About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Forming and Joining of Advanced Sheet Metal Materials
|
| Presentation Title |
Experimental and Numerical Characterization of the Sheared Edge Fracture Limits in Multiphase Steels |
| Author(s) |
Advaith Narayanan, Rhys Northcote, Patrick Cleary, Miguel Quinones, Dean Kanelos, Eric McCarty, Cliff Butcher |
| On-Site Speaker (Planned) |
Cliff Butcher |
| Abstract Scope |
The sheared edge fracture limits of advanced high strength steels (AHSS) can be influenced not only by the shearing process but also by the mode of edge stretching. This study investigates the formability of three AHSS grades with varying microstructures using five coupon tests that impose in-plane stretching, bending, and extrusion of the sheared edge. Digital image correlation (DIC) is employed to measure the local strains in the experiments. The impact of the test method as well as DIC virtual strain gauge length (VSG) on measured fracture strains is evaluated to isolate the effect of deformation mode and lengthscale effects. Finite-element models of the tests are also developed with different mesh sizes to examine the relationship between VSG and numerical lengthscale. Finally, the impact of mesh size on the elemental strains are assessed to guide best practices and considerations when simulating sheared edge stretching in large-scale AHSS stamping operations. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Mechanical Properties, Modeling and Simulation |