About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
In Tribute to Robert Wagoner: A Pioneer in Metal Forming and Constitutive Modeling
|
| Presentation Title |
Influence of Complex Strain Paths on Springback in AA 6016-T4: Insights From Experiments and Crystal Plasticity Modeling |
| Author(s) |
Michael P. Miles, David Fullwood, Marko Knezevic, Md Zahidul Sarkar, Dane Sargeant, Rishabh Sharma |
| On-Site Speaker (Planned) |
Michael P. Miles |
| Abstract Scope |
The effect of strain path changes in AA 6016-T4 sheet on material ductility and springback was investigated, using backstress, dislocation densities and slip system activities to explain the observed behaviors. Pre-strains in uniaxial, biaxial and plane-strain tension were first applied to the sheets using Marcinak tooling in a hydraulic press, or by straining large tensile specimens. After pre-straining the sheets to different levels of effective strain, small bend specimens were cut from the pre-strained sheets. The bend specimens were then formed in v-shaped dies by both bottom bending (88˚ ) and air bending to various angles (100˚, 85˚, 70˚). A CPFE–EPSC model with phenomenological backstress component in hardening law predicted springback magnitudes across different pre-strain paths, pre-strain levels, and imposed bend angles. It was observed that the more significant the strain path change, the greater the influence of backstress on model accuracy, owing to the activation of new slip systems. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Aluminum, Shaping and Forming, Other |