| 摘要 |
A method for simulation of laser free form fabrication of parts and laser cladding with metal powder or wire includes absorption of laser beam at the surface exposed to metal powder particle jet, enthalpy influx into the part surface due to powder injection, 3D transient conductive heat transfer in the part, material loss due to evaporation, 3D melt pool surface shape determined by surface tension and gravity, 3D shape of the melt pool bottom, interaction of laser beam with the metal powder jet (heating of powder particles and attenuation of laser beam in powder cloud), and shape of part build up due to addition of metal material.
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