Effect of Sheet Thickness on Magnitude and Distribution of Magnetic Force in Electromagnetic Sheet Metal Forming Process

Abstract:

Electromagnetic forming is one of the sheet metal forming processes in which force is applied by an electromagnetic pulse. In this process, sheet metal is deformed rapidly at high strain rates. In this paper, FE simulation has been applied to study distribution of magnetic field formed by spiral coil and inducted eddy current in a circular sheet. At first, magnitude and components of magnetic field intensity have been calculated and compared with experimental results taken from literature. After verifying of simulation results, the effects of sheet thickness on magnetic force magnitude and distribution have been investigated.

• Periodical: Applied Mechanics and Materials (Volumes 110-116)
• Pages: 3506-3511
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.110-116.3506
• Online since: October 2011
• Authors: Mohammad Sedighi, H. Karimi-Nemch, M. Khandaei
• Keywords: Component: Electromagnetic Forming, Distribution, Finite Element, Magnetic Field, Magnetic Force Density

References

[1] W. H. Gourdin, Analysis and assessment of electromagnetic ring expansion as a high‏-strain rate test, J. Appl. Phys, 1989, vol. 65, p.411.

[2] S. T. S. Al‏-Hassani, Magnetic pressure distribution in sheet metal forming. Electrical method of machining, forming and coating, Inst‏. Elect‏. Eng. Conf. Publ, 1975, vol. 1975, p.1–10.

[3] N. Takatsu, M. Kato, K. Sato and T. Tobe, High-speed forming of metal sheets by electromagnetic force, Inte. J. Japan. Soci. Mech. Eng, 1988, vol. 60, pp.142-148.

DOI: 10.1299/jsmec1988.31.142

[4] G. K. Fenton and G. S. Daehn, Modeling of electromagnetically formed sheet metals, ‏ J. Mat. Proc. Tech, 1998, vol. 75, p.6–16.

[5] J. P. M. Correia, M. A. Siddiqui, S. Ahzi, S. Belouettar and R. Davies, A simple model to simulate electromagnetic sheet free bulging process, ‏ Int. J. Mech. Scie, 2008, vol. 50, p.1466‏-1475.

DOI: 10.1016/j.ijmecsci.2008.08.008

[6] L. Wang, Z. Y. Chen, C. X. Li and S. Y. Huang, Numerical simulation of the electromagnetic sheet metal bulging process, ‏ Int. J. Adv. Manuf. Tech, 2006, vol. 30, pp. ‏ 395–400.

DOI: 10.1007/s00170-005-0094-x

[7] J‏. M S‏. I. Boyd, Increased Formability and the Effects of the Tool‏/Sheet Interaction in Electromagnetic Forming of Aluminum Alloy Sheet, "‏ Master, s Thesis, Department of Mechanical Engineering, University of Waterloo, Waterloo, Ontario, Canada, 2005‏.

[8] M‏ ‏.A. Bahmani, K. Niayesh and A. Karimi, 3D Simulation of magnetic field distribution in electromagnetic forming systems with field‏-shaper, J. Mat. Proc. Tech, March 2009, Vol. 209, pp.2295-23011.

DOI: 10.1016/j.jmatprotec.2008.05.024