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 |
Impact of Weld-Bead Profile Approximations on Thermal Finite Element Analysis for Wire-Arc Directed Energy Deposition |
Author(s) |
Jeffery Logan Betts, Ryan Stokes, Matthew Priddy |
On-Site Speaker (Planned) |
Jeffery Logan Betts |
Abstract Scope |
Finite element analysis (FEA) of wire arc directed energy deposition (arc-DED) traditionally assumes an approximate weld bead profile. However, there are multiple methods to determine the approximate weld profile, and the differences between them are not known. The overall bead width and height is the most common approximation, but often leads to overestimating the cross-sectional area. Instead this work utilizes thermal FEA with the Goldak Double Ellipsoidal Heat Source to predict the thermal history, and investigate the effects of varying weld-bead shape, height, width, and cross-sectional area to determine the approximate weld-bead profile. Optical profilometry was utilized to measure a series of bead-on-plate welds using ER70S-6 and cold metal transfer (CMT) to inform the approximate weld bead profile. Understanding the relationship between the weld-bead profile and predicted thermal history is critical to improve the accuracy and predictive capabilities of current arc-DED FEA frameworks. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |