-5