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Sheet Necking-III. Strain-Rate Effects

  • J. W. Hutchinson
  • K. W. Neale

Abstract

The effect of material strain-rate dependence on necking retardation is examined for biaxially-stretched sheets. Rate-dependent versions of both flow theory and deformation theory are employed in an analysis of the growth of long-wavelength nonuniformities. Material strain-rate sensitivity is seen to substantially increase the predicted limit strains beyond their corresponding values for time-independent material response. We also discuss the influence of strain-rate dependence on imperfection- sensitivity and forming limit curves.

Keywords

Uniaxial Tension Deformation Theory Limit Strain Flow Theory Form Limit Curve 
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References

  1. [1]
    J. W. Hutchinson and K. W. Neale, Acta Met., 25 (1977), 839.CrossRefGoogle Scholar
  2. [2]
    A. K. Ghosh, J. Eng. Mater. Technol. (Trans. ASME, H), 99 (1977), 264.CrossRefGoogle Scholar
  3. [3]
    A. K. Ghosh, Research Publication GMR-2323, General Motors Research Laboratories, Warren, Mich. (1977).Google Scholar
  4. [4]
    Z. Marciniak, K. Kuczynski and T. Pokora, Int. J. Mech. Sci., 15 (1973), 789.CrossRefGoogle Scholar

Copyright information

© Plenum Press, New York 1978

Authors and Affiliations

  • J. W. Hutchinson
    • 1
  • K. W. Neale
    • 2
  1. 1.Harvard UniversityCambridgeUSA
  2. 2.Université de SherbrookeSherbrookeCanada

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