fe5b98b8a5-p-1887.pdf - Symmetric boundary conditions are used for both the workpiece and the shots 300 Sides that are perpendicular to axis 1 can not

fe5b98b8a5-p-1887.pdf - Symmetric boundary conditions are...

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120 Symmetric boundary conditions are used for both the workpiece and the shots. Sides that are perpendicular to axis 1 can not move in axis 1 direction. Sides are perpendicular to axis 2 can not move in that direction either. The material model used in multi-shot modeling is the same as in single shot model. 5.4.2 Model validation with experiment data To validate the proposed model, simulations are performed under the same conditions as Torres et al. used in their experiment. Figure 5.18 shows the contour plot of the predicted residual stress field. It can be seen from the figure that the 16-shot model gives a fairly uniform residual field. The numerical predictions of residual stress profile are compared with the experimental data reported by Torres and Voorwald [2002] and presented in Figure 5.19. As the figure indicates, the numerical results agree with the experimental results very well. The slight differences between the two might be contributed to measurement, material model and the randomness of the process.
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