Simulation of Temperature Field and Deformation in Laser Arc Hybrid Heat Source Additive Manufacturing
Using the Simufact Welding software,the temperature field,stress field and deformation of the laser arc hybrid heat source additive manufacturing process were simulated,and the transverse,longitudinal and interlayer equivalent stress and deformation laws of different cladding layers along with the influence of process parameters on deformation were analyzed through experiments.The results show that from the lateral physical field,the deformation of the center and both sides of the substrate after cooling is large,and the overall shape is"W".From the longitudinal physical field,it can be seen that the local stress reduction phenomenon occurs near the heat source,and the maximum deformation occurs on the side far from the end heat source.According to the analysis of the laws of interlayer physical field,the equivalent stress is concentrated in the bottom layer,and due to the accumulation of deformation,the deformation is concentrated in the top layer,and the temperature part is remelted three times.
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