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Deformation Mechanism of Metal Plate on Explosive Forming

[+] Author Affiliations
Hirofumi Iyama

Yatsushiro National College of Technology, Yatsushiro, Kumamoto, Japan

Takeshi Hinata, Shigeru Itoh

Kumamoto University, Kurokami, Kumamoto, Japan

Paper No. PVP2005-71560, pp. 205-210; 6 pages
doi:10.1115/PVP2005-71560
From:
  • ASME 2005 Pressure Vessels and Piping Conference
  • Volume 4: Fluid Structure Interaction
  • Denver, Colorado, USA, July 17–21, 2005
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 0-7918-4189-8 | eISBN: 0-7918-3763-7
  • Copyright © 2005 by ASME

abstract

The explosive forming is one of the forming methods of a metal plate performed since the 1950s. This method is different from usual static press forming. The metal plate is accelerated by underwater shock wave, which is generated by underwater explosion of an explosive. In order to deform a metal plate in predetermined form with sufficient accuracy using this forming method, it is important to grasp the mechanism. At first, it is necessary to grasp that an underwater shock wave spreads and it collides with the metal plate. And it is also necessary to show clearly what deformation of the metal plate with high-speed. Then, we investigated about the mechanism in the numerical simulation. In this research, LS-DYNA, which is the software for shock analysis was used. Moreover, the experiment was also conducted in order to confirm whether this numerical simulation is exact.

Copyright © 2005 by ASME

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