Influence of Friction on Springback of Quadrangle 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 friction conditions will cause significant changes of bending springback amount. The theoretical analytical model of quadrangle 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 quadrangle parts bending of wide sheet is analyzed theoretically, the approximate calculation relational expression is derived between friction coefficient and springback angle, and the influence of friction 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 217-218)
• Pages: 619-624
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.217-218.619
• Online since: March 2011
• Authors: Chun Jian Su, Guang Heng Zhang, Su Min Guo, Li Gao, Rui Ma
• Keywords: Friction, Quadrangle Parts, Sheet Bending, Springback

References

[1] S. H. LI, Z. Q. LIN, M. Z. LI. Research on curvature distribution and resilience control during multi-point forming process[J]. Chinese Journal of Mechanical Engineering, 2011, 37(11): 92-95.

DOI: 10.3901/jme.2001.11.092

[2] K. Masami. Artificial intelligence for plastic deformation[J]. Journal of the Japan Society for Technology of Plasticity (JSTP), 34, 1993, 34(387), 345-351.

[3] L. C. JIAO. The theory of neural network system[M]. Xi'an: XIDIAN university press, (1992).

[4] Y. P. GUAN. Research on intelligent control technologies for V shaped free bending of sheet metal[D]. Qinhuangdao: Yanshan University, (2004).

[5] C.J. SU. Research on the rule of springback and intelligent control technologies for multangular shape single bending[D]. Qinhuangdao Yanshan University. (2007).

[6] Y. Q. LIU, J. H. LIU,P. HU, et al. Quantitative prediction for springback of unloading and trimming in sheet stamping forming[J]. Chinese Journal of Mechanical Engineering, 2003, 16(2): 190-192.

DOI: 10.3901/cjme.2003.02.190

[7] D. J. ZHANG, Z. S. CUI. An analytical model for predicting springback and side wall curl of sheet after U bending[J]. Computational Materials Science, 2007, 38(4): 707-715.

DOI: 10.1016/j.commatsci.2006.05.001

[8] T. Y. WANG, F.Y. LIN, S. CHEN, et al. Using Cnv group to solve bending beam problem[J]. Chinese Journal of Mechanical Engineering, 2004, 17(Supplement): 213-217.

DOI: 10.3901/cjme.2004.supp.213