| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Response of Materials Investigated through Novel In-situ Experiments and Modeling
|
| Presentation Title |
Uncertainties in Estimating Hardening Model Parameters and Their Influence on the Flow Stress and the Hole Expansion Tests of Dual-Phase (DP600) Steel Specimens |
| Author(s) |
Dilip Kumar Banerjee, Kali Prasad, Deepak Kumar, Hariharan Krishnaswamy |
| On-Site Speaker (Planned) |
Dilip Kumar Banerjee |
| Abstract Scope |
Hardening laws are used to model deformation behavior in forming studies. A statistical approach was used to estimate the influence of Swift model parameters variation on stress-strain data using literature data and tensile tests conducted. Uncertainties in flow stresses were estimated with Monte Carlo technique. A sensitivity analysis was performed to determine the most sensitive parameters. Sensitivity coefficients of the Swift model parameters vary with strain. Computed hardening curves were used for FEA study of hole expansion tests (HET) of DP600 steel specimens. The effects of the material property variation on progressive sheet thinning rates were estimated with means and standard deviations for determining appropriate statistical limits. FEA predictions were compared with measured data from HET using specimens with holes fabricated from drilling and boring processes. A reasonable agreement was achieved. Furthermore, the experimental values of the final sheet thicknesses were found to lie within the statistical limits from FEA. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, Shaping and Forming, Modeling and Simulation |