A theoretical, numerical, and experimental investigation of plastic wrinkling of circular two-layer sheet metal in the deep drawing

Morovvati, M.R.; Mollaei-Dariani, B.; Asadian-Ardakani, Mohammad Hossein

doi:10.1016/j.jmatprotec.2010.06.004

Cited by 70 publications

(43 citation statements)

References 14 publications

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“…In previous studies, scholars found that the forming behavior of multilayer metal composite sheets was strongly influenced by the layer stacking sequence [27,28,30,[39][40][41][42][43]. Sun et al [27] came to the conclusion that the forming limit of the Al/Cu clad metals with Al in the inner layer contacted with the punch is higher than the clad metals with Cu in the inner layer.…”

Section: Feature Size Effect On Forming Depthmentioning

confidence: 99%

“…By means of experiment and finite element simulation, Atrian and Fereshteh-Saniee [40] verified that, in the deep drawing process of laminated steel/brass sheets, the load-displacement curve and the influence extent of friction on forming load were significantly different under different stacking sequences. Morovvati et al [41] found that the minimum needed blank holder force was greater when the aluminum layer of two-layer aluminum-stainless steel sheets was in contact with the punch in the deep drawing process. Yilamu et al [42] concluded that the total thickness and bending angle of bended Al/SS composite sheets became smaller when the stainless steel layer was set inside.…”

Section: Feature Size Effect On Forming Depthmentioning

confidence: 99%

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Feature Size Effect on Formability of Multilayer Metal Composite Sheets under Microscale Laser Flexible Forming

Liu

Zhang

Gau

et al. 2017

Metals

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Abstract:Multilayer metal composite sheets possess superior properties to monolithic metal sheets, and formability is different from monolithic metal sheets. In this research, the feature size effect on formability of multilayer metal composite sheets under microscale laser flexible forming was studied by experiment. Two-layer copper/nickel composite sheets were selected as experimental materials. Five types of micro molds with different diameters were utilized. The formability of materials was evaluated by forming depth, thickness thinning, surface quality, and micro-hardness distribution. The research results showed that the formability of two-layer copper/nickel composite sheets was strongly influenced by feature size. With feature size increasing, the effect of layer stacking sequence on forming depth, thickness thinning ratio, and surface roughness became increasingly larger. However, the normalized forming depth, thickness thinning ratio, surface roughness, and micro-hardness of the formed components under the same layer stacking sequence first increased and then decreased with increasing feature size. The deformation behavior of copper/nickel composite sheets was determined by the external layer. The deformation extent was larger when the copper layer was set as the external layer.

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Section: Feature Size Effect On Forming Depthmentioning

confidence: 99%

Section: Feature Size Effect On Forming Depthmentioning

confidence: 99%

Feature Size Effect on Formability of Multilayer Metal Composite Sheets under Microscale Laser Flexible Forming

Liu

Zhang

Gau

et al. 2017

Metals

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“…Morovatiet al [5] studied wrinkling of two layer (aluminium-stainless steel) sheets in deep drawing process through an analytical method, numerical simulation and experiments. Mohammad et al [6] comparedthe effect of blank holder forces on wrinkling and fracture in deep drawing process of single and two-layer metal sheets and also, the effect of material on wrinkle A lot of analysis on wrinkling based on functional and bifurcation criterion proposed by Hutchinson [7] for the study of plastic buckling was done.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation on Effect of Wrinkle on Stiffness in Isotropic Metal Sheets

Patil¹,

Ramdas²,

Harshe³

et al. 2017

Proceedings of the International Conference on Communication and Signal Processing 2016 (ICCASP 2016)

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Abstract:A numerical study was conducted to find the effect of wrinkle in a metal sheet on its stiffness under tensile, compressive and flexural loading conditions. To define wrinkle of different sizes in model 'wrinkle factor' -ratio of thickness of specimen at wrinkle location to thickness of the specimen at no wrinkle location, is defined. Stiffness of a sheet with wrinkle has been compared with that of a pristine sheet under various loading conditions. From numerical results it is seen that, the stiffness in both tension and compression loading reduces as the wrinkle factor increases. But the stiffness in flexural loading is not affected considerably; contrary it increases for some wrinkle factor. Considering various loading conditions, it is observed that, stiffness in compression is affected more than in any other case. Furthermore, an attempt has been made to investigate force picked up by wrinkled portion and compared with the total force applied on the sample.

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“…Pourmoghadam et al [7] presented an efficient analytical model as well as an finite element (FE) computation of the blank holder force (BHF) leading to controlled local stability failure (wrinkling) and achieved optimum BHF in sandwich sheets forming. Morovvati et al [8] used a theoretical approach based on a well-known energy method, FE simulations, and experimental observations to study the wrinkling phenomenon in two-layer sheet deep drawing. Results demonstrate that the optimum BHF is dependent on the blank geometry, material properties and lay-up.…”

Section: Introductionmentioning

confidence: 99%

Studies on wrinkling and control method in rubber forming using aluminium sheet shrink flanging process

Chen

Wang

et al. 2015

Materials & Design (1980-2015)

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A theoretical, numerical, and experimental investigation of plastic wrinkling of circular two-layer sheet metal in the deep drawing

Cited by 70 publications

References 14 publications

Feature Size Effect on Formability of Multilayer Metal Composite Sheets under Microscale Laser Flexible Forming

Feature Size Effect on Formability of Multilayer Metal Composite Sheets under Microscale Laser Flexible Forming

Numerical Investigation on Effect of Wrinkle on Stiffness in Isotropic Metal Sheets

Studies on wrinkling and control method in rubber forming using aluminium sheet shrink flanging process

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