Tube Hydroforming - State-of-the-Art and Future Trends

Ahmetoglu, Mustafa A.; Altan, Taylan

doi:10.4271/1999-01-0675

Cited by 52 publications

(49 citation statements)

References 1 publication

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“…as compared with the traditional stamping and welding processes [1,2]. A successful THF process requires a proper combination of the loading parameters, such as internal pressure and axial feeding.…”

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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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%

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 addition, many hollow parts with the complicated structure used to be made by casting or welding should be manufactured by more advanced forming technology with excellent mechanical properties and high efficiency. As an advanced lightweight forming technology, tube hydroforming has been more attractive in the fields of automobile, aeronautical, and astronautical industry, due to its non-replaceable advantages in making hollow variable cross-section tube components [2][3][4]. Tube hydroforming technology is used to form hollow parts by applying a high internal hydraulic pressure and additional axial feed at the same time to force a tube to conform to the shape of a given die cavity.…”

Section: Introductionmentioning

confidence: 99%

Numerical and experimental study on large deformation of thin-walled tube through hydroforging process

Zhang

et al. 2016

Int J Adv Manuf Technol

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In order to form the thin-walled hollow parts with large deformation, a technology has been developed in the present study by combination of hydroforming with moving dies similar to forging process, known as a hydroforging technology. Based on the finite elements simulation, the process of hydroforging was investigated to avoid thinning, wrinkling, and bursting due to unreasonable selection of the internal pressure. The suitable loading path was discussed. The results from simulation keep a reasonable agreement with that from experiment.

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“…It offers many advantages in comparison with conventional manufacturing technologies such as weight reduction through parts consolidation, integrated process of forming lower cost with fewer parts and tools, fewer secondary operations e.g. hole punching and welding, lower springback which reduces dimensional variations after forming, improved strength and durability and design flexibility where geometry of cross section can be varied along the part [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Development of automotive engine cradle by hydroforming process

Kim¹,

Kim²,

Choi

et al. 2007

J Mech Sci Technol

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The hydrofonning technology may bring many advantages to automotive applications in terms of better structural integrity of the parts, lower cost from fewer part count, material saving, weight reduction, lower springback, improved strength and durability and design flexibility. In this study, the whole process of front sub-frame parts development by tube hydroforming using steel material having tensile strength of 440 MPa grade is presented. At the part design stage, it requires feasibility study and process design aided by CAE (Computer Aided Design) to confirm hydrofonnability in details. Effects of parameters such as internal pressure, axial feeding and geometry shape in automotive engine cradle by the hydroforming process were carefully investigated. Overall possibility of hydroformable engine cradle parts could be examined by cross sectional analyses. Moreover, it is essential to ensure the formability of tube material on every forming step such as pre-bending, preforming and hydroforming. At the die design stage, all the components of prototyping tool are designed and interference with the press is examined from the point of deformed geometry and local thinning.

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Tube Hydroforming - State-of-the-Art and Future Trends

Cited by 52 publications

References 1 publication

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

Numerical and experimental study on large deformation of thin-walled tube through hydroforging process

Development of automotive engine cradle by hydroforming process

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