Paper Title:
Constitutive Modeling for Uniaxial Time-Dependent Ratcheting of SS304 Stainless Steel
  Abstract

Based on the experimental results of uniaxial time-dependent ratcheting behavior of SS304 stainless steel at room temperature and 973K, three kinds of time-dependent constitutive models were employed to describe such time-dependent ratcheting by using the Ohno-Abdel-Karim kinematic hardening rule, i.e., a unified viscoplastic model, a creep-plasticity superposition model and a creep-viscoplasticity superposition model. The capabilities of such models to describe the time-dependent ratcheting were discussed by comparing with the corresponding experimental results. It is shown that the unified viscoplastic model cannot provide reasonable simulation to the time-dependent ratcheting, especially to those with certain peak/valley stress hold and at 973K; the proposed creep-plasticity superposition model is reasonable when the creep is a dominant factor of the deformation, however, it cannot provide a reasonable description when the creep is weak; the creep-viscoplastic superposition model is reasonable not only at room temperature but also at high temperature.

  Info
Periodical
Key Engineering Materials (Volumes 340-341)
Edited by
N. Ohno and T. Uehara
Pages
817-822
DOI
10.4028/www.scientific.net/KEM.340-341.817
Citation
G. Z. Kang, Q. H. Kan, J. Zhang, Y. J. Liu, "Constitutive Modeling for Uniaxial Time-Dependent Ratcheting of SS304 Stainless Steel", Key Engineering Materials, Vols. 340-341, pp. 817-822, 2007
Online since
June 2007
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