Modeling temperature gradient of printed ABS filament in ۳D Printer

In this research, a computational model has been used to simulate fused filament fabrication (FFF),which is often called fused deposition modeling (FDM). The appropriate equations are solved on aregular stationary grid and investigated at the boundary between polymer and air. A filament madeof Acrylonitrile butadiene styrene (ABS) material with a certain diameter of the nozzle, which wasprinted vertically from the head of the nozzle and with a regular shape of the filament, includes theviscoelastic effect. The flow of viscoelastic polymer filament from the nozzle, on a substrate orpreviously printed filaments, has a temperature gradient, and the cooling of the filament will bechecked. In this research, the gradient temperature of the printed filament during different injectionshas been investigated. This situation helps us to calculate the temperature of the injected filament(Tinj) and use it in the next steps to overlap the layers. To model the temperature gradient, mass andenergy conservation equations are used. In this process, the injection speed (u) will have animportant effect on the period of time the filament stays at the ambient temperature (Tair), whichhas a direct effect on the temperature of the injected filament.

کلیدواژه ها:

Modeling ، ۳D Printer ، Numerical Solution ، ABS