Investigation of Tearing in Hydroforming Process with Analytical Equations and Finite Element Method

Authors: H.Seidi, M.Jalali Azizpour, S.A.Zahedi

Abstract:

Today, Hydroforming technology provides an attractive alternative to conventional matched die forming, especially for cost-sensitive, lower volume production, and for parts with irregular contours. In this study the critical fluid pressures which lead to rupture in the workpiece has been investigated by theoretical and finite element methods. The axisymmetric analysis was developed to investigate the tearing phenomenon in cylindrical Hydroforming Deep Drawing (HDD). By use of obtained equations the effect of anisotropy, drawing ratio, sheet thickness and strain hardening exponent on tearing diagram were investigated.

Keywords: Hydroforming deep drawing, Pressure path, Axisymmetric analysis, Finite element simulation.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1077942

References:

[1] Kandil. A, An experimental study of hydroforming deep drawing, Journal of Material Processing Technology, Vol. 134, No.1, 2003, pp. 70-80
[2] Oh. Soo-Ik, Byung-Hee Jeon , Hyun-Yong Kim, Jae- Bong Yang, Applications of hydroforming processes to automobile parts, Journal of Material Processing Technology, Vol. 174, No.1-3, 2006, pp. 42-55
[3] Parsa. M.H, P. Darbandi, Experimental and numerical analyses of sheet hydroforming process for production of an automobile body part, Journal of Material Processing Technology, Vol. 198, No. 1-3, 2008, pp. 381-390
[4] Lang. L, J. Danckert, K. Nielsen and X. Zhou, Investigation into the forming of a complex cup locally constrained by a round die based on an innovative hydromechanical deep drawing method, Journal of Material Processing Technology, Vol. 167, No. 2-3, 2005, pp. 191-200.
[5] Zhang. S.H, M.R. Jensen, J. Danckert, K.B. Nielsen, D.C. Kang and L.H. Lang, Analysis of the hydromechanical deep drawing of cylindrical cups", Journal of Material Processing Technology, Vol. 103, No. 3, 2000, pp. 367-373
[6] Lang. L, J, Danckert and K. Nielsen, Investigation into hydrodynamic deep drawing assisted by radial pressure Part II. Numerical analysis of the drawing mechanism and the process parameters, Journal of Material Processing Technology, Vol. 166, No. 1, 2005, pp. 150-161
[7] Dachang. K, C. Yu and X. Yongchao, Hydromechanical deep drawing of superalloy cups, Journal of Material Processing Technology, Vol. 166, No. 2, 2005, pp.243-246.
[8] Lang. L, T. Li, D. Ana, C. Chia, K. Nielsen and J. Danckert, Investigation into hydromechanical deep drawing of aluminum alloy Complicated components in aircraft manufacturing, Material Science and England, 2008, In press.
[9] Lo. Sy-wei, Tze-Chi Hsu and W. R. D. Wilson, An analysis of the hemispherical-punch hydroforming processe, Journal of Material Processing Technology, Vol. 37, No. 1-4, 1993, pp. 225-239.
[10] Tirosh. J and A. Hazut, The hydrodynamic deep-drawing process for blanks of non-uniform thickness, International Journal of Mechanical Sciences, Vol. 31, No. 2, 1989, pp. 121-130.
[11] Yossifon. S and J. Tirosh, Rupture instability in hydroforming deepdrawing process, International Journal of Mechanical Sciences, Vol. 27, No. 9, 1985,pp. 559-570..