A FEM Study of Explosive Welding of Double Layer Tubes

Authors: R. Alipour, F.Najarian

Abstract:

Explosive welding is a process which uses explosive detonation to move the flyer plate material into the base material to produce a solid state joint. Experimental tests have been carried out by other researchers; have been considered to explosively welded aluminium 7039 and steel 4340 tubes in one step. The tests have been done using various stand-off distances and explosive ratios. Various interface geometries have been obtained from these experiments. In this paper, all the experiments carried out were simulated using the finite element method. The flyer plate and collision velocities obtained from the analysis were validated by the pin-measurement experiments. The numerical results showed that very high localized plastic deformation produced at the bond interface. The Ls_dyna_971 FEM has been used for all simulation process.

Keywords: Explosive Welding, Johnson-Cook Equation, Finite Element, JWL Equation.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1330245

References:

[1] T.Z. Blazynski, "Explosive Welding, Forming and Compaction, Applied Science", London (1983).
[2] G.R. Cowan and A.H. Holtzman, "Flow Configuration in Colliding Plates: Explosive Bonding", J. Appl. Phys, Vol 34, pp 928- 939, 1963.
[3] H.K. Wylie, P.E.G. Williams and B. Crossland, "Further Experimental Investigation of Explosive Welding Parameters", Proc. 1st Int. Sym. on Use of New Properties and Possibilities of Application thereof in the Chemical Industry, pp. 45-70, 1970.
[4] A. Szecket, "An Experimental Study of the Explosive Welding Window", Ph.D. Thesis, (1979).
[5] R.H. Wittman, "The Influence of Collision Parameters on the Strength and Microstructure of an Explosion Welded Aluminum Alloy", Proc. 2nd Sym. on Use of Explosive Energy in Manufacturing Metallic Materials of New Properties and Possibilities of Application thereof in the Chemical Industry, pp. 153-168, 1973.
[6] A.A. Deribas, V.A. Simonov and I.D. Zakharenko, "Investigation of Explosive Welding Parameters for Arbitrary Combinations of Metals and Alloys", Proc. 5th Int. Conf. on High Energy Rate Fabrication, pp. 4.1.1-4.1.24, 1975.
[7] G. L. Lazari and S. T. S. Al-Hassani,. "Solid Mechanics Approach Explosive Welding Composite, Proc. 8th Int. Conf. on High Energy Rate Fabrication, San Antonio,1984.
[8] A. Oberg, J.A. Schweitz and H. Olfsson H. "Modelling of the Explosive Welding Process, Proc. 8th Int. Conf. on High Energy Rate Fabrication, pp. 75-84, 1984.
[9] Akihisa A. B. E., "Numerical study of the mechanism of a wavy interface generation in explosive welding", JSME Int. J., Series , Vol 40(3), 1997, PP 395-401.
[10] Souers. P. C., Haselman. L. C., "Detonation Equation of States at LLNL", 2003, Lawrence Livermore National Laboratory.
[11] Meyers. M. A., "Dynamic Behavior of Materials", Wiley Interscience, Vol 40, 2004, PP. 327-328.
[12] Banerjee. B., "The Mechanical Threshold Stress model for various tempers of AISI 4340 steel" Preprint submitted to Elsevier Science, 29 August 2005.