Experimental Investigation and Finite Element Analysis on Electromagnetic Compression Forming Processed Aluminum Alloy Tubes

Abstract:

Electromagnetic forming (EMF) is a high energy rate forming (HERF) process. It is a high speed forming process using a pulsed magnetic field to form work pieces made of metals such as copper or aluminum alloys with high electrical conductivity. The work piece to be deformed will be located within the effective area of the tool coil so that the resulting type of stress during the forming process is determined by the type of coil used and its arrangement as related to the component. Tubular or structural components can be narrowed by means of compression coils or widened by means of expansion coils, where as sheet metal can be deformed by flat coils. In this work, the experimental investigation and simulation of electromagnetic compression forming of aluminum alloy tubes is studied. The aim of the paper was to verify the results from Finite element methods with experimental data. Experiments were conducted on Tubes of outer diameter 40 mm and wall thickness of 2 mm with a nominal tensile strength of 214 MPa. The tube was compressed using a 4 turn helical actuator discharge that can be energied up to 20 kJ. A field shaper made of aluminum was used. A Maximum reduction of 15.85% in diameters were measured. The same problem was simulated in ANSYS using static coupled electromagnetic analysis. The results of the Simulation showed good correlation with experimental results.

• Periodical: Applied Mechanics and Materials (Volumes 110-116)
• Pages: 1706-1710
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.110-116.1706
• Online since: October 2011
• Authors: Selvam Rajiv, Karibeeran Shanmuga Sundaram, Pablo Pasquale
• Keywords: Aluminium Alloy, Electromagnetic Forming, Finite Element Analysis (FEA)

References

[1] Kleiner, M., Geiger, M., Klaus, A., Manufacturing of Lightweight components by metal forming, University of Dortmund, Dortmund, Germany & Chair of manufacturing Technology, University Erlangen-Nuremderg, Germany.

DOI: 10.17973/mmsj.2021_7_2021070

[2] PSTProducts GmbH, Junkersstrasse 1, 63755 Alzenau, Germany. www. pstproducts. com.

[3] Daehn, G.S., Shang, J.H., Vohnout, V.J., 2003. Electromagnetically assisted sheet forming: enabling difficult shapes and materials by controlled energy distribution. In: Anderson, I.E., Marechaux, T.G., Cockrill, C. (Eds. ), Proceedings of the Energy Efficient Manufacturing Processes. The Minerals, Metals & Materials Society (TMS), pp.117-128.

[4] Kamal, M., 2005. A uniform pressure electromagnetic actuator for forming flat sheets. Ph.D. Dissertation. Ohio State University, pp.29-78.

[5] Seth,M., Vohnout, V.J., Daehn, G.S., 2005. Formability of steel sheet in high velocity impact. J. Mater. Proc. Technol. 168, 390-400.

DOI: 10.1016/j.jmatprotec.2004.08.032

[6] Neugebauer, R., Loschmann, F., Putz, M., Koch, T., Laux, G., 2006. A Production-oriented approach in electromagnetic forming of metal sheets. In: Kleiner, M. (Ed. ), Proceedings of the second International Conference on High Speed Forming. Dortmund, Germany, pp.129-139.

[7] Miracle, D. B. et al.: ASM Handbook: Composites. Edition: 10, ASM International, (2002).

[8] Prakash alapati, S.S., Kulkarni, S.V., 2009, Coupled Magnetic-Structural Finite Element Analysis, Excerpt from the proceedings of the COMSOL conference Bangalore.

[9] Vivek, A., Kim, K-H., Daehn, G.S., Simulation and Instrumentation of Electromagnetic Compression of Steel Tubes. The Ohio State University, 2041, College Road, Columbus, OH, 43201.