›› 2009, Vol. 30 ›› Issue (S1): 29-32.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Test research on dynamic properties of granite under strain rate from 101 to 102 s?1

ZHANG Hua1, LU Feng2   

  1. 1. College of Civil Engineering, Hohai University, Nanjing 210098, China; 2. Zhejiang Provincial Architectural Design and Research Institute, Hangzhou 310006, China
  • Received:2008-07-24 Online:2009-08-10 Published:2011-03-16

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Abstract:

The dynamic characteristics test on granite under impact loading of strain rate between 101 to 102 s?1 is carried out by split Hopkinson pressure bar (SHPB). Three improvements of SHPB are operated: (1) using large-size Hopkinson pressure bar with variable cross-section and strict slenderness ratio to specimen; (2) using impulse shaper which is made of medicinal adhesive and annealed red copper; (3) setting up universal joint between incident bar and specimen. And the dynamic characteristics of granite under repeated impact are obtained by carrying out varying speed loading test. The results show that the granite has strain rate effect, hardening effect and jumping behaviors of stress-strain curve.

Key words: granite, split Hopkinson pressure bar, strain rate effect, hardening effect

CLC Number: 

  • TU 458+.3
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