| About this Abstract |
| Meeting |
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Symposium
|
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Presentation Title |
FE Predictions of Residual Stresses in L-PBF Generated Ti-6Al-4V NIST Bridges |
| Author(s) |
Caitlin Luke, Courtney Morgan-Barnes, Brad Sampson, Haley Doude, Matthew W. Priddy |
| On-Site Speaker (Planned) |
Caitlin Luke |
| Abstract Scope |
The ability to characterize and predict residual stresses in parts produced via additive manufacturing (AM) methods is vital in both the understanding and performance of as-built structures. Currently, there is a need for improving the modeling and prediction of residual stresses in as-built samples for the purposes of toolpath optimization. This work studied the residual stresses in laser powder bed fusion (L-PBF) structures with a sequentially coupled thermo-mechanical finite element (FE) modeling framework for the prediction of residual stresses in as-built Ti-6Al-4V NIST bridges. Nine variations of layer thickness, scan strategy, and scan speed were examined for parameter variation effects on residual stress formation. Thermal history data collected from the experimental builds was used to perform thermal calibration/validation of the FE models. This investigation of NIST bridge residual stress formation will provide greater insight to the process-property relationship for Ti-6Al-4V L-PBF structures. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |