Table of Contents
J. Manuf. Mater. Process., Volume 1, Issue 1 (September 2017)
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Cover Story (view full-size image) Direct Metal Deposition (DMD) is an additive manufacturing (AM) process capable of producing large [...] Read more. Direct Metal Deposition (DMD) is an additive manufacturing (AM) process capable of producing large components using a layer by layer deposition of molten powder. DMD is increasingly investigated due to its higher deposition rate and the possibility to produce large structural components specifically for the aerospace industry. In this study, two methods to predict temperature evolution during the DMD process are introduced based on analytical and finite element methods. The objective is to compare these methods to experimental results and to provide more insights about their capabilities to predict accurately the temperature gradient, the cooling rate, and the melt pool geometry. A comparison of the computational time is also provided. Based on the results of the investigation, it appears that the analytical method provides an effective and accurate method to understand the influence of process on the workpiece temperature.View this paper