A three dimensional model for direct laser metal powder deposition and rapid prototyping
Source abstract
Abstract
A three-dimensional model for direct laser metal powder deposition process and rapid prototyping is developed. Both numerical and analytical models are addressed. In the case of numerical modeling, the capabilities of ANSYS parametric design language were employed. The model calculates transient temperature profiles, dimensions of the fusion zone and residual stresses. Model simulations are compared with experimental results acquired on line using an ultra-high shutter speed camera which is able to acquire well-contrasted images of the molten pool, and off-line using metallographical and x-ray diffraction analyses. The experiments showed good agreement with the modeling. The results are discussed to provide suggestions for feedback control and reduction of residual stresses.
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Research context
OpenAlex topics: Additive Manufacturing Materials and Processes · Metal and Thin Film Mechanics · Surface Roughness and Optical Measurements
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References (19)
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