Method and apparatus for confirming springback countermeasure effect of press-formed product

摘要

The present invention provides a method and apparatus for easily and clearly identifying the effect of a countermeasure for reducing springback in press-forming. According to the invention, the method for identifying the effect of a countermeasure for reducing springback includes calculating a pre-release residual stress distribution in a press-formed part under a preset press-forming condition, calculating an after-release residual stress distribution in the press-formed part released from the die on the basis of the result of calculation, calculating the difference between the residual stress distributions on the basis of these results of calculation, calculating the difference between residual stress distributions similarly obtained under a changed press-forming condition, calculating a variation in the residual stress distribution caused by changing the press-forming condition on the basis of these differences between the residual stress distributions, and displaying the variation in contour plots.