Enhancement in the Modeling of Temperature and Strain Rate-Dependent Plastic Hardening Behavior of a Sheet Metal
- Authors
- Leem, Dohyun; Bong, Hyuk-Jong; Barlat, Frederic; Lee, Myoung-Gyu; Song, Jung-Han; Kim, Daeyong
- Issue Date
- 8월-2015
- Publisher
- WILEY-V C H VERLAG GMBH
- Keywords
- constitutive equations; Johnson-Cook model; Khan-Huang-Liang model; modified Hollomon/Voce model; strain rate
- Citation
- STEEL RESEARCH INTERNATIONAL, v.86, no.8, pp.902 - 914
- Indexed
- SCIE
SCOPUS
- Journal Title
- STEEL RESEARCH INTERNATIONAL
- Volume
- 86
- Number
- 8
- Start Page
- 902
- End Page
- 914
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/92918
- DOI
- 10.1002/srin.201500006
- ISSN
- 1611-3683
- Abstract
- In the present study, viscoplastic hardening behavior of aluminum alloy 3003 sheet was measured and existing hardening models were evaluated in terms of the accuracy for predicting strain rate and temperature-dependent flow behaviors. Moreover, a modified hardening model was proposed to capture the flow stress-strain responses under various strain rates and temperatures with enhanced accuracy. Mechanical responses of the material were measured by using uniaxial tensile test at various temperature (approximate to 25-250 degrees C) and strain rates (approximate to 0.001-0.3 s(-1)), and the split Hopkinson pressure bar (SHPB) test was also conducted to obtain flow behavior at the strain rate over 700 s(-1) at room temperature. Based on these experimental data, two well accepted viscoplastic constitutive models-Johnson-Cook and Khan-Huang-Liang-were evaluated. Finally, the Hollomon/Voce type model was further developed, which resulted in significant improvement in predicting the flow stress curves under wide range of strain rate and temperature.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Engineering > Department of Materials Science and Engineering > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.