A practical two-surface plasticity model and its application to spring-back prediction
SCIE
SCOPUS
- Title
- A practical two-surface plasticity model and its application to spring-back prediction
- Authors
- Lee, MG; Kim, D; Kim, C; Wenner, ML; Wagoner, RH; Chung, KS
- Date Issued
- 2007-01
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Abstract
- A practical two-surface plasticity model based on classical Dafalias/Popov and Krieg concepts was derived and implemented to incorporate yield anisotropy and three hardening effects for non-monotonous deformation paths: the Bauschinger effect, transient hardening and permanent softening. A simple-but-effective stress-update scheme avoiding overshooting was proposed and implemented. Constitutive parameters were fit to 5754-O aluminum alloy using uniaxial tension/compression data. Spring-back predictions using the resulting material model were compared with experiments and with single-surface material models which do not account for permanent softening. The two-surface model improved such predictions significantly as compared with single-surface models, while the differences between two-surface simulations and experiments were insignificant. (c) 2006 Elsevier Ltd. All rights reserved.
- Keywords
- two-surface model; permanent softening; Bauschinger effect; transient behavior; overshooting; sheet metal forming; ANISOTROPIC YIELD FUNCTIONS; KINEMATIC HARDENING LAWS; INTERSTITIAL-FREE STEEL; 2 SURFACE MODEL; CYCLIC PLASTICITY; SHEET METALS; TRANSIENT-BEHAVIOR; PART II; STRAIN; DEFORMATION
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/26241
- DOI
- 10.1016/J.IJPLAS.2006.10.011
- ISSN
- 0749-6419
- Article Type
- Article
- Citation
- INTERNATIONAL JOURNAL OF PLASTICITY, vol. 23, no. 7, page. 1189 - 1212, 2007-01
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- There are no files associated with this item.
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