Affiliation:
1. Naval Aeronautical and Astronautical University
Abstract
Under the pulse current, the lateral electromagnetic force on the shaped charge jet in the passive electromagnetic protective device is analyzed. Based on the equivalent circuit model, the current distribution model of metal plate is established according to the characteristic of current distribution proposed by Hummer. The lateral transient action model of a shaped charge jet is established based on the Biot Savart law. It is discussed in detail that the magnetic induction By of the shaped charge jet between two metal plates and the lateral electromagnetic force fx on the shaped charge jet varies with time and location. By shows U distribution along the jet axial. Before the 37μs, fx along the jet axial basically is M distribution; the maximum electromagnetic force appears in the distance near the site of the metal plates. After the 37μs, the lateral electromagnetic force along the jet axial basically is U distribution. Prior to 25μs, the total electromagnetic force Fx on the jet is approximately linear increase. In 25μ to 60μs, Fx maintains at a high level. The simulation result is identical with P. Appelgren’s result of static electrically-exploded conductors experiment.
Publisher
Trans Tech Publications, Ltd.
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