Abstract：In order to study the action mechanism of magnetic field of a coil to restraint deformation of a shaped charge jet (SCJ), the theoretical models of magnetic flux intensity distribution, induced current density distribution and electromagnetic force density distribution in a SCJ under the action of pulse magnetic field of a magnet exciting coil were proposed. The finite element (FE) model for the coil to restraint deformation of SCJ was established considering the electromagnetic-temperature-structure multi-physical field coupling analysis. The FE analysis results were verified with tests. The results showed that SCJ can be effectively restricted by the magnetic field of the coil; electromagnetic force doing work and Ohmic heating effect’s cumulation make SCJ generate effective deformation and become more uniform; the fracture process of necking down part of SCJ can be delayed, and the penetrating capacity of high explosive anti-tank cartridge can be enhanced.
孟学平，雷彬，向红军，吕庆敖，黄旭. 励磁线圈磁场约束金属射流变形的作用机理研究[J]. 振动与冲击, 2017, 36(24): 195-203.
MENG Xue-ping, LEI Bin, XIANG Hong-jun, LV Qing-ao, HUANG Xu. Action mechanism of a magnet exciting coil’s magnetic field to restraint deformation of a SCJ. JOURNAL OF VIBRATION AND SHOCK, 2017, 36(24): 195-203.
