Investigation of sheet bending parameters on springback in nickel coated mild steel sheets using response surface methodology

Pritima, D.; Padmanabhan, P.V.A.

doi:10.1051/meca/2018009

Cited by 5 publications

(4 citation statements)

References 31 publications

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“…Firstly, a Classical model is considered. The mechanical behaviour of material is initially modelled by the elastic parameters (E and n) in the elastic range and by a reference curve according to the equation (1) in the plastic range of the tensile curve as shown in Figure 7. The software Abaqus/Standard was used to setup the numerical model of 3-point bending test with SB stage.…”

Section: Numerical Simulation Of the 3-point Bending Test With Sb Stagementioning

confidence: 99%

“…In these processes, plastic deformation is followed by some elastic recovery upon unloading called springback (SB). This complex phenomenon is the geometric change during forming process and it affects the dimensional accuracy of a finished product [1]. SB amount should be taken into consideration so as to produce bent sheet metal parts within acceptable tolerance limits [2].…”

Section: Introductionmentioning

confidence: 99%

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Influence of the material microstructural properties on a 3-point bending test

Maati

Tabourot

Balland

et al. 2020

Mechanics & Industry

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The purpose of this study is to highlight the role played by some important factors on sprinback phenomenon. This latter affects significantly the geometry of the manufactured product. Large automotive or plane body parts are specifically affected by this phenomenon which complicates the tools design. The study focuses here on specific materials with high trend to develop heterogeneous strains during forming processes. Due to its hexagonal crystalline structure, titanium has initial heterogeneous microstructure that grows stronger when plastic strain occurs. Heterogeneous microstructures induce the coexistence in the material of volumes with different mechanical properties even, in some case, with different mechanical behaviours. Therefore, accommodation between these volumes generates distributed internal stresses and important elastic energy storage. The macroscopic behaviour can be provided either by average phenomenological constitutive equation identical for all locations in the material or by integrating a set of local constitutive relations taking into account the variability of the behaviour as a function of the position in the material. In this context, experimental and numerical studies of a 3-point bending test on titanium alloy are considered.

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Section: Numerical Simulation Of the 3-point Bending Test With Sb Stagementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of the material microstructural properties on a 3-point bending test

Maati

Tabourot

Balland

et al. 2020

Mechanics & Industry

View full text Add to dashboard Cite

show abstract

“…Particularly, it is more problematic in the assembled parts such as B pillar in automobiles. Factors such as punch radius, lubricant, punch speed, crushing force, dwell time, grain size, thickness are effective on springback [18][19][20][21][22]. Various strain rates are used for forming sheet metal.…”

Section: Tensile Testmentioning

confidence: 99%

Experimental and Numerical Investigation of the Effect of Different Temperature and Deformation Speeds on Mechanical Properties and Springback behaviour in Al-Zn-Mg-Cu Alloy

Kılıç

2019

mech

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Thanks to their low density and high strength, the 7XXX series aluminum alloys are widely used as a support/beam parts in the aerospace industry. This alloy is target in the lightening studies of the automotive industry and surveys for sheet metal are still in progress. It is a series of alloys that can be applied to the aging process and has the most effect on mechanical properties. As formability is quite weak, methods are investigated. In this study, tensile test, bending test and Erichsen tests are performed at different deformation rates and temperatures. As a result of the experiments, it has been seen that the formability increases at high temperature and low deformation rates. If paint baking time is long, there will be no loss of strength. Also, the bending process is modeled with the help of the finite element analysis programs and the springback estimations are examined. It is seen that the results of the modeling process are quite successful. The effect of the strain rate sensitivity is determined.

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“…Considering that the relationship between the process parameters and springback is nonlinear, some researchers have committed to conducting research by using statistical methods [11][12][13]. Liu et al utilized the artificial neural network (ANN) method combined with a genetic algorithm to establish a springback model to study the relationship between material thickness, bending radius and springback [14].…”

Section: Introductionmentioning

confidence: 99%

Optimisation of micro W-bending process parameters using I-optimal design-based response surface methodology

et al. 2021

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There is an increasingly recognised requirement for high dimensional accuracy in micro-bent parts. Springback has an important influence on dimensional accuracy and it is significantly influenced by various process parameters. In order to optimise process parameters and improve dimensional accuracy, an approach to quantify the influence of these parameters is proposed in this study. Experiments were conducted on a micro W-bending process by using an I-optimal design method, breaking through the limitations of the traditional methods of design of experiment (DOE). The mathematical model was established by response surface methodology (RSM). Statistical analysis indicated that the developed model was adequate to describe the relationship between process parameters and springback. It was also revealed that the foil thickness was the most significant parameter affecting the springback. Moreover, the foil thickness and grain size not only affected the dimensional accuracy, but also had noteworthy influence on the springback behaviour in the micro W-bending process. By applying the proposed model, the optimum process parameters to minimize springback and improve the dimensional accuracy were obtained. It is evident from this study that the I-optimal design-based RSM is a promising method for parameter optimisation and dimensional accuracy improvement in the micro-bending process.

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Investigation of sheet bending parameters on springback in nickel coated mild steel sheets using response surface methodology

Cited by 5 publications

References 31 publications

Influence of the material microstructural properties on a 3-point bending test

Influence of the material microstructural properties on a 3-point bending test

Experimental and Numerical Investigation of the Effect of Different Temperature and Deformation Speeds on Mechanical Properties and Springback behaviour in Al-Zn-Mg-Cu Alloy

Optimisation of micro W-bending process parameters using I-optimal design-based response surface methodology

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