|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Pioneers in Additive Manufacturing
||A-96: FEM Modeling of Steel Additive Manufacturing Using Laser Hot-Wire Process
||Zhenguo Nie, Gang Wang, James D. McGuffin-Cawley, Badri Narayanan, Yiming (Kevin) Rong
|On-Site Speaker (Planned)
The laser hot-wire (LHW) process has the potential to deposit material at high rates using low laser power. Numerical simulation of LHW was conducted to obtain the temperature, stress and strain fields, and the distortion. The outstanding features for numerical simulation are additive geometry and numerous analysis steps. The INP files of ABAQUS are compiled by a Matlab program because of a great deal of step and element definitions. Temperature and distortion were both measured to validate the FEA model. The verification result indicates that the model is accurate. Calculations show that the maximum residual stress is located in the junction between the deposit and substrate. The junction area becomes the most likely crack position. The processing window of stable hot-wire deposition was mapped via numerical computation method. It is shown that the stable deposition has top and bottom limitations under a certain current intensity and wire feed speed.
||Planned: Supplemental Proceedings volume