kpmi
Search
- Page Path
- HOME > Search
- Trends in Materials Modeling and Computation for Metal Additive Manufacturing
- Seoyeon Jeon, Hyunjoo Choi
- J Powder Mater. 2024;31(3):213-219. Published online June 27, 2024
- DOI: https://doi.org/10.4150/jpm.2024.00150
- 126 View
- 8 Download
-
Abstract
PDF - Additive Manufacturing (AM) is a process that fabricates products by manufacturing materials according to a three-dimensional model. It has recently gained attention due to its environmental advantages, including reduced energy consumption and high material utilization rates. However, controlling defects such as melting issues and residual stress, which can occur during metal additive manufacturing, poses a challenge. The trial-and-error verification of these defects is both time-consuming and costly. Consequently, efforts have been made to develop phenomenological models that understand the influence of process variables on defects, and mechanical/electrical/thermal properties of geometrically complex products. This paper introduces modeling techniques that can simulate the powder additive manufacturing process. The focus is on representative metal additive manufacturing processes such as Powder Bed Fusion (PBF), Direct Energy Deposition (DED), and Binder Jetting (BJ) method. To calculate thermal-stress history and the resulting deformations, modeling techniques based on Finite Element Method (FEM) are generally utilized. For simulating the movements and packing behavior of powders during powder classification, modeling techniques based on Discrete Element Method (DEM) are employed. Additionally, to simulate sintering and microstructural changes, techniques such as Monte Carlo (MC), Molecular Dynamics (MD), and Phase Field Modeling (PFM) are predominantly used.
- Technology Trend of Construction Additive Manufacturing
- Jinsu Park, Kyungteak Kim, Hanshin Choi
- J Korean Powder Metall Inst. 2019;26(6):528-538. Published online December 1, 2019
- DOI: https://doi.org/10.4150/KPMI.2019.26.6.528
- 61 View
- 0 Download
- 1 Citations
-
Abstract
PDF
The transition from “More-of-Less” markets (economies of scale) to “Less-of-More” markets (economies of scope) is supported by advances of disruptive manufacturing and reconfigurable-supply-chain management technologies. With the prevalence of cyber-physical manufacturing systems, additive manufacturing technology is of great impact on industry, the economy, and society. Traditionally, backbone structures are built via bottom-up manufacturing with either pre-fabricated building blocks such as bricks or with layer-by-layer concrete casting such as climbing form-work casting. In both cases, the design selection is limited by form-work design and cost. Accordingly, the tool-less building of architecture with high design freedom is attractive. In the present study, we review the technological trends of additive manufacturing for construction-scale additive manufacturing in particular. The rapid tooling of patterns or molds and rapid manufacturing of construction parts or whole structures is extensively explored through uncertainties from technology. The future regulation still has drawbacks in the adoption of additive manufacturing in construction industries.
-
Citations
Citations to this article as recorded by
- Technology Trend of Additive Manufacturing Standardization
Hanshin Choi, Jinsu Park
Journal of Korean Powder Metallurgy Institute.2020; 27(5): 420. CrossRef
- Technology Trend of Additive Manufacturing Standardization
First
Prev
