Investigation of the Effect of Explosive Welding Parameters on Aluminum–Steel Bimetals: A Numerical Approach

Abstract

This study tried to show the quantitative impact of explosive parameters (explosive ratio, standoff distance and orientation, and thickness of the flyer) on the explosive welding quality. Based on the ANSYS AUTODYN software version 2019 R3 package, 27 tests were performed by iterating those three explosive parameters. It was observed that jetting, which is essential for the bonding mechanism in explosive welding, occurs when the explosive ratio becomes high. Unlike the explosive ratio, the standoff distance is inverse to the impact pressure. Relatively, although the flyer plate thickness varies, this investigation cannot discern any discernible variation. Therefore, the effect of flyer plate thickness is found to be insufficient. It can be deduced that explosive welding with an explosive ratio of 2 set at a 3-mm standoff distance and a 2-mm flyer plate thickness with an inclined orientation can produce better results.