Abstract
As virtual manufacturing in additive manufacturing (AM) becomes more mature, the benefits of using this technology increases. Virtual manufacturing simulations often capture only one step in the AM process chain decoupled from the subsequent steps. However, all steps in the process chain influence the final product in their own way. Therefore, this study focusses on the development of a virtual manufacturing framework to perform sequential process simulations of the complete process chain for AM parts. This framework can ultimately be used to obtain insights on the effect of additional processes or process variations on the final product. In this study, the framework is used to obtain insights on the effect of residual stress due to the laser metal deposition (LMD) process on the fatigue life of the final part. To this end, a calibration and validation of a part-scale LMD process simulation is performed to obtain deformations and residual stresses. This is followed by a heat treatment simulation to determine the effect of post heat treatment on the deformation and residual stresses of the final part. By combining the residual stress field with fatigue loads, the effect of different process steps on the fatigue life is investigated.
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