2013 年 54 巻 625 号 p. 158-162
Using a crystal orientation database, a statistical estimation of springback was conducted in this study on the by basis of statistical analysis. Both springback in bending deformation and experimental data related to the crystal orientation show significant dispersion. Therefore, a probabilistic statistical approach was established for the proper quantification of these values. Correlation was examined among the parameters F(x) of springback, F(x) of the buildup fraction to three orientations after 92° bending, and F(x) at an as-received part on the basis of the three-parameter Weibull distribution. Consequent springback estimation using a crystal orientation database yielded excellent estimates compared with experimental values. Consequently, the estimation of springback using a crystal orientation database proposed in this study suggests promising possibilities toward the high-precision bending of high-strength materials.