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Additional Cyclic Hardening of metals under Tension-Torsion and Triaxial Tension-Compression Loadings

  • Sylvain Calloch
  • Didier Marquis
Conference paper

Abstract

The additional cyclic hardening due to the nonproportionality of the loading has been shown for the first time by H. Lamba and O. Sidebottom, [1]. These first experimental results have clearly shown that the constitutive models developed from uniaxial experiments were not able to predict the behavior of metals under complex loadings. Since, a great number of experiments have been made in order to understand the hardening and the softening of metals under multiaxial loadings, [2], [3], [4], [5]. Now, a lot of phenomenological models of elasto-plasticity have been proposed for the description of the additional cyclic hardening under complex paths. In all cases, the authors consider that out of phase tension-torsion test leads to the maximum hardening, [6], [7], [8]. This hypothesis is now controversial. On one hand, some experimental data obtained, on a Nickel-Base alloy (waspaloy), with “butterfly” loading path, [9], exhibit a higher hardening than the one corresponding to a 90 deg. out-of-phase path. On the other hand, some simulations made with a micromechanical model due to G. Cailletaud lead for some very complex loading paths to a very high cyclic hardening, again higher than the one corresponding to an out-of-phase path.

Keywords

Triaxial Test Strain Path Equivalent Plastic Strain Cyclic Hardening Cyclic Plasticity 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

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Copyright information

© Springer-Verlag Berlin Heidelberg 1995

Authors and Affiliations

  • Sylvain Calloch
    • 1
  • Didier Marquis
    • 1
  1. 1.Laboratoire de Mécanique et TechnologieCachanFrance

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