Influence of Blank-Holder Force on Springback of Cap-Shape Parts Bending

Abstract:

Springback is the prominent problem in bending forming of sheet metal, which is difficult to control accurately, especially for the complex shaped bending parts. The change of blank-holder force will cause significant changes of bending springback amount. The theoretical analytical model of cap-shape parts bending, which takes into account of the harden ability, anisotropy and elastic deformation of material, is proposed in this paper based on the plane deformation assumption and the bending theory of sheet metal, the cap-shape parts bending of wide sheet is analyzed theoretically, the approximate calculation relational expression is derived between the blank-holder force and springback angle, and the influence of blank-holder force on springback is discussed. In the same conditions, the springback result deduced from theoretical formula is basically consistent with numerical simulation and experiment result.

• Periodical: Advanced Materials Research (Volumes 538-541)
• Pages: 1705-1710
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.538-541.1705
• Online since: June 2012
• Authors: Chun Jian Su, Shuang Shuang Miao, Lin Jing Xiao, Su Min Guo, Li Gao
• Keywords: Blank-Holder Force, Cap-Shape Parts, Sheet Bending, Springback

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