A review on effect of thinning, wrinkling and spring-back on deep drawing process

Babu, M.C. Lenin

doi:10.1177/0954405417752509

Cited by 67 publications

(32 citation statements)

References 139 publications

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“…And also, the force generated by the fluid pressure in the cavity acts as uniform stress during the forming operation. As reported in the literature [22], the use of the pressure force, in the HDD process, reduces product defects like thinning. More uniformity of thickness distribution can be obtained by using the initial bulging of the blank [23].…”

Section: Resultsmentioning

confidence: 82%

Comparative study of conventional and hydromechanical deep drawing processes based on finite element analysis

Abbadeni

Zidane

Zahloul

et al. 2019

Frattura Ed Integrità Strutturale

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A two-dimensional finite element analysis has been performed to investigate hydromechanical and conventional deep drawing processes. The effects of the fluid structure interaction on the material formability, the strain and the thickness distributions are investigated. Large plastic deformation is observed in the plank at the bottom and the corner of the punch. Plastic deformation distribution results show a difference between the hydromechanical deep drawing process and the conventional deep drawing which is due to the friction effect. This latter represents one of the major features of the hydromechanical deep drawing process. Concerning the formability of the blank, the obtained results show that the hydromechanical deep drawing process gives a better formability than the conventional deep drawing process.

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Section: Resultsmentioning

confidence: 82%

Comparative study of conventional and hydromechanical deep drawing processes based on finite element analysis

Abbadeni

Zidane

Zahloul

et al. 2019

Frattura Ed Integrità Strutturale

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show abstract

“…However, the main influence on deviation between CAD and product lies at the elastic springback of the sheet metal itself. Springback compensation strategies are well established for sheet metal forming (Takalkar and Babu 2018) and can be incorporated for future additively manufactured dies.…”

Section: Discussionmentioning

confidence: 99%

3D printed prototyping tools for flexible sheet metal drawing

Frohn-Sörensen¹,

Geueke²,

Tuli³

et al. 2020

Preprint

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Due to the change from mass production to mass personalized production and the resulting intrinsic product flexibility, the automotive industry, among others, is looking for cost-efficient and resource-saving production methods to combining global just-in-time production. In addition to geometric manufacturing flexibility, additive manufacturing offers a resource-saving application for rapid prototyping and small series in pre-development. In this study, the FDM process was utilized to manufacture the tooling to draw a small series of sheet metal parts in combination with the rubber pad forming process. Therefore, a variety of common AM polymer materials (PETG, PLA and ABS) is compared in compression tests, from which PLA is selected to be applied as sheet metal forming die. For the rubber pad forming process, relevant processing parameters, i.e. press force and rubber cushion hardness, are studied with respect to forming depth. The product batch was examined by an optical evaluation using a metrological system. The scans of the tool and sheet metal parts confirm the mechanical integrity of the additively manufactured die from polymer and thus the suitability of this approach for small series in sheet metal drawing processes, e.g. for automotive applications.

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“…Formability is defined as the maximum deformation that a sheet can tolerate without any necking or rupture. 13,14 The forming limit diagram (FLD) is applied to investigate the limit of major and minor strains that the sheet can tolerate without any necking. 15–17 Many types of research have been done to study the explosive welded sheets.…”

Section: Introductionmentioning

confidence: 99%

Investigation of forming limit diagram and mechanical properties of the bimetallic Al/Cu composite sheet at different temperatures which fabricated by explosive welding

Alaie

Hashemi

Kazemi

2020

Proceedings of the Institution of Mechanical Engineers, Part B:

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This research aims to investigate the mechanical properties, fractography and formability of Al/Cu two-layer composite sheets at three temperatures (23 °C, 120 °C and 220 °C). The bimetal sheet was fabricated by the explosive welding method. The anisotropy of the Al/Cu bimetallic composite sheet was investigated. The result showed significant anisotropy in the Al/Cu composite sheet due to the explosive welding process. The Vickers hardness measurements demonstrated that the hardness in both aluminum and copper sides increased because of the work hardening phenomenon. The fractography of the surfaces was investigated by the scanning electron microscope after tensile tests to study the effect of temperature and the direction, which the samples prepared for the tensile test with respect to the explosion direction, on the mechanism of the fracture. For the tensile test, the samples were prepared parallel to the detonation direction [Formula: see text] and two other directions with respect to the explosion direction [Formula: see text] from the AA1100/Cu10100 bimetallic sheet. Finally, the forming limit diagram of the Al/Cu composite sheet was determined at the three mentioned temperatures. The results demonstrated that temperature and the direction had a considerable effect on the mechanism of the rupture and formability. As the temperature of the specimen rises, the regions that brittle fracture happened became less and the formability improved significantly. The formability of the Al/Cu composite sheet enhanced about 34.8% when the temperature increased from 23 °C to 120 °C and 67.5% when it increased from 120 °C to 220 °C.

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A review on effect of thinning, wrinkling and spring-back on deep drawing process

Cited by 67 publications

References 139 publications

Comparative study of conventional and hydromechanical deep drawing processes based on finite element analysis

Comparative study of conventional and hydromechanical deep drawing processes based on finite element analysis

3D printed prototyping tools for flexible sheet metal drawing

Investigation of forming limit diagram and mechanical properties of the bimetallic Al/Cu composite sheet at different temperatures which fabricated by explosive welding

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