Effect of Punch Profile Radius on Springback in V-Bending of Tailor Welded Blanks Welded in Transverse Direction

Abstract:

Tailor welded blank (TWB) is an advancement in the field of sheet metal forming in which multiple blanks are welded together to create a single blank prior to forming process. Springback behaviour of TWBs in bending is complex due to thickness or material combination. In this research, the effect of punch profile radius on the springback of transversely welded strips has been investigated in V-bending operation with included bend angle of 90° and using punches with three different punch profile radii of 7.5, 10and 12.5 mm. TWBs were prepared by laser welding of interstitial-free steel blanks with a thickness combination of 0.6 and 1.2mm. The Tensile properties of parent materials and tailored blanks were evaluated by Tension test as per ASTM-E8M standard. The bend samples with transverse weld line were prepared to a size of 20X150mm to ensure plane strain bending. Finite element (FE) simulations were performed using Abaqus and were found to be in good agreement with the experimental results.

• Periodical: Applied Mechanics and Materials (Volumes 592-594)
• Pages: 1045-1049
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.592-594.1045
• Online since: July 2014
• Authors: Vijay Gautam*, Digavalli Ravi Kumar, Ashish K. Shukla
• Keywords: Interstitial-Free Steel, Laser Welding, Springback, Tailor Welded Blanks, V-Bending

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