A STUDY ON DETERMINING MATERIAL PARAMETERS TO PREDICT STRESS-STRAIN CURVES FOR TENSION/COMPRESSION TENSILE TEST OF DP590 SHEET MATERIAL
This paper presents the predict more correctly stress-strain curves during tension/compression testing of high streng steel DP590 sheet material, the isotropic and kinematic hardening models were combined by the new way in order to determine the material parameters before inputting to FEM simulation software, namely ABAQUS/explicit 6.13. The tension/compression tensile test was first performed by using MTS 810 tensile test machine. The isotropic and kinematic hardening models were then used to determine material parameters for FEM simulation utilizing experimental data. After that, the comparison between tension/compression experiment and simulation results of DP590 sheet material were depicted to show the big gap of previous models. Finally, the new method to obtain the new material parameters of tension/compression test for DP590 sheet material were proposed based on the combined isotropic/kinematic hardening model in order to improve the quality of prediction during tension/compression test. The final simulation results were also compared with experiments, isotropic/ kinematic hardening models seperately and proved the good prediction of proposed model.
Nguyen Duc-Toan, Kim Young-Suk, Jung Dong-Won, “Coupled Thermo-Mechanical FE Study to Improve Press Formability of a Camera shape for Magnesium Alloy Sheet AZ31B”. Metals and Materials International, 2012, 18(4), pp. 583–595.
Nguyễn Đức Toàn, Phạm Quốc Tuấn, Nguyễn Đình Thành, “Nâng cao chất lượng tạo hình uốn ống đồng sử dụng phân tích, mô phỏng bằng phương pháp phần tử hữu hạn,” Tạp chí khoa học và công nghệ, 2014, 98, tr. 29-33.
Nguyen Duc-Toan, Banh Tien-Long, “NUMERICAL ANALYSIS TO DETERMINE DIE RADIUS AND BENDING ANGLE IN ROLL-BENDING PROCESS FOR SHEET ATERIAL, JOURNAL OF SCIENCE & TECHNOLOGY,” 2012, 88, pp. 84-89.
E. Voce, J Inst Met 74, 1978, pp. 537-562.
P.J. Amstrong, C.O. Frederick, “A Mathematical Representation of the Multiaxial Bauschinger Effect,” G.E.G.B. Report RD/B/N 731, 1966.
J.L. Chaboche, “Time independent constitutive theories for cyclic plasticity”. Int J Plast. 2, 149-188, 1986.