Study the Effect of Forming Media on the Hydroforming Process for Copper Tube

  • Rusul AbdulKareem Salman Technical Engineering College – Baghdad/ Iraq
  • Hani Aziz Ameen Technical Engineering College – Baghdad/ Iraq
  • Kadhim Mijbel Mashloosh Technical Engineering College – Baghdad/ Iraq


To observe the effect of media of the internal pressure on the equivalent stress distribution in the tube, an experimental study is done by constructing a testing rig to apply the hydraulic pressure and three dies are manufactured with different bulging configurations (square, cosine, and conical). In the other part, ANSYS APDL is generated to analyze the bulging process with hydraulic and rubber (natural and industrial) media. It was found that when the media is a rubber, the stress is decreased about 9.068% in case of cosine die and 5.4439% in case of conical die and 2.8544% in case of square die. So, it can be concluded that the internal pressure in the rubber media is much better than in hydraulic media. Also, the force needed for forming the shape using rubber is higher than that of hydraulic and the force needed to form using industrial rubber is higher than of natural rubber. The thickness distribution in the tube wall in case of rubber media is better than that for hydraulic media and for the industrial rubber is better than that for natural rubber for the same dies. In case of hydraulic, the lower forming pressure is needed to bulging process compared with the rubber media since height stress in the tube metal is existed, which causes the failure.   For the case of rubber, the forming pressure that was needed to bulge process is higher when compared with the hydraulic media but with less stress in tube metal and the failure in the wall is not existed with rubber media for the same pressure of hydraulic.


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Girard A.C., Grenier Y.J., Mac Donald B.J.," Numerical simulation of axisymmetric tube bulging using a urethane rod" ,Journal of Materials Processing Technology, 172, pp346–355,2006.

Sadiq Jaffar Aziz, "Experimental and Numerical Study of Tubes Hydroforming Process", Ph.D. thesis, Department of Production Engineering and Metallurgy, University of Technology 2008.

Selvakumar A. S., Kalaichelvan K., and Venkataswamy S., "Effect of Heat Treatment Process on Hydroforming of Tubular Materials", European Journal of Scientific Research, Vol.68, No.3, pp. 377-388, 2012.

Sami Abbas Hammood, " Numerical and Experimental Analysis of Tube Hydroforming in a Square Cross-Sectional Die", M.Sc. thesis, University of Technology, Production Engineering and Metallurgy Department,137 pages, 2012.

Emad Jabour Yousif, "Experimental Study for Tube Hydroforming" ,M.Sc. Thesis, University of Tikrit, 2013.

Li H.Y., Yu Z.J., Li J.H. and Liu M., "Experimental Research of Hydroforming Square Hollow Component", International Conference on Mechatronics, Electronic, Industrial and Control Engineering ,MEIC 2015.

Hani Aziz Ameen, Kadhim Mijbel Mashloosh, Rusul Abdel Kareem Salman, " effect of loading path on the stress distribution and wrinkling in X-branch type tube hydroforming", International Journal of Engineering Research & Technology (IJERT), ISSN: 2278-0181 Vol. 5 Issue 07, July-2016.

Hani Aziz Ameen, Kadhim Mijbel Mashloosh, Rusul Abdel Kareem Salman, " effect of die cavity configuration on the stress distribution in tube hydroforming process with and without rubber media ", International Journal of Scientific & Engineering Research, ISSN 2229-5518,Volume 7, Issue 9, September-2016.

Asnafi, N. , “Analytical Modeling of Tube Hydroforming”, Thin-Walled Struct., 34, pp: 295–330, 1999.

How to Cite
Salman, R., Ameen, H., & Mashloosh, K. (2018). Study the Effect of Forming Media on the Hydroforming Process for Copper Tube. Al-Khwarizmi Engineering Journal, 14(1), 52-66.