Dynamic Geometric Modeling for Directed Energy Deposition Process

• DOI: 10.1115/msec2024-125486
• Publication Date: 2024-08-20T17:56:24Z
• Authors: Wenze Zhang; Siqi Chen; Boge Dong; Yuanzhi Chen; Xiaoke Deng; Molong Duan; Kai Tang
• Keywords: Fused Deposition Modeling; Sigmoid function; Deposition

Abstract Directed energy deposition (DED) is a prominent additive manufacturing technology for metal parts. High-fidelity simulation can reconstruct the DED process but typically too computationally complex control and planning. On other hand, experimental-based models only consider static relationship between printed bead geometry printing parameters, leading to significant deviations. To address this issue, we propose dynamic model that correlates such as rate moving speed, with geometry, width height of bead. A mirrored sigmoid was developed fit profile bead, nonlinear time-invariant system constructed simulate extracted geometry. This comprises linear respectively handles high-frequency signal increments decomposed from whole input signals. Experimental results have verified effectiveness proposed method in predicting reducing