Japan Explosive Society
Dr. Masatoshi Nishi
Research on Explosive Forming of Magnesium Alloy Plate using Numerical Simulation and Experimental Studies (II)
Dr. Masatoshi Nishi presented "Research on explosive forming of magnesium alloy plate using numerical simulation and experimental studies (II)" in Science and Technology of Energetic Materials.
Magnesium alloys are lightweight, high-strength materials that are expected to find a variety of applications.
However, magnesium alloys are difficult to plasticize at room temperature and are corrosive and flammable, resulting in increased processing costs and other problems.
This paper reports the results of a study of a method for processing room-temperature magnesium alloys by the explosion forming method.
In conventional explosion forming methods, concave striking dies are mainly used, but in this paper, a convex die is used and applied to V-shaped bending of magnesium alloy sheets.
When the die inclination was steep, it was difficult to obtain good forming results because of wrinkles and cracks in the alloy discs.
In this study, a method was proposed to control the pressure wave applied to the disk by changing the placement of the explosives. He conducted experiments and demonstrated its feasibility.
Furthermore, in this study, the time history of the pressure distribution acting on the disk and the deformation process of the disk were studied in detail using numerical analysis.
Dr. Masatoshi Nishi's research is a detailed study of explosion forming processing methods, both experimentally and numerically, and proposes a new forming method.
The results of this research are highly evaluated, and are a significant contribution to the Japan Explosives Society, and are worthy of the Japan Explosives Society Encouragement Award.