作者
Xu Song, Stefanie Feih, Wei Zhai, Chen-Nan Sun, Feng Li, Raj Maiti, Jun Wei, Yangzhan Yang, Victor Oancea, Leon Romano Brandt, Alexander M Korsunsky
发表日期
2020/8/1
期刊
Materials & design
卷号
193
页码范围
108779
出版商
Elsevier
简介
Due to rapid solidification of melted powders in metal additive manufacturing processes and high thermal gradients, large residual stresses are created in the build. This can lead to undesired distortions as well as crack initiation. The main aim of this work is to optimize the Additive Manufacturing (AM) process parameters by finite element modelling of the entire process to minimize the resulting residual stresses and distortions. We focus on two most important metal AM processes: (a) Laser Direct Energy Deposition (LDED) and (b) Selective Laser Melting (SLM). The ABAQUS AM module is employed to simulate both processes as it provides an automated interface allowing the user to define event data, such as element activation and heat input, as a function of both position and time to achieve process simulation of complex 3D parts. For the LDED processes, thin wall components are simulated, and residual …
引用总数
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