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Research on Forming Limit Stress Diagram of Advanced High Strength Dual-Phase Steel Sheets.
- Source :
-
Materials (1996-1944) . Jul2023, Vol. 16 Issue 13, p4543. 20p. - Publication Year :
- 2023
-
Abstract
- The Forming Limit Stress Diagram (FLSD) can accurately describe the forming process of high-strength steel. However, obtaining FLSD is relatively difficult. In order to predict fracture in advanced high-strength dual-phase (DP) steels, limit maximum and limit minimum principal strains of sheet were obtained through multiple sets of test and simulation. Two material parameters, strength coefficient K and hardening exponent n are introduced into the FLSD function which is established by the strain-stress transformation function. The function shows that the k-value determines the value of the maximum principal stress, while the n-value affects the curvature of the curve. Verification of correctness by testing and simulation to within 10% accuracy. This paper explores a new approach to FLSD research based on material properties, which can expand the application scope of FLSD. [ABSTRACT FROM AUTHOR]
- Subjects :
- *DUAL-phase steel
*HIGH strength steel
*SHEET-steel
*STRAINS & stresses (Mechanics)
Subjects
Details
- Language :
- English
- ISSN :
- 19961944
- Volume :
- 16
- Issue :
- 13
- Database :
- Academic Search Index
- Journal :
- Materials (1996-1944)
- Publication Type :
- Academic Journal
- Accession number :
- 164917822
- Full Text :
- https://doi.org/10.3390/ma16134543