See the published version of this preprint at The International Journal of Advanced Manufacturing Technology.
This is a preprint, a preliminary version of a manuscript that has not completed peer review at a journal. Research Square does not conduct peer review prior to posting preprints. The posting of a preprint on this server should not be interpreted as an endorsement of its validity or suitability for dissemination as established information or for guiding clinical practice.
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Research Article
Xiaohui Cui
Central south University
Corresponding Author
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The large ellipsoid parts are the main load-bearing components in the rocket tank, which are prone to wrinkle when using the traditional stamping. In order to solve the wrinkling problem in large parts, the EMIF method with a variable blank holder is proposed in this paper. The numerical simulation has shown that the sheet material near the blank holder is, as a consequence of stamping, subjected to circumferential compressive stress. When the drawing height was 100 mm, the sheet metal was notably wrinkled. In the electromagnetic forming (EMF) process, the sheet region facing the coil becomes thinner. However, the sheet metal thickness corresponding to the coil edge increases with the increase in forming height. If the EMF forming height is 150 mm, the sheet, which is in contact with the smooth mold, is deformed without a wrinkle. Compared to the traditional stamping, the EMF can significantly reduce the sheet metal wrinkling, improving the deformation height of the sheet metal smooth area.
Keywords
Large ellipsoid parts, Electromagnetic incremental forming, Variable blank holder structure, Wrinkle, Numerical simulation
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CURRENT STATUS: Published
View the published article at The International Journal of Advanced Manufacturing Technology.
Version 1
Posted 18 Mar, 2021
No community comments so far
Editorial decision: Major Revisions Needed
On 30 Apr, 2021
Reviewers invited
Invitations sent on 12 Mar, 2021
Reviews received
Received 12 Mar, 2021
Editor assigned
On 11 Mar, 2021
First submitted
On 07 Mar, 2021
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See the published version of this preprint at The International Journal of Advanced Manufacturing Technology.
This is a preprint, a preliminary version of a manuscript that has not completed peer review at a journal. Research Square does not conduct peer review prior to posting preprints. The posting of a preprint on this server should not be interpreted as an endorsement of its validity or suitability for dissemination as established information or for guiding clinical practice.
Learn more about In Review
Research Article
Xiaohui Cui
Central south University
Corresponding Author
Badges
Prescreen
This manuscript passed our Prescreen assessment
Complete author information
Appropriate declaration statements
Potential risks to human health
Prescreen
Peer Review Timeline
CURRENT STATUS: Published
View the published article at The International Journal of Advanced Manufacturing Technology.
Version 1
Posted 18 Mar, 2021
No community comments so far
Editorial decision: Major Revisions Needed
On 30 Apr, 2021
Reviewers invited
Invitations sent on 12 Mar, 2021
Reviews received
Received 12 Mar, 2021
Editor assigned
On 11 Mar, 2021
First submitted
On 07 Mar, 2021
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
License:
This work is licensed under a CC BY 4.0 License. Read Full License
View the published article at The International Journal of Advanced Manufacturing Technology.
The large ellipsoid parts are the main load-bearing components in the rocket tank, which are prone to wrinkle when using the traditional stamping. In order to solve the wrinkling problem in large parts, the EMIF method with a variable blank holder is proposed in this paper. The numerical simulation has shown that the sheet material near the blank holder is, as a consequence of stamping, subjected to circumferential compressive stress. When the drawing height was 100 mm, the sheet metal was notably wrinkled. In the electromagnetic forming (EMF) process, the sheet region facing the coil becomes thinner. However, the sheet metal thickness corresponding to the coil edge increases with the increase in forming height. If the EMF forming height is 150 mm, the sheet, which is in contact with the smooth mold, is deformed without a wrinkle. Compared to the traditional stamping, the EMF can significantly reduce the sheet metal wrinkling, improving the deformation height of the sheet metal smooth area.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9
Figure 10
Figure 11
Figure 12
Figure 13
Figure 14
Figure 15
Figure 16
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Figure 18
Figure 19
Figure 20
Figure 21
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