New Method to Evaluate and Compensate 3D-Springback

Ito, Koichi; Kondou, Tetsuya; Uemura, Gen; Mori, Naomichi

doi:10.1063/1.2741017

Cited by 2 publications

(1 citation statement)

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“…Therefore, it is urgently required to establish a methodology to reduce the amount of twist by studying the mechanism by which it is generated. For this purpose, several studies have been carried out in which it was attempted to clarify the cause of twist through experiments [1] or by evaluating twist torque at the bottom dead point through numerical procedures [2,3]. This study concerns the twist occurring in curved hat channel products, and a numerical procedure to analyze the source of twist is proposed.…”

Section: Introductionmentioning

confidence: 99%

Investigation of twist in curved hat channel products by elastic-plastic finite element analysis

et al. 2010

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This study concerns twist phenomena occurring in curved hat channel products and aims to clarify the causes of twist using physical quantities obtained by finite element analysis. Several drawing heights were examined. We evaluated the torque around the longitudinal axis, which can be regarded as the driving force of the twist. In addition, transitions of the torque during the process of tool removal were analyzed. After removing the die and blank holder, the twist torque in models with larger drawing heights became negative, accounting for the positive twist, which occurs after punch and pad removal. On the other hand, the twist torque in models with smaller drawing heights remained positive, accounting for the negative twist. Such analyses of the transition of twist torque provide useful information when considering measures for reducing twist.

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Section: Introductionmentioning

confidence: 99%