Constitutive equations of stress-strain responses of aluminum sheet under stress path changes

Takeshi Uemori, Satoshi Sumikawa, Shohei Tamura, Fushahito Yoshida

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Aluminum sheet metals have been widely utilized for a light weight construction of automobile. However, these metals still remain one of the difficult materials to predict the accurate final shapes after press forming processes, because of several mechanical weak features such as strong plastic anisotropy of yield stress, large Lankford value, and so on. In order to solve the problems, the present author has developed a new constitutive model. The model can describe accurate non-proportional hardening behaviors of an aluminum sheet metal. In the present research, several experimental procedures were carried out to reveal the mechanical properties of an aluminum sheet under proportional and non-proportional loading. From the comparisons between experimental data and the corresponding calculated results by the proposed constitutive model, the performance of our model was evaluated. The evaluation of some springback analyses were also carried out. The calculated results show good agreements with the corresponding experimental data.

Original languageEnglish
Title of host publicationAdvances in Engineering Plasticity XI
PublisherTrans Tech Publications Ltd
Pages101-104
Number of pages4
ISBN (Print)9783037855485
DOIs
Publication statusPublished - Jan 1 2013
Externally publishedYes
Event11th Asia-Pacific Conference on Engineering Plasticity and Its Applications, AEPA 2012 - Singapore, Singapore
Duration: Dec 5 2012Dec 7 2012

Publication series

NameKey Engineering Materials
Volume535-536
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795

Other

Other11th Asia-Pacific Conference on Engineering Plasticity and Its Applications, AEPA 2012
CountrySingapore
CitySingapore
Period12/5/1212/7/12

Keywords

  • Aluminum sheet metals
  • Constitutive model
  • Non-proportional hardening behaviors
  • Springback

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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  • Cite this

    Uemori, T., Sumikawa, S., Tamura, S., & Yoshida, F. (2013). Constitutive equations of stress-strain responses of aluminum sheet under stress path changes. In Advances in Engineering Plasticity XI (pp. 101-104). (Key Engineering Materials; Vol. 535-536). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/KEM.535-536.101