1 option
Material Characterization of Newly-Developed Advanced High Strength Steels for Prediction of Crash Performance JFE Steel Corporation
- Format:
- Book
- Conference/Event
- Author/Creator:
- Sato, Kentaro, author.
- Conference Name:
- WCX SAE World Congress Experience (2025-04-08 : Detroit, Michigan, United States)
- Language:
- English
- Physical Description:
- 1 online resource cm
- Place of Publication:
- Warrendale, PA SAE International 2025
- Summary:
- New highly ductile advanced high strength steel (AHSS) grades with tensile strength greater than 980 MPa have been developed with the aim of achieving a combination of high strength and excellent formability. The new jetQTM-Family [1, 2] offers high local and global ductility, which is expected to contribute to the improvement of vehicle crash performance.For the reliable design and management of vehicle crash performance, material modeling, including work hardening behavior and material failure strain, plays an important role in numerical simulation. Especially, the accuracy of material failure prediction is important for the development of crash performance.In this study, the fracture behaviors of 980jetQTM, 1180jetQTM, and conventional Dual-Phase (DP) steels are investigated through simple tensile and V-bending fracture tests incorporating experimental-numerical hybrid ductile fracture analysis. Based on the experimental results, the ductile fracture parameters in the Hosford-Coulomb fracture model [3] are determined for numerical crash simulation.To investigate the validity of the calibrated ductile fracture model, axial crushing tests of hat-shaped square columns are performed for the 980 MPa grade. Numerical simulations of axial impact are also performed by ANSYS LS-DYNA [4] under the same conditions as in the experimental tests, and three-point bending tests are carried out for the 1180 MPa grade to simulate side crash deformation. Both the numerical simulations of the axial crash and the three-point bending crash show good agreement with the experimental results.The developed material model can express the excellent local elongation performance of the jetQ materials. The crash simulation with the material model shows good crash performance with a low risk of fracture during crash deformation
- Notes:
- Vendor supplied data
- Publisher Number:
- 2025-01-8220
- Access Restriction:
- Restricted for use by site license
The Penn Libraries is committed to describing library materials using current, accurate, and responsible language. If you discover outdated or inaccurate language, please fill out this feedback form to report it and suggest alternative language.