TY - GEN
T1 - Constitutive equations of stress-strain responses of aluminum sheet under stress path changes
AU - Uemori, Takeshi
AU - Sumikawa, Satoshi
AU - Tamura, Shohei
AU - Yoshida, Fushahito
PY - 2013
Y1 - 2013
N2 - 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.
AB - 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.
KW - Aluminum sheet metals
KW - Constitutive model
KW - Non-proportional hardening behaviors
KW - Springback
UR - http://www.scopus.com/inward/record.url?scp=84873300391&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84873300391&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/KEM.535-536.101
DO - 10.4028/www.scientific.net/KEM.535-536.101
M3 - Conference contribution
AN - SCOPUS:84873300391
SN - 9783037855485
T3 - Key Engineering Materials
SP - 101
EP - 104
BT - Advances in Engineering Plasticity XI
PB - Trans Tech Publications Ltd
T2 - 11th Asia-Pacific Conference on Engineering Plasticity and Its Applications, AEPA 2012
Y2 - 5 December 2012 through 7 December 2012
ER -