期刊
INTERNATIONAL JOURNAL OF PLASTICITY
卷 46, 期 -, 页码 130-142出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijplas.2012.07.002
关键词
Dislocations; Latent hardening; Yield condition; Strain hardening; Constitutive behavior
资金
- POSCO
- World Class University (WCU) program through the National Research Foundation of the Korean Ministry of Education, Science and Technology [R32-10147]
- Fundacao para a Ciencia e a Tecnologia (FCT) of Portugal [PTDC/EME-PME/116683/2010, PEst-C/EME/UI0481/2011]
- Fundação para a Ciência e a Tecnologia [PTDC/EME-PME/116683/2010, PEst-C/EME/UI0481/2011] Funding Source: FCT
The homogeneous anisotropic hardening (HAH) approach, which captures the Bauschinger effect in metallic materials effectively during load reversal, was extended to cross-loading cases with latent hardening effects. This continuum approach is based on the physical understanding of dislocation structure evolution during strain path changes but does not include the concept of kinematic hardening. The model was well validated for a deep drawing quality sheet sample. However, for a dual-phase steel, differences between predicted and experimental results were observed and discussed. Based on these results, additional validation tests and further improvement in the approach were suggested. (C) 2012 Elsevier Ltd. All rights reserved.
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