Abstract:

The magneto-hydrodynamic explosive loading simulation platform is used to study shock-pro- duced deformation of thin-walled metal tubes subjected to the magnetic dynamic load and electrical explo- sion, discharge waveforms of the high current and final deformation of the tubes manufactured with differ- ent materials and structures are acquired. The result shows that the high current discharge characteristics could be described well by RLC circuit process when the power is capacitor bank, the shock-produced deformation of same structure tubes is mainly affected by loading mode, and materials are heat up signifi- cantly by the Joule heat and more easily deformed, but high temperature may lead to gasification and magnetic field shaped charge jet(MSCJ) could not be formed. Low melting point or low ductility materi- als are not suitable for MSCJ made, compared with Al, the Cu material is better, compared with normal tube, truncated cone tube is more easily controlled to form MSCJ.

Key words: electromagnetics, magnetic dynamic load, electrical explosion, thin-walled metal tube, shock-produced deformation, magnetic field shaped charge jet