Theses and Dissertations
Advisor
Priddy, Matthew
Committee Member
Betts, J.
Committee Member
Stone, Tonya
Date of Degree
8-7-2025
Original embargo terms
Embargo 2 years
Document Type
Graduate Thesis - Open Access
Major
Mechanical Engineering
Degree Name
Master of Science (M.S.)
College
James Worth Bagley College of Engineering
Department
Michael W. Hall School of Mechanical Engineering
Abstract
Finite element (FE) thermomechanical models for wire-arc directed energy deposition (DED) have been primarily focused on small test geometries despite the target application for this process being components greater than 50 lbs. Previously, models have omitted the build platform assembly (BPA), instead relying on artificial boundary conditions that require iterative calibration to obtain accurate results. As parts increase in scale, boundary conditions may not sufficiently capture the evolving modes of heat transfer. This work investigates the effect of BPA components on the thermal response of deposited parts. A series of FE thermal simulations is performed to analyze heat transfer through the assembly for five geometries ranging from 0.025 to 5.5 lbs. Building off these findings, the proposed BPA model is experimentally validated with a 13-lb ER70S-6 component. Overall, this study aims to improve FE thermomechanical modeling of wire-arc DED to support the advancement of this technology, particularly for scaling up to sizeable components.
Recommended Citation
Cummings, Kimberly Alyssa, "Improved part-scale FE thermal modeling of wire-arc DED via incorporation of the build platform assembly" (2025). Theses and Dissertations. 6632.
https://scholarsjunction.msstate.edu/td/6632
