Experimental characterization and inverse constitutive parameters identification of tubular materials for tube hydroforming process

Zribi, Temim; Khalfallah, Ali; Belhadjsalah, Hédi

doi:10.1016/j.matdes.2013.02.077

Cited by 53 publications

(39 citation statements)

References 17 publications

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“…Strano et al [3] pointed out that when finite element (FE) simulation is used to reduce engineering effort and lead times, a reliable input data, namely the constitutive parameters of tubular material and lubrication conditions, for THF process simulation is needed. Up to now, extensive research has been performed to characterize the material behavior and friction behavior between the contact surface of the tube and the die [10][11][12][13][14][15]. Some researchers presented several analytical models in conjunction with free bulging test to characterize the flow stress of tubular material.…”

Section: Introductionmentioning

confidence: 99%

“…In order to eliminate any assumption related to bulge geometry, Saboori et al [12] suggested that the profile was generated by fitting a spline. Furthermore, Zribi et al [13] determined the constitutive parameters of tubular material of low carbon steel S235 and aluminum alloy AA6063-O based on an inverse approach strategy which employed optimization algorithm to minimize the variation between the FE simulation results and experimental data. The lubrication mechanisms that occur at the tool-workpiece interface for the transition and expansion zones are discussed [14,15].…”

Section: Introductionmentioning

confidence: 99%

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The multi-objective optimization of the loading paths for T-shape tube hydroforming using adaptive support vector regression

Huang

Song

Liu

2016

Int J Adv Manuf Technol

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The objective of this study is to introduce adaptive support vector regression, whose accuracy and efficiency are illustrated through a numerical example, to determine the Pareto optimal solution set for T-shape tube hydroforming process. A validated finite element model developed by the explicit finite element code LS-DYNA is used to conduct virtual T-shape tube hydroforming experiments. Multiobjective optimization problem considering contact area between the tube and counter punch, maximum thinning ratio, and protrusion height is formulated. Then, the Latin hypercube design is employed to construct the initial support vector regression model, and some extra sampling points are added to reconstruct the support vector regression model to obtain the Pareto optimal solution set during each iteration. Finally, the ideal point is used to obtain a compromise solution from the Pareto optimal solution set for the engineers.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The multi-objective optimization of the loading paths for T-shape tube hydroforming using adaptive support vector regression

Huang

Song

Liu

2016

Int J Adv Manuf Technol

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“…In order to overcome the limitation of analytical models, inverse methods are considered to accomplish reliable identification of constitutive material parameters. Recently, Zribi et al, [27,28] have identified the flow stress and anisotropy parameters using a hybrid experimental-numerical method based upon both the free bulge test and uniaxial tensile tests. Strano et al, [29] have suggested an inverse energy approach to determine the flow stress of tubular materials, assuming isotropic behaviour.…”

Section: Introductionmentioning

confidence: 99%

Mechanical characterization and constitutive parameter identification of anisotropic tubular materials for hydroforming applications

Khalfallah

Oliveira

Alves

et al. 2015

International Journal of Mechanical Sciences

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This paper aims to identify the constitutive parameters of anisotropic tubular materials and to verify the accuracy of models' prediction. The identification of the constitutive parameters is based on information obtained from tensile tests, performed on samples cut from the tubes, and from the free tubular bulge test, using a home-developed bulge forming machine. Two tubular materials exhibiting different anisotropic behaviour and work hardening characteristics are investigated: a mild steel S235 seamed tube and an aluminium alloy AA6063 extruded tube. It is shown that advanced phenomenological yield functions, including a large number of anisotropy parameters, can accurately describe the plastic flow of highly anisotropic tubular materials during the tube hydroforming process.However, parameter identification procedure of advanced yield criteria requires a high number of experimental tests. Thus, in order to enable the parameter identification of these yield criteria when using a reduced set of experimental results, the present study develops a method that combines tensile tests with: i) a free bulge test, which is used to characterize the biaxial stress state experienced by the tube during the bulge testing, and ii) some generated artificial input data. Finally, the proposed method shows an excellent agreement between numerical predictions and experimental results.

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“…These problems are blocks of tube hydroforming process, and how to solve them is the hinge of the developing of tube hydroforming not only in the field of theory study but also in the field of engineering practice. Among all the blocks, the match of punch displacement and internal hydraulic pressure is the key problem for the tube hydroforming process [13][14][15][16]. In this paper, aiming at the problem of the match of punch displacement and internal hydraulic presser, by means of the experiment of forming the square component from tubular blank, the result of experiment is presented and the influence of loading path on tube hydroforming is discussed in the condition of same punch displacement and similar final internal pressure.…”

Section: Introductionmentioning

confidence: 99%

Experimental Research of Hydroforming Square Hollow Component

Li¹,

Li²

2015

Proceedings of the 2015 International Conference on Mechatronics, Electronic, Industrial and Control Engineering

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Abstract-Tube hydroforming is attracting more and more attention in many industrial fields, especially in automotive industries and aircraft industry. In this paper, aiming at the problem of the match of axial force and internal pressure, the results of experimental research on the influence of loading path on hydroforming square hollow component was presented. The detail experimental procedure and material property was introduced firstly and the effect of loading path on the thickness distribution of the component was discussed in detail. Finally, the difference of four loading path was presented and analyzed with experimental results. It is demonstrated that the forming of blank is under the effect of tension stress and compression stress, the tension stress come from the force of punch and the compression stress come from the internal pressure, the loading path plays an important role in tube hydorforming process which was the key technology of hydroforming and it is benefit to optimize the load path with hydroforming different hollow component.

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Experimental characterization and inverse constitutive parameters identification of tubular materials for tube hydroforming process

Cited by 53 publications

References 17 publications

The multi-objective optimization of the loading paths for T-shape tube hydroforming using adaptive support vector regression

The multi-objective optimization of the loading paths for T-shape tube hydroforming using adaptive support vector regression

Mechanical characterization and constitutive parameter identification of anisotropic tubular materials for hydroforming applications

Experimental Research of Hydroforming Square Hollow Component

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