Effect of annealing, thickness ratio and bend angle on springback of AA6061-T6 with non-uniform thickness section

Adnan, M. F.; Abdullah, Ahmad Badri; Samad, Z.

doi:10.1051/matecconf/20179001002

Cited by 2 publications

(4 citation statements)

References 12 publications

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“…The Taguchi method is used to investigate the spring back characteristics of the AA6061-alloy strip with “nonuniform thickness.” The effects of thickness ratio, bend angle and alignment parameters are investigated. The results show that bend angle is the most important parameter regarding the thickness ratio and the specimen arrangement throughout the bending process (Adnan et al , 2017). Quadfasel et al (2017) used the spring back of high manganese twinning-induced plasticity (TWIP) steels in “U-profile” bending.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…According to Adnan et al (2017), implementing a "nonuniform thickness" section is one of the most effective approaches for minimizing automotive components weight. The Taguchi method is used to investigate the spring back characteristics of the AA6061-alloy strip with "nonuniform thickness."…”

Section: Introductionmentioning

confidence: 99%

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Research on the laws of transition zone of non-deformation area for 90° V-bending forming process

Miah

Zhang

Malhi

2022

AEAT

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Purpose “V-bending” is the most commonly used bending process in which the sheet metal is pressed into a “V-shaped” die using a “V-shaped” punch to form a required angular bend. When the punch is removed after the operation, because of elastic recovery, the bent angle varies. This shape discrepancy is known as spring back which causes problems in the assembly of the component in the modern aerospace industry. Regarding the optimization of spring-back accuracy, this research will illustrate the laws of the transition area (TA) of the nondeformation area (NDA) during the 90° “V-shape” bending process. Design/methodology/approach According to the traditional “V-bending” process to optimize the spring-back accuracy, the bent sheets are divided into deformation area (DA) and NDA. For this reason, the traditional “V-bending” process may prolong error to optimize the spring-back accuracy because NDA has a certain amount of deformation, which the researcher always avoids. Firstly, bent sheets are divided into three parts in this research: DA, TA and NDA to avoid the distortion error in TA that are not considered in the NDA in traditional theory. Then, the stress and strain in the DA and TA were discussed during theoretical derivation and some hypotheses were proposed. In this research, the interval, position and distortion degree of the TA of the bending sheet are used by finite element analysis. Finally, V-shape bending tests for aluminum alloy at room temperature are used and labeled all the work pieces' TAs to realize the deformation amount in the TA. Findings The bending radius does not affect the range of the TA, it only changes the position of TA in the bending sheet. It is evident that the laws of TA were explored in the width direction and gradually changed from the inner layer to the outer layer based on the ratio of width and thickness of the bending plate/sheet. Originality/value In the modern aerospace industry, aircraft manufacturing technology must maintain high accuracy. This research has practical value in the 90° “V-shape” bending of metal sheets and the development of its spring-back accuracy.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Research on the laws of transition zone of non-deformation area for 90° V-bending forming process

Miah

Zhang

Malhi

2022

AEAT

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“…Extensive research has been carried out to study the behaviour of aluminium alloys, such as AA2xxx [6][7][8] , AA5xxx [9][10][11] and AA6xxx [12][13][14] series. Springback prediction is of great importance in the design of panel components and the forming processes used to produce them from aluminium alloys, and provides a feasible way of reducing trials and errors during manufacturing.…”

Section: Introductionmentioning

confidence: 99%

Springback Analysis of AA5754 under Warm Stamping Conditions

2019

EST

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Prediction of springback has been thoroughly investigated for cold forming processes; however with the rising prominence of lightweight materials and new forming technologies, predicting springback at elevated temperatures has become essential. In this paper, three analytical models and one empirical model were proposed to predict springback of an aluminium alloy AA5754 at warm forming conditions. The analytical models developed were based on the effect of the linear bending moment, uniform bending moment and through-thickness stress gradient respectively on springback, while the empirical model was developed using the results of L-shape bending tests. The model predictions were compared with the experiment results for various forming conditions. At room temperature, all four models had very good agreement. At elevated temperatures, the linear bending moment model was preferred for a die radius of 8mm, whereas empirical and stress gradient models were more suitable for a die radius of 4mm; in both cases, very close agreement was achieved where errors were within 5%.

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Effect of annealing, thickness ratio and bend angle on springback of AA6061-T6 with non-uniform thickness section

Cited by 2 publications

References 12 publications

Research on the laws of transition zone of non-deformation area for 90° V-bending forming process

Research on the laws of transition zone of non-deformation area for 90° V-bending forming process

Springback Analysis of AA5754 under Warm Stamping Conditions

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