Improved endochronic theory of viscoplasticity and its application to plastic-wave propagation
Technical Report
·
OSTI ID:5743618
The constitutive equations for strain-hardening metallic materials with strain-rate effects are presented in the framework of the endochronic theory of viscoplasticity using the improved intrinsic time measure. The derived constitutive c are then applied to the viscoplastic wave-propagation problem of a thin-walled tube subjected to impact loading. Numerical results using the improved endochronic time and theoretical results using conventional plasticity together with the experimental results are compared. It is shown that they are in good agreement qualitatively. In summary, the improved intrinsic time measure does predict both loading and unloading behavior in accordance with the observed phenomena.
- Research Organization:
- Argonne National Lab., IL (USA)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 5743618
- Report Number(s):
- ANL-CT-81-37; ON: DE82011459
- Country of Publication:
- United States
- Language:
- English
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