A New Method to Accurately Describe Cross-Section Distortion in Rotary Draw Bending Process of Thin-Walled Rectangular Tube

Abstract:

To obtain the cross-sectional distortion of thin-walled rectangular tube in rotary draw bending process accurately, a new method to exactly describe the distortion has been proposed. The coupling between the convex of the tube side walls and the concave of the tube flanges is considered in the distortion modeling. Combined with the experiments, the cross-sectional distortion obtained using the new distortion model are compared with the previous ones obtained without considering the convex based on numerical simulations. The results show that cross-sectional distortion obtained by current model is closer to reality than the previous ones. The distortion by current model is more safety in the practical bending process.

• Periodical: Applied Mechanics and Materials (Volumes 117-119)
• Pages: 1839-1842
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.117-119.1839
• Online since: October 2011
• Authors: Gang Yao Zhao, Rang Yang Zhang, Yu Li Liu, Zheng Hua Guo, Ping Fang
• Keywords: Coupling, Cross-Sectional Distortion, Numerical Simulation, Rotary Draw Bending

References

[1] F. Vollertsen, A. Sprenger, J. Kraus, H. Arnet: J. Mater. Process. Tech. Vol. 87 (1999), p.1

[2] J. E. Miller, S. Kyriakides: Int. J. Mech. Sci. Vol. 45 (2003), p.115

[3] E. Corna: Int. J. Mech. Sci. Vol. 46 (2004), p.433

[4] N. Utsumi, S. Sakaki: J. Mater. Process. Tech. Vol. 123 (2002), p.264

[5] Y.L. Liu, H. Yang, S.S. Cui, G.Y. Zhao: J. Plasticity Eng. Vol. 14(3) (2007), p.72 (in Chinese)

[6] Y.L. Liu, C.H. Lu, G.Y. Zhao, H. Yang: China Mech. Eng. Vol. 19(16) (2008), p.1972 (in Chinese)

[7] G.Y. Zhao, Y.L. Liu, H. Yang, C.H. Lu: Trans. Nonferrous Met. Soc. China Vol. 20 (2010), p.484

[8] G.Y. Zhao, Y.L. Liu, H. Yang, C.H. Lu, R.J. Gu: Mater. Sci. Eng. A Vol. 499 (2009), p.257