About this Abstract |
| Meeting |
2026 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2026)
|
| Symposium
|
2026 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2026)
|
| Presentation Title |
A Graph-Based Thermal History Simulation for Material Extrusion Additive Manufacturing |
| Author(s) |
Joseph Bartolai, Callie Zawaski, Jacob P. Morgan, Jan Petrich |
| On-Site Speaker (Planned) |
Joseph Bartolai |
| Abstract Scope |
A method for simulating thermal history of Material Extrusion (MEX) Additive Manufacturing (AM) processes using a graph-based representation of the part and an energy-based thermal history simulation. This graph-based simulation generates a thermal history prediction significantly more quickly than finite element based methods. The graph is generated directly from gcode toolpath data, with nodes representing discrete volumes of deposited material and edges connecting adjacent material volumes. Energy is added to the simulated part at a node representing the current position of the deposition nozzle. Energy is removed at boundary nodes. Applying polymer weld theory to this simulated thermal history, part performance can be predicted. These performance predictions can be used to optimize part and process design, or when combined with in-situ assessment used as part of a quality control process. Simulated thermal histories are compared to in-situ data collected with embedded thermocouples, and the accuracy of the simulation is discussed. |
| Proceedings Inclusion? |
Undecided |