TY - GEN
T1 - Prediction of forming limits of the multilayer metallic sheet
AU - Oya, T.
AU - Jeong, C.
AU - Yanagimoto, J.
PY - 2011
Y1 - 2011
N2 - In this paper, the forming limit of a multilayer metallic steel sheet is numerically investigated. Multilayer metallic sheets are an emerging sheet metal that is designed to achieve both high strength and enough formability, which is seriously demanded especially from the automotive industry. Unfortunately, its mechanism of enhanced ductility, fracture behavior, and forming limits have not been sufficiently studied. Therefore, a new stress-strain curve formula is constructed so as to precisely predict the forming limit that is influenced by the unique characteristics of the multilayer metallic sheets. Tensile and stretching experiment on a 15-layer multilayer metallic sheet is conducted, then the results are used to verify the effectiveness of the presented stress-strain expression, and the predicted forming limits are compared to the experimental value, resulted in a good agreement.
AB - In this paper, the forming limit of a multilayer metallic steel sheet is numerically investigated. Multilayer metallic sheets are an emerging sheet metal that is designed to achieve both high strength and enough formability, which is seriously demanded especially from the automotive industry. Unfortunately, its mechanism of enhanced ductility, fracture behavior, and forming limits have not been sufficiently studied. Therefore, a new stress-strain curve formula is constructed so as to precisely predict the forming limit that is influenced by the unique characteristics of the multilayer metallic sheets. Tensile and stretching experiment on a 15-layer multilayer metallic sheet is conducted, then the results are used to verify the effectiveness of the presented stress-strain expression, and the predicted forming limits are compared to the experimental value, resulted in a good agreement.
KW - Ductility enhancement
KW - Forming limit
KW - Multilayer metallic steel sheet
KW - Sheet metal
UR - http://www.scopus.com/inward/record.url?scp=80052775808&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=80052775808&partnerID=8YFLogxK
U2 - 10.1063/1.3623684
DO - 10.1063/1.3623684
M3 - Conference contribution
AN - SCOPUS:80052775808
SN - 9780735409491
T3 - AIP Conference Proceedings
SP - 772
EP - 779
BT - 8th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes, NUMISHEET 2011
T2 - 8th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes, NUMISHEET 2011
Y2 - 21 August 2011 through 26 August 2011
ER -