Numerical Simulation and Analysis of Residual Stress in B91 Steel Deposition Using Wire Arc Additive Manufacturing
Journal Title: Precision Mechanics & Digital Fabrication - Year 2024, Vol 1, Issue 2
Abstract
A numerical model of a Gas Metal Arc Welding (GMAW)-based Wire Arc Additive Manufacturing (WAAM) process was developed using the Abaqus software, with validation performed against experimental data from existing literature. The model was employed to investigate the influence of heat input and cooling time on residual stress distribution, with particular focus on longitudinal residual stress. Minimal effect was observed with increasing heat input, whereas cooling time significantly affected stress distribution. The impact of unclamping was also examined. It was determined that for heat inputs of 4000 W and 4500 W, longitudinal residual stress decreased by approximately 10% after unclamping. In contrast, for a heat input of 5000 W, longitudinal residual stress increased by 12% following unclamping. Residual stress was found to accumulate predominantly at the interface between the substrate and the deposition wall. This study provides critical insights into the thermal and mechanical behavior of WAAM processes, contributing to a deeper understanding of stress management and control in additive manufacturing of B91 steel.
Authors and Affiliations
Atilla Savaş
Keywords
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- EP ID EP752483
- DOI https://doi.org/10.56578/pmdf010205
- Views 35
- Downloads 1
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