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Increase in packing density during multi-layer powder spreading: An experimental and numerical study
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DOI：10.1016/j.powtec.2026.122460.png)
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Abstract
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• First report of the existence of an increase in powder bed packing density occurring at higher layer number (5 to 10). • Large-scale multi-layer powder spreading DEM simulations for metal additive manufacturing. • The DEM results show that a significant amount of powder is removed from the powder bed during the spreading of subsequent layers.
Keywords:
Multi-layer powder spreading
Discrete element method
Additive manufacturing
Powder deposition mechanism
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