Impact Force Prediction for a Hopkinson Bar Using Axisymmetric Solid Elements

  • Rakesh K. Kapania
  • Tom-James G. Stoumbos
Conference paper

Abstract

One of the most widely used experimental configurations for high strain-rate material measurements is the split Hopkinson pressure bar. The concept of the Hopkinson bar involves the determination of dynamic stresses, strains, or displacements occurring at the end of a bar. It uses the longitudinal impact of a cylindrical projectile to generate an incident pulse. That pulse allows the specimen, sandwiched between two Hopkinson bars, to be loaded dynamically. In order to study the influence of the strain rate on the mechanical properties of the specimen, it is useful to be able to change the profile of the incident wave. To that end, different cylindrical and conical projectiles can be used.

Keywords

Convolution 

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References

  1. [1]
    Goldsmith, W. 1960. “Impact,” London: Edward Arnold Publishers Limited.Google Scholar
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    Johnson, W. 1972. “Impact Strength of Materials,” London: Edward Arnold Publishers Limited.Google Scholar
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    Lundberg, B. and Lesser, M. 1978. “On Impactor Synthesis” Journal of Sound and Vibration, 58(1), pp. 5–14.CrossRefGoogle Scholar
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    Odeen, S. and Lundberg, B. 1991. “Prediction of Impact Force by Impulse Response Method,” Int. J. Impact Engng., 11(2), pp. 149–158.CrossRefGoogle Scholar
  5. [5]
    Stoumbos, T. G., and Kapania, R. K., 1994. “Prediction of Impact Force Generated by Impact of a Composite Projectile on a Hopkinson Bar”, accepted for publication in the proceedings of the 65 th Shock & Vibration Symposium , San Diego, California, Oct. 31-Nov. 3.Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1995

Authors and Affiliations

  • Rakesh K. Kapania
    • 1
  • Tom-James G. Stoumbos
    • 1
  1. 1.Virginia Polytechnic Institute and State UniversityBlacksburgUSA

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