Critical blank-holder force in axisymmetric deep drawing

Qin, S.; Xiong, Baiqing; Lü, Hong; Zhang, Tingting

doi:10.1016/s1003-6326(12)61714-2

Cited by 22 publications

(9 citation statements)

References 9 publications

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“…It was observed that the friction coefficient between blank and punch decreases with the increase in BHF (but <30 kN); also, thickness variation and equivalent strain were significantly influenced by the increase in BHF. In contrast, Qin et al 92 used energy method for prediction of critical blank holding force for axisymmetric deep drawing. The observed relative error for equivalent strain and circumferential stresses was 35.9% and 22.3%, respectively.…”

Section: Wrinkling Effectmentioning

confidence: 99%

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

Babu

2018

Proceedings of the Institution of Mechanical Engineers, Part B:

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There are various processes practiced in a market for manufacturing axisymmetrical cup with significant forming depth among which deep drawing process is most prompt. The deep drawing process is a forming process with ongoing interest which will have a major impact on industries in coming years. This article focuses on the current status and potential of future development of technology in the deep drawing process. First, it describes various types of approaches and techniques used in the deep drawing of different materials. This is followed by brief reviews of advantages and limitations of these technologies with its application in industries. The details of these technologies are just referred rather than explaining in detail. The further part of this article focuses on advanced methods for predicting defects like thinning, wrinkling and spring-back in deep drawing process which are mostly responsible for rejection of the components. The opportunity in the development of flexibility in deep drawing process is covered with an observed barrier in the prediction of defects such as thinning, wrinkling and spring-back. The obtained evidence indicates that deep drawing process may not be applicable for all materials, but represents an excellent opportunity in the drawing of multilayer metal and composite material sheets to complex shapes.

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Section: Wrinkling Effectmentioning

confidence: 99%

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

Babu

2018

Proceedings of the Institution of Mechanical Engineers, Part B:

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“…Plastic deformation appears in most areas of the product and wrinkling is reduced dramatically. But the bottom corner of the part still has a little crack, which is because the blank-holder force or drawing speed is too large [6,7], and can be eliminated by optimizing the drawing process parameters. The results indicate that the blank-holder is indispensable for the formation of the product.…”

Section: Fld With or Without Blank-holder Forcementioning

confidence: 99%

Design and analysis of cold stamping process for the car beam left/right section

Yang¹,

Lian²,

Li³

et al. 2016

Proceedings of the 2016 3rd International Conference on Mechatronics and Information Technology

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The cold stamping forming processes of the car beam left/right section were designed and analyzed using the CAD/CAE technology and related software. Based on the establishment of the numerical model for the car beam left/right section, the stamping processes of the product were determined through the technical analysis. In particular, the effects of different drawing schemes and parameters (including blank-holder force, blank size, lubrication conditions, etc) on the manufacturability of the product were investigated by numerical simulation technology. The forming effects were evaluated according to forming limit diagram and thickness distribution diagram. As a result, the reasonable process design and optimum parameters are obtained, which can reduce the tendencies of wrinkling, cracking and thickness reduction, and achieve sufficient plastic deformation of the blank.

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“…They also neglected the other defects, such as wall thinning and spring-back. Qin et al 18 utilized the energy technique for the computation of critical BHF for axisymmetric deep drawing. They assumed that the power function expressed the wrinkle shape.…”

Section: Introductionmentioning

confidence: 99%

Analytical and numerical investigation of wrinkling limit diagram in deep drawing of two-layer sheets with experimental verification

Bamdad

Hashemi

2021

Proceedings of the Institution of Mechanical Engineers, Part L:

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Wrinkling, which is primarily caused by insufficient blank holder force, is a significant issue that induces inconsistencies in forming parts, particularly in the deep drawing process. In this article, an investigation of the wrinkling in the deep drawing process of two-layer sheets is performed through an analytical approach, numerical method, and experimental tests. Increasing in the blank holder force, the process is under control by the proposed algorithm. Consequently, it aims to find the minimum required blank holder force to avoid wrinkling. The energy technique is utilized to predict the wrinkling in the analytical approach. Similarly, finite element simulations are implemented to investigate the effect of forming parameters on wrinkling. The experimental tests are performed to verify the analytical and numerical results. The impact of the material properties and stacking sequences (lay-up) on blank holder force and forming force are studied. Results show that the optimum blank holder force is dependent on the material properties, blank geometry, and layer stacking sequences. Also, a good agreement between analytical, numerical, and experimental results is achieved.

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Critical blank-holder force in axisymmetric deep drawing

Cited by 22 publications

References 9 publications

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

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

Design and analysis of cold stamping process for the car beam left/right section

Analytical and numerical investigation of wrinkling limit diagram in deep drawing of two-layer sheets with experimental verification

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