A novel technique for dynamic shear testing of bulk metals with application to 304 austenitic stainless steel Articles uri icon


  • Jia, B.
  • Pesci, R.
  • Bernier, R.
  • Bahi, S.
  • Wood, P.

publication date

  • November 2020

start page

  • 153

end page

  • 171


  • 204-205

International Standard Serial Number (ISSN)

  • 0020-7683

Electronic International Standard Serial Number (EISSN)

  • 1879-2146


  • This paper describes a new single-shear specimen (SSS) and method to characterize the dynamic shearbehavior of bulk metals using a traditional Split Hopkinson Pressure Bar (SHPB). By this method, the shearbehavior of materials can be tested conveniently over a wide range of strain rates within 105s-1. Thistechnique was applied to a 304 austenitic stainless steel (ASS) under shear strain rates from 0.001 s-1 to 38700 s-1 at room temperature. Based on finite element (FE) simulations, it was found that the deformation of the specimen shear zone was dominated by shear stress/strain components. Stress stateparameters represented by stress triaxiality eta and Lode angle parameter theta hwere found very close to zero, indicating a deformation mode of simple shear. Besides, an obvious gap existed between the local deformation behavior in the specimen shear zone and the macroscopic stress-strain relations measured by thestrain gauges on the SHPB bars. A correction coefficient method was adopted to extract the real shear behavior from the experimentally obtained force-displacement data. Through comparisons betweenthe tested and simulated stress-strain curves, a good agreement was obtained.


  • single-shear specimen; dynamic strain rate; simple shear; finite element modeling; correction coefficient method