Numerical investigation and optimization of pulsating and variable blank holder force for identification of formability window for deep drawing of cylindrical cup

Kitayama, Satoshi; Natsume, Shinji; Yamazaki, Koetsu; Han, Jing; Uchida, Hiroaki

doi:10.1007/s00170-015-7385-7

Cited by 26 publications

(10 citation statements)

References 20 publications

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“…From numerical simulation coupled with the SAO using the RBF network using the PBHF and VBHF, formability window was observed. It was identified that the proposed approach was highly useful for clarifying the formability window of a difficult-to-draw material [27]. The tailored heat treated blank (THTB) technique was demonstrated to create a material property gradient through a suitable artificial aging treatment carried out prior to the forming process on the effectiveness of combining the hydromechanical deep-drawing process.…”

Section: Aluminum Alloy Behavior During Deep Drawing Processmentioning

confidence: 99%

Aluminum Alloys Behavior during Forming

Ramulu¹

2020

Aluminium Alloys and Composites

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Industrial revolution toward weight reduction and fuel efficiency of the automotive and aerospace vehicles is the major concern to replace heavy metals with light weight metals without affecting much strength. For this, aluminum alloys are the major contributors to those industries. Moreover, aluminum alloys are majorly categorized as 1xxx, 2xxx, 3xxx, 4xxx, 5xxx, 6xxx, 7xxx, and 8xxx based on major alloying elements. Among all, 2xxx, 5xxx, 6xxx, and 7xxx are having majority of applications in the abovementioned industries. For manufacturing any engineering deformable components, forming characteristics are must. Forming behavior of aluminum alloys has been evaluated through different processes including deep drawing, stretching, incremental forming, bending, hydro forming etc., under different process conditions (cold, warm, and hot conditions) and process parameters. Each process has its own process feasibility to evaluate the formability without any forming defects in products. The present chapter discusses a few important processes and their parameter effect on the aluminum alloys through the experimentations and simulation works.

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Section: Aluminum Alloy Behavior During Deep Drawing Processmentioning

confidence: 99%

Aluminum Alloys Behavior during Forming

Ramulu¹

2020

Aluminium Alloys and Composites

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“…The design optimization problem was constructed by Kitayama et al 95 to identify the formability window where punch stroke was subjected to wrinkling and tearing effect. The different sample points were generated using Latin hypercube design and sequence approximate optimization which was applied with radial basis function to find the optimum VBHF and pulsating blank holding force (PBHF) using formability window (see Figure 24(a) and (b)).…”

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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“…They also obtained the relationship between BHF and wrinkle number. Kitayama et al 19 clarified the formability window of a difficult-to-draw material with variable blank holder force (VBHF) and pulsating blank holding force (PBHF). They constructed a design optimization problem to find the formability window.…”

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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Numerical investigation and optimization of pulsating and variable blank holder force for identification of formability window for deep drawing of cylindrical cup

Cited by 26 publications

References 20 publications

Aluminum Alloys Behavior during Forming

Aluminum Alloys Behavior during Forming

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

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

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