TY - GEN
T1 - A user-friendly 3D yield function for steel sheets and its application
AU - Yoshida, Fusahito
AU - Tamura, Shohei
AU - Uemori, Takeshi
AU - Hamasaki, Hiroshi
PY - 2011
Y1 - 2011
N2 - A 6th-order polynomial type 3D yield function, which has a high flexibility of describing anisotropic behavior of steel sheets is proposed. A user-friendly scheme of material parameter identification for the model, where only limited experimental data of r-values and yield stresses in three directions ( r 0, r45, r90 and μ0, μ45 ,μ90) plus equi-biaxial yield stress (μx=μy=μb) are needed, is presented. The accuracy of this yield function is verified by comparing the numerical predictions with the corresponding experimental data on planar anisotropy of r-values and flow stress directionality, as well as the shape of yield loci, on several types of steel sheets (high r-value IF steel and high strength steel sheets of 440-980MPa TS levels). The advantage of this model is demonstrated by showing a numerical simulation of hole-expansion test.
AB - A 6th-order polynomial type 3D yield function, which has a high flexibility of describing anisotropic behavior of steel sheets is proposed. A user-friendly scheme of material parameter identification for the model, where only limited experimental data of r-values and yield stresses in three directions ( r 0, r45, r90 and μ0, μ45 ,μ90) plus equi-biaxial yield stress (μx=μy=μb) are needed, is presented. The accuracy of this yield function is verified by comparing the numerical predictions with the corresponding experimental data on planar anisotropy of r-values and flow stress directionality, as well as the shape of yield loci, on several types of steel sheets (high r-value IF steel and high strength steel sheets of 440-980MPa TS levels). The advantage of this model is demonstrated by showing a numerical simulation of hole-expansion test.
KW - Anisotropy
KW - Sheet metal forming
KW - Yield function
UR - http://www.scopus.com/inward/record.url?scp=80052707843&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=80052707843&partnerID=8YFLogxK
U2 - 10.1063/1.3623689
DO - 10.1063/1.3623689
M3 - Conference contribution
AN - SCOPUS:80052707843
SN - 9780735409491
T3 - AIP Conference Proceedings
SP - 807
EP - 814
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 -