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has been cited by the following article:

• TITLE: Study on Interface Friction Model for Engineering Materials Testing on Split Hopkinson Pressure Bar Tests

  AUTHORS: Yubin Lu, Songyan Zhang

  KEYWORDS: Kinetic Interface Friction Model; Sliding Velocity; Contact; Split Hopkinson Pressure Bar (SHPB); Engineering Materials

  JOURNAL NAME: Modern Mechanical Engineering, Vol.3 No.1, February 27, 2013

  ABSTRACT: Split Hopkinson pressure bar (SHPB) has become a frequently used technique to measure the uniaxial compressive stress-strain relation of various engineering materials at high strain-rates. The accuracy of an SHPB test is based on the assumption of uniaxial and uniform stress distribution within the specimen, which, however, is not always satisfied in an actual SHPB test due to the existence of some unavoidable negative factors, e.g., interface friction constrains. Kinetic interface friction tests based on a simple device for engineering materials testing on SHPB tests are performed. A kinetic interface friction model is proposed and validated by implementing it into a numerical model. It shows that the proposed simple device is sufficient to obtain kinetic interface friction results for common SHPB tests. The kinetic friction model should be used instead of the frequently used constant friction model for more accurate numerical simulation of SHPB tests.