Springback and compensation of bending for hydroforming of advanced high-strength steel welded tubes

Han, Cong; Feng, Hao; Yuan, Shijian

doi:10.1007/s00170-016-9319-4

Cited by 12 publications

(1 citation statement)

References 15 publications

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“…Hence, a springback compensation method for tool design is essential for CAF applications. Springback can be considered as an elastic recovery occurred during unloading [3] and has a significant effect on dimensions of formed products in many sheet metal forming processes, such as deep drawing [4], stretch-bending [5] and hydroforming [6]. Both analytical and finite element (FE) methods have been used to predict springback for various metal forming processes, which have been reviewed by Wagoner et al [7].…”

Section: Introductionmentioning

confidence: 99%

An accelerated springback compensation method for creep age forming

Rong

Shi

et al. 2018

Int J Adv Manuf Technol

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Springback compensation is essential for tool design in creep age forming (CAF) process. In this study, a new accelerated springback compensation method integrating springback mechanism of a plate with creep-ageing behaviour of materials has been developed for CAF tool design to manufacture both singly and varyingly curved products. Springback compensation curves that relate the objective shapes and springback compensated shapes by their curvature, stress and strain states have been established, based on the numerical solution of springback behaviour of CAF process. For singly curved products, a one-step springback compensation method is proposed with reference to the springback compensation curves, and its effectiveness has been demonstrated by CAF test with a peak-aged aluminium alloy AA6082-T6. For products with varying curvatures, an accelerated method is developed for CAF tool design by integrating springback compensation curves with finite element (FE) assisted displacement adjustment techniques. The new accelerated method can significantly improve the tool design efficiency for CAF process when compared with conventional displacement adjustment techniques and has been verified by CAF manufacture of a varyingly curved product with AA6082-T6 material. The new accelerated springback compensation method developed in this study can be used for efficient tool design for CAF process of various products.

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