Numerical modelling of planned corner deposition in 3D concrete printing

• Autorzy: El Abbaoui K. , Al Korachi I. , Mollah M. T. , Spangenberg J.

Identyfikatory

DOI

10.5604/01.3001.0053.8488

• Języki publikacji: EN

Abstrakty

EN

Purpose: Analysis of different path planning strategies and the effects of changing printhead direction in the geometrical conformity and the process precision around 90° corner in order to enable a simple and cost-effective way of facilitating the determination of an optimal printing mode for fast and accurate print corners in 3D concrete printing. Design/methodology/approach: The material flow is characterized by a viscoplastic Bingham fluid. The printhead moves according to a prescribed speed to print the trajectory. The model solves the Navier-Stokes equations and uses the volume of fluid (VOF) technique. The acceleration steps and jerk (j) carry out the direction change. A smoothing factor is provided to smooth the toolpath. Several simulations were performed by varying the smoothing factor and jerk. Findings: Overfilling at the sharp corner was found when the printhead velocity was kept constant while extruding mortar at a fixed extrusion velocity; however, proportional extrusion velocity with the printhead motion has improved the quality of the corner. Otherwise, a slight improvement in the corner shape related to applying a jerk was found. Research limitations/implications: The Computational Fluid Dynamics (CFD) model could take an important amount of computing time to solve the problem; however, it serves as an efficient tool for accelerating different costly and time-consuming path planning processes for 3D concrete printing. Smaller angles and tilted printhead positions should be numerically and experimentally investigated in future research. Practical implications: The developed CFD model is suited for executing parametric studies in parallel to determine the appropriate printing motion strategy for each trajectory with corners. Originality/value: Computational Fluid Dynamics investigation of the path planning strategy for printing trajectory with a right-angle corner in 3D concrete printing.

Słowa kluczowe

EN

3D concrete printing; CFD modelling; path-planning; corner precision; mortar extrusion

PL

drukowanie 3D betonu; modelowanie CFD; planowanie ścieżek; precyzja narożników; wytłaczanie zaprawy

• Wydawca: International OCSCO World Press
• Czasopismo: Archives of Materials Science and Engineering
• Rocznik: 2023
• Tom: Vol. 121, nr 2
• Strony: 71--79
• Opis fizyczny: Bibliogr. 29 poz.

Twórcy

autor

El Abbaoui K.

• Euromed Polytechnic School, Euromed Research Center, Euromed University of Fez, Route de Meknès (Rond-point Bensouda), 30000 Fès, Morocco

• https://orcid.org/0000-0002-5007-7714

autor

Al Korachi I.

• Euromed Polytechnic School, Euromed Research Center, Euromed University of Fez, Route de Meknès (Rond-point Bensouda), 30000 Fès, Morocco

autor

Mollah M. T.

• Department of Civil and Mechanical Engineering, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark

autor

Spangenberg J.

• Department of Civil and Mechanical Engineering, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark

Bibliografia

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