Tailor welded blanks (TWBs) manufactured by drawing processes suffer from two major defects; weld-line movement (WLM) and springback. These defects can be reduced by using a counterpunch or controlling the value of the blank holder force and its scheme. This work presents a finite element analysis of the effect of variable blank holder force (VBHF) on springback and WLM of bench mark problem of draw-bending process of a TWB. The proposed VBHF scheme is developed based on the reaction forces predicted in a finite element model for artificially clamped weld-line case. The results obtained by applying VBHF are compared with those obtained using a counterpunch. The use of counterpunch is found to eliminate Vertical WLM in all the considered cases. Whereas side WLM using VBHF is found to be less than that obtained using counterpunch. When compared to the counterpunch technique, the springback values are found to be improved by applying the VBHF schemes.
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ASME 2015 International Manufacturing Science and Engineering Conference
June 8–12, 2015
Charlotte, North Carolina, USA
Conference Sponsors:
- Manufacturing Engineering Division
ISBN:
978-0-7918-5682-6
PROCEEDINGS PAPER
Effect of Variable Blank Holder Force on the Springback and Weld-Line Movement During Draw-Bending of Tailor Welded Blanks Available to Purchase
Bishoy M. Dawood,
Bishoy M. Dawood
Modern Academy for Engineering and Technology, Cairo, Egypt
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Mostafa Shazly,
Mostafa Shazly
The British University in Egypt, Al-Sherouk, Egypt
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Abdalla S. Wifi,
Abdalla S. Wifi
Cairo University, Giza, Egypt
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Alaa El-Mokadem
Alaa El-Mokadem
Cairo University, Giza, Egypt
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Bishoy M. Dawood
Modern Academy for Engineering and Technology, Cairo, Egypt
Mostafa Shazly
The British University in Egypt, Al-Sherouk, Egypt
Abdalla S. Wifi
Cairo University, Giza, Egypt
Alaa El-Mokadem
Cairo University, Giza, Egypt
Paper No:
MSEC2015-9379, V001T02A031; 8 pages
Published Online:
September 25, 2015
Citation
Dawood, BM, Shazly, M, Wifi, AS, & El-Mokadem, A. "Effect of Variable Blank Holder Force on the Springback and Weld-Line Movement During Draw-Bending of Tailor Welded Blanks." Proceedings of the ASME 2015 International Manufacturing Science and Engineering Conference. Volume 1: Processing. Charlotte, North Carolina, USA. June 8–12, 2015. V001T02A031. ASME. https://doi.org/10.1115/MSEC2015-9379
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