SPRINGBACK AMOUNT DISCREPANCY FACTOR PORTION IDENTIFICATION METHOD AND APPARATUS

• Main Authors: OGAWA, Takeshi, URABE, Masaki, IIZUKA, Eiji
• Format: Patent
• Language: English; French; German
• Published: 14.08.2024
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; PERFORMING OPERATIONS; PHYSICS; PRESSES; PRESSES IN GENERAL; PUNCHING METAL; TRANSPORTING; WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL

Provided are springback amount discrepancy factor portion identification method and apparatus for identifying a portion that is a factor causing a discrepancy in springback amount between a press-formed product and a CAE analysis.The present invention 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 of a springback analysis, a stress difference distribution setting step of setting a stress difference distribution between an analysis driving stress distribution and a formed product driving stress distribution to the shape of a formed product at the bottom dead center, a stress difference springback amount acquisition step of acquiring a springback amount based on the stress difference distribution, a changed stress difference springback amount acquisition step of acquiring a springback amount by changing a value in a region of the stress difference distribution, and a springback amount discrepancy factor portion identification step of identifying a portion that is a factor causing a discrepancy in springback amount by comparing the acquired springback amounts.