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Acta Armamentarii ›› 2019, Vol. 40 ›› Issue (7): 1518-1536.doi: 10.3969/j.issn.1000-1093.2019.07.023

• Comprehensive Review • Previous Articles     Next Articles

Research Progress of Large-diameter Split Hopkinson Bar Experimental Technique

GUO Ruiqi1,2, REN Huiqi2, ZHANG Lei2, LONG Zhilin1, WU Xiangyun2, XU Xiangyun2, LI Zebin2, HUANG Kui2   

  1. (1.College of Civil Engineering and Mechanics, Xiangtan University, Xiangtan 411105, Hunan, China;2.National Defense Engineering Institute, Academy of Military Science of PLA, Luoyang 471023, Henan, China)
  • Received:2018-10-16 Revised:2018-10-16 Online:2019-09-03

Abstract: The large-diameter split Hopkinson bar (SHB) technique is an important means for studying the dynamic mechanical properties of concrete and other heterogeneous materials, but the basic assumptions of traditional split Hopkinson pressure bar may not always hold with the increase in SHB diameter, which has brought new challenges to experimental technique, data processing and analysis of experimental results. The brief development history of large-diameter split Hopkinson bar technique is reviewed. Then the wave dispersion effect, stress uniformity in specimen, non-parallel end-faces of specimen, and transverse inertia effect due to the increase in SHB diameter, as well as the corresponding solutions are summarized. The research direction and hotspots of large-diameter SHB experimental technique are discussed. Key

Key words: large-diametersplitHopkinsonbar, wavedispersioneffect, stressuniformity, dynamicmechanicalproperty

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