Kinematic hardening rules with critical state of dynamic recovery, Part I: Formulation and basic features for ratchetting behavior

• Autores: N. Ohno, J.-D. Wang
• Localización: International journal of plasticity, ISSN 0749-6419, Vol. 9, Nº 3, 1993, pág. 375
• Idioma: inglés
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• Resumen

  • Kinematic hardening rules formulated in a hardening/dynamic recovery format are examined for simulating rachetting behavior. These rules, characterized by decomposition of the kinematic hardening variable into components, are based on the assumption that each component has a critical state for its dynamic recovery to be activated fully. Discussing their basic features, the authors show that they can predict much less accumulation of uniaxial and multiaxial ratchetting strains than the Armstrong and Frederick rule. Comparisons with multilayer and multisurface models are made also, resulting in a finding that the simple one in the present rules is similar to the multilayer model with total strain rate replaced by inelastic (or plastic) strain rate. Part II of this work deals with applications to experiments.