SPRINGBACK CAUSE IDENTIFICATION METHOD AND SPRINGBACK CAUSE IDENTIFICATION DEVICE

摘要

A springback cause identification method that includes: a step wherein analysis of press-forming is performed; a step wherein a springback analysis is performed on the basis of information obtained in the press-forming analysis; a step wherein the shape of a press-formed article obtained in the press-forming analysis is divided into multiple areas; a step wherein the Young's modulus in a specified direction of any of the divided areas is changed; a step wherein a springback analysis is performed on the press-formed article for which the Young's modulus has been changed; a step wherein a springback amount difference is obtained from the results of the multiple springback analyses; and a step wherein a springback cause is identified on the basis of the obtained springback amount difference.