| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Powder Materials Processing and Fundamental Understanding
|
| Presentation Title |
A Multiscale Thermomechanical Model for Simulating Sintering Distortions in 3D Printed Parts with Internal Lattice Structures |
| Author(s) |
Charles Maniere, Joseph Sambasen Diatta, Sylvain Marinel |
| On-Site Speaker (Planned) |
Charles Maniere |
| Abstract Scope |
3D printed parts often utilize lattice filling strategies to optimize the strength-to-weight ratio. These parts are not homogeneous; instead, they feature a complex bioinspired shell/lattice geometry. Simulating such complex inner structures typically results in computational instabilities and long simulation times, and there is no robust solution for sintering simulations.
In this study, we circumvent this issue by employing a continuum approach that effectively simulates the complex behavior of the lattice without the need to model the intricate lattice structures directly. The lattice elementary geometry is simulated to identify the effective shear and bulk moduli for different porosities. Additionally, the effective thermal conductivity of the lattice is determined through a conductive-convective-radiative lattice simulation.
This robust thermomechanical simulation allows for the quick and efficient prediction of part behavior during firing, the development of thermal gradients, distortions, and the inherent anisotropy that significantly influence the final part dimensions. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Modeling and Simulation, Powder Materials |