Effects of material and process parameters on wrinkling of conical parts in modified hydroforming process

Khademi, Maziar; Gorji, Hamid; Bakhshi-Jooybari, Mohammad

doi:10.1007/s00170-021-07413-8

Cited by 9 publications

(2 citation statements)

References 38 publications

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“…Over recent years, the sheet hydroforming process has been extensively employed in various industrial sectors, such as automotive and aerospace, due to its noteworthy advantages in uniform thickness distribution, low springback, and higherdimensional accuracy compared to the conventional deep drawing process. [1][2][3] In sheet hydroforming, the use of a pressure medium facilitates the material flow during the process, leading to a better thickness distribution. [4,5] In other words, the pressurized fluid (usually water or oil) causes the sheet to adhere to the surface of the punch and deforms to its shape, [6,7] improving the geometrical accuracy of the formed part.…”

Section: Introductionmentioning

confidence: 99%

On Improving Sheet Metal Formability in Hydrodynamic Deep Drawing Process through a Solid‐Oil‐Type Mineral Grease Pressure Medium

Modanloo,

Akhoundi,

Lee

et al. 2023

steel research int.

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In this research, the improvement in sheet metal formability obtained through the utilization of a mineral grease in solid oil type (SMG) pressure medium in the hydrodynamic deep drawing process assisted by radial pressure (HDDRP) was investigated by experiments and finite element method (FEM) simulations on flat‐bottom cups realized with pure copper and DIN 1.0338 steel. To determine the process parameters ranges, a FEM model was developed in ABAQUS/Explicit and validated against experimental results. Afterward, experiments were carried out using two pressure mediums with different viscosities, id est water, and SMG. Considering the results relevant for both sheet materials, the SMG medium allowed an average reduction of the sheet metal thinning of 15% and 10% on the corner edges while also granting a negligible thickness variation on the cup walls. On the other hand, the higher viscosity of the SMG, in comparison to the water medium, also resulted in an average 16% increase in the forming force when compared to the water pressure medium.This article is protected by copyright. All rights reserved.

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Section: Introductionmentioning

confidence: 99%

On Improving Sheet Metal Formability in Hydrodynamic Deep Drawing Process through a Solid‐Oil‐Type Mineral Grease Pressure Medium

Modanloo,

Akhoundi,

Lee

et al. 2023

steel research int.

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“…They also looked into the impacts of these pressures on the created components and found that by managing the maximum wrinkling height parameter as a result of pressure change, they were able to form a piece that was free of wrinkling and rupture [12]. Li et.al investigated the effect of pre-forming depth and loading loci of cavity pressure on the work piece's dimensional accuracy and thickness variation, and a well-formed conical part with desirable surface quality and high dimensional accuracy was obtained by controlling the full cavity pressure in the pre-forming and final forming stages in the ranges of 10-15 MPa and 8-15 MPa, respectively [13].…”

Section: Introductionmentioning

confidence: 99%

Numerical and experimental investigations on the effects of variable cavity pressure on the formability of GLARE using hydromechanical deep drawing

Tabasum

Lang

Mirza

et al. 2022

Int J Adv Manuf Technol

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Excellent physical and mechanical properties of fiber metal laminates (FMLs) have made them a very popular and most suitable material to make high strength and lightweight products in different industries for example automobile, military, and aerospace. Glass fiber aluminum reinforced epoxy (GLARE) is one of the most used fiber metal laminate among the family of fiber metal laminates, but there are some challenges in its formability. Our study mainly focuses on the formability of the GLARE cup parts by using hydromechanical deep drawing. Forming depth with good quality (without any wrinkling, delamination, or fracture), failure mode analysis and wall thinning rate (%) distribution of the parts are the main criteria in the formability. The influence of variable cavity pressure (VCP) with respect to punch strokes had been investigated by using numerical simulations and experiments. Results showed that the variable cavity pressure in case of increasing or decreasing the cavity pressure had very much effect on the formability. Stepwise increasing the VCP with respect to punch strokes resulted in a maximum forming depth of 29.00mm as well as good quality whereas in the case of stepwise decreasing the variable cavity pressure, results were not encouraging.Commercially available code ABAQUS explicit was used for finite element analysis simulation which had shown close agreement with the experimental results.

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Prediction equation for flange thickness of aluminum alloy cylinder-shaped parts by pressure rate under the action of thickness normal stress

Pan

Cai

2022

Int J Adv Manuf Technol

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Effects of material and process parameters on wrinkling of conical parts in modified hydroforming process

Cited by 9 publications

References 38 publications

On Improving Sheet Metal Formability in Hydrodynamic Deep Drawing Process through a Solid‐Oil‐Type Mineral Grease Pressure Medium

On Improving Sheet Metal Formability in Hydrodynamic Deep Drawing Process through a Solid‐Oil‐Type Mineral Grease Pressure Medium

Numerical and experimental investigations on the effects of variable cavity pressure on the formability of GLARE using hydromechanical deep drawing

Prediction equation for flange thickness of aluminum alloy cylinder-shaped parts by pressure rate under the action of thickness normal stress

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