About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Dynamic Behavior of Materials IX
|
Presentation Title |
Triaxiality-dependence of Dynamic Failure in Additively Manufactured Steel |
Author(s) |
Jack Dinman Borg, Bernard Gaskey, Parth P Garud, Peter A Sable |
On-Site Speaker (Planned) |
Jack Dinman Borg |
Abstract Scope |
Significant progress has been made characterizing the low-rate uniaxial mechanical properties of additively manufactured metals, but much less literature exists on the dynamic properties in more complex stress states. Here, we focus on 17-4PH stainless steel, comparing tension and coupled tension-shear of as-printed additively manufactured material to a wrought and machined baseline. We use a progression of split-Hopkinson pressure bar, Taylor anvil, and high velocity plate impact to characterize the failure of the material in dynamic loading conditions across several orders of magnitude of strain rates, and to compare the progression of failure properties under differing triaxiality states. Cohesively paired simulations for each experiment were conducted using Johnson-Cook constitutive models in ANSYS and CTH for the dynamic-high rate and high velocity impact experiments respectively. Results facilitate parameterization and validation of material models necessary for engineering design of additively manufactured structural parts for complex dynamic loads.
APPROVED FOR PUBLIC RELEASE. #AFRL-2021-2219 |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Iron and Steel, Mechanical Properties |