Abstract
3D printing technology provides a new technical approach for the preparation of complex-type gun propellants. The filling pattern chosen for printed gun propellants has an impact on the mechanical strength of gun propellants. In this paper, three filling patterns were used to print the gun propellant samples. There is axial, radial and 45° straight filling pattern. The tensile and compressive strength of samples with different filling patterns were compared and studied. The result shows that the tensile strength of samples printed with 45° straight filling pattern is the largest, and the compressive strength of samples printed with the radial filling pattern is the largest. The filling pattern has a significant effect on the mechanical strength of 3D-printed gun propellants.
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