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- Title
An analytical temperature-based thermomechanical finite element model for process modeling of metal additive manufacturing.
- Authors
Yang, Yabin; Lin, Haofeng; Dong, Peng; Li, Yageng; Li, Quan
- Abstract
Residual stresses and deformations in metal additive manufacturing (AM) are persistent challenges. In the present study, we present a computationally efficient thermomechanical finite element (FE) model to predict the temperature and stress/strains during the AM process. The model utilizes an analytical temperature approach to estimate thermal histories. Then, the thermal field is used as the input for subsequent mechanical calculation. The accuracy of the proposed model is carefully examined by comparing the predicted results with the reported data in the literature. The computed stresses and deformations demonstrate accurate trends. A numerical tool named AM-builder, which can automatically construct the thermomechanical FE model for AM simulations, is developed to enhance practicality. A complete simulation for building a lattice-solid structure is presented. Results show that the temperature and stress/strain evolutions are effectively captured. This work provides a valuable resource for guiding the AM experiments to optimize the residual stresses and deformations.
- Subjects
RESIDUAL stresses; STRAINS & stresses (Mechanics); FINITE element method; MANUFACTURING processes; TEMPERATURE
- Publication
Journal of Mechanical Science & Technology, 2025, Vol 39, Issue 1, p143
- ISSN
1738-494X
- Publication type
Academic Journal
- DOI
10.1007/s12206-024-1214-6