Analysis and Calculation of the Lateral Electromagnetic Force on Shaped Charge Jet in the Passive Electromagnetic Protective Device

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 B_y of the shaped charge jet between two metal plates and the lateral electromagnetic force f_x on the shaped charge jet varies with time and location. B_y shows U distribution along the jet axial. Before the 37μs, f_x 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 F_x on the jet is approximately linear increase. In 25μ to 60μs, F_x maintains at a high level. The simulation result is identical with P. Appelgren’s result of static electrically-exploded conductors experiment.

• Periodical: Advanced Materials Research (Volume 1098)
• Pages: 132-137
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1098.132
• Online since: April 2015
• Authors: Yong Fang Huang, Yan Jie Cao, Gang Zhou, Hui Jin Wang, Cheng Xue Wang
• Keywords: Current Distribution, Current Filament, Lateral Electromagnetic Force, Passive Electromagnetic Protective Device, Shaped Charge, Shaped Charge Jet

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