About this Abstract |
Meeting |
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
Symposium
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2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
Presentation Title |
Ballistic Performance Predictions of As-built Additively Manufactured Stainless Steel |
Author(s) |
David Pervis Failla, Jean Santiago-Padilla, Matthew Priddy |
On-Site Speaker (Planned) |
David Pervis Failla |
Abstract Scope |
Residual stress predictions can help with the development of as-built additively manufactured (AM) parts for collision applications by highlighting stress localizations due to thermal cycling, determining areas of premature failure, and part manufacturability. The current work leverages a sequentially coupled thermomechanical finite element (FE) framework to predict the effects of residual stresses on the ballistic performance of as-built AM 316L stainless steel square coupons. A moving heat source and progressive element activation scheme, mimicking the laser-powder bed fusion (L-PBF) process, dictate the nodal thermal history of the plate. Sequentially, a mechanical analysis predicts the residual stress state by leveraging the output thermal history. Finally, the ballistic impact FE simulation leverages the calculated residual stress state of the as-built component to predict its effect on the residual velocity of the penetrator and energy absorption of the target. The final ballistic predictions are compared to experimental results to examine model accuracy. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |