Abstract
The distribution of residual stresses has a significant effect on fatigue life in milling process. In previous works, the predicted model of residual stresses was focusing on orthogonal cutting, while milling residual stresses is seldom reported. An analytical model for the generation of residual stresses induced by complex surface milling is proposed. Estimates of the mechanical stresses induced by the milling process have been determined through contact mechanics and the geometric transformations within the part. The temperature field of workpiece induced by milling is predicted by analytical model. Estimates of the residual stresses were obtained using an elastic-plastic model and a relaxation procedure. The proposed model is validated with milling experiments. This work can be further applied to improve surface integrity of workpieces by machining parameters optimization.
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