Przedstawiono wyniki badań właściwości wytrzymałościowych modeli wydrukowanych w technologii RepRap w zależności od parametrów druku, stopnia wypełnienia modeli oraz rodzaju wypełnienia. Zwrócono uwagę na wpływ ułożenia przestrzennego wypełnienia – na przykładzie typu szkieletowego nazywanego plastrem miodu. Uzyskane wyniki stanowią podstawę wyboru wymaganych parametrów wydruku, które wpływają na wytrzymałość modelu.
EN
The paper presents results of strength tests conducted on models produced on 3D printer in RepRap technology under conditions of different process parameters, or different fill up materials or their layout. Attention is also paid to the fill extension by the example of skeleton or honeycomb structure. Results of the work should provide for a reliable reference in selection of the process operating conditions and parameters to ensure desired strength of the model.
Fused Deposition Modeling (FDM) is a widely used 3D printing technology that can create a diverse range of objects. However, achieving the desired mechanical properties of printed parts can be challenging due to various printing parameters. Residual stress is a critical issue in FDM, which can significantly impact the performance of printed parts. In this study, we used Digimat-AM software to conduct numerical simulations and predict residual stress in Acrylonitrile Butadiene Styrene (ABS) material printed using FDM. We varied six printing parameters, including printing temperature, printing speed, and infill percentage, with four values for each parameter. Our results showed that residual stress was positively correlated with printing temperature, printing speed, and infill percentage, and negatively correlated with layer thickness. Bed temperature did not have a significant effect on residual stress. Finally, using a concentric infill pattern produced the lowest residual stress. The methodology used in this study involved conducting numerical simulations with Digimat-AM software, which allowed us to accurately predict residual stress in FDM-printed ABS parts. The simulations were conducted by systematically varying six printing parameters, with four values for each parameter. The resulting data allowed us to identify correlations between residual stress and printing parameters, and to determine the optimal printing conditions for minimizing residual stress. Our findings contribute to the existing literature by providing insight into the relationship between residual stress and printing parameters in FDM. This information is important for designers and manufacturers who wish to optimize their FDM printing processes for improved part performance. Overall, our study highlights the importance of considering residual stress in FDM printing, and provides valuable information for optimizing the printing process to reduce residual stress in ABS parts.
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