Cylindrical cup-drawing characteristics of aluminum-polymer sandwich sheet

Liu, Jianguang; Zhuang, Lei

doi:10.1007/s00170-018-2077-8

Cited by 7 publications

(2 citation statements)

References 25 publications

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“…This process is also cost-effective because it is characterized by high production rates and gives finished parts of good quality without additional operations. Nowadays, for sheet metal components manufactured by deep drawing process, a more complex profile and higher formability are required [11][12][13][14][15]. The optimization of process parameters to enhance the formability of AA 5182 alloy in the deep drawing of square cups by hydroforming was carried out [11].…”

Section: Introductionmentioning

confidence: 99%

Multi Draw Radius Die Design for Increases in Limiting Drawing Ratio

Phanitwong

Thipprakmas

2020

Metals

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As a major sheet metal process for fabricating cup or box shapes, the deep drawing process is commonly applied in various industrial fields, such as those involving the manufacture of household utensils, medical equipment, electronics, and automobile parts. The limiting drawing ratio (LDR) is the main barrier to increasing the formability and production rate as well as to decrease production cost and time. In the present research, the multi draw radius (MDR) die was proposed to increase LDR. The finite element method (FEM) was used as a tool to illustrate the principle of MDR based on material flow. The results revealed that MDR die could reduce the non-axisymmetric material flow on flange and the asymmetry of the flange during the deep drawing process. Based on this material flow characteristic, the cup wall stretching and fracture could be delayed. Furthermore, the cup wall thicknesses of the deep drawn parts obtained by MDR die application were more uniform in each direction along the plane, at 45°, and at 90° to the rolling direction than those obtained by conventional die application. In the present research, a proper design for the MDR was suggested to achieve functionality of the MDR die as related to each direction along the plane, at 45°, and at 90° to the rolling direction. The larger draw radius positioned for at 45° to the rolling direction and the smaller draw radius positioned for along the plane and at 90° to the rolling direction were recommended. Therefore, by using proper MDR die application, the drawing ratio could be increased to be 2.75, an increase in LDR of approximately 22.22%.

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Section: Introductionmentioning

confidence: 99%

Multi Draw Radius Die Design for Increases in Limiting Drawing Ratio

Phanitwong

Thipprakmas

2020

Metals

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“…Their analyses showed that the LDR and the geometrical limitations of the bimetallic specimens were improved in comparison with any monometallic blank. Liu et al [15] studied the deep drawing process of aluminum-polymer sandwich sheets. The outcomes of their research revealed that increasing the thickness and strength of the middle layer of the workpiece resulted in a decrease in the formability.…”

Section: Introductionmentioning

confidence: 99%

An investigation on the effects of the process parameters of hydro-mechanical deep drawing on manufacturing high-quality bimetallic spherical-conical cups

Yaghoubi

Fereshteh-Saniee

2020

Int J Adv Manuf Technol

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This paper aims to analytically, experimentally, and numerically study the hydro-mechanical deep drawing (HMDD) process of bimetallic specimens. The blank included aluminum and steel sheets used to produce double-layer conical-spherical cups. The punch geometry, maximum fluid pressure, pre-bulge pressure, layer arrangement, and the drawing depth were the process parameters investigated in this article. Two criterions based on the thickness strain and thickness variation were used to assess the effects of these variables on the quality of the final product. The results of the analytical modeling and numerical simulations were verified by comparing with the related experimental data. Different outcomes were in acceptable agreement with each other. Based on the findings obtained, by increasing the fluid pressure up to 15 MPa, the quality of the final product was enhanced. Moreover, by applying the pre-bulge pressure in the HMDD process, the separation between the layers as well as the thickness variation decreased. The highest improvements in the values of the maximum thickness strain and thickness variation in the current investigation were gained to be 57% and 68%, respectively, in comparison with the traditional state of the deep drawing process.

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Experimental and simulated comparison of finite element models of bimetallic sheets for deep drawing process

Dengiz

Yıldızlı

2021

Int J Adv Manuf Technol

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In this study, different techniques using for modeling of bimetallic sheets by nite elements method has been compared. Sheets modeled with 5 different assumptions were compared with each other and experimental datas, to determine the FE model that gives the most realistic result. FE models were created with the assumption that the adhesion was excellent or separable, and with the case that the solidi ed adhesive in the intermediate layer was modeled and not modeled. As a result, the closest values to the experimental results were obtained with the model created with the assumption that there is a solidi ed adhesive layer in the middle layer and there is an adhesion interface between this layer and metallic layers. On the other hand, when the adhesive is not modeled in the intermediate layer, it has been observed that the CPU time is reduced by 2 times while the results are seen small changes.

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Cylindrical cup-drawing characteristics of aluminum-polymer sandwich sheet

Cited by 7 publications

References 25 publications

Multi Draw Radius Die Design for Increases in Limiting Drawing Ratio

Multi Draw Radius Die Design for Increases in Limiting Drawing Ratio

An investigation on the effects of the process parameters of hydro-mechanical deep drawing on manufacturing high-quality bimetallic spherical-conical cups

Experimental and simulated comparison of finite element models of bimetallic sheets for deep drawing process

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