The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 28, 2026
Filed:
Apr. 22, 2020
Jfe Steel Corporation, Tokyo, JP;
JFE STEEL CORPORATION, Tokyo, JP;
Abstract
A method and device for specifying a portion causing a discrepancy in springback amount between CAE analysis and an actual formed product. The method includes a formed-product-driving-stress-distribution acquisition step of acquiring a driving stress distribution of a press-formed product, an analysis-driving-stress-distribution acquisition step of acquiring a driving stress distribution in springback analysis, a formed-product springback-amount acquisition step of acquiring a springback amount based on the formed product driving stress distribution, a stress-substituted-springback-amount acquisition step of substituting a value of analysis driving stress in a region with a value of formed product driving stress in a corresponding region and acquiring a springback amount based on a stress substituted distribution obtained by the substitution, and a springback-amount-discrepancy-causing-portion specifying step of finding a difference between the formed product springback amount and the stress substituted springback amount and specifying, based on the difference found, a portion causing a discrepancy in springback amount.