|About this Abstract
||MS&T22: Materials Science & Technology
||Additive Manufacturing Modeling, Simulation, and Machine Learning: Microstructure, Mechanics, and Process
||Anisotropic Distortion Modeling during Sintering of Binder Jet Printed Parts
||Basil J. Paudel, Albert To
|On-Site Speaker (Planned)
During sintering of binder jet printed (BJP) parts, non-linear and often anisotropic distortion is seen with shrinkage values in the range of ~5-25%. The design complexity of the part combined with high temperature creep makes prediction of the final sintered geometry more challenging. In the present study, an anisotropic viscoplastic constitutive model comprising of minimum number of material parameters is developed to predict the distortion during sintering of the stainless steel 316L BJP parts. The effects of friction and gravity are considered. The model is implemented using custom subroutine within Ansys and is used to simulate the distortion. The results from the numerical analysis using the identified parameters are validated against experimental measurements. It is shown that the calibrated model predicts the anisotropic shrinkage and shape distortion reasonably well during the sintering process.