Armatures Expanding Numerical Simulations of Magnetic Flux Compression Generators
Magnetic flux compression generators (MFCG) is a device to supply a high pulse power by using explosives driven metal armatures to rapidly compress strong magnetic field. The expansion characteristic of the armature is one of the most critical parameters affecting the efficiency of MFCG In order to investigate the performances of the armature expansion, the numerical simulation study on the armature expansion process was conducted by LS-DYNA hydrodynamic code. The calculation model takes into account the infection of magnetic force on the armatures. The armature deformation under explosives loading is gained. The radial expansion velocity, radial expansion displacement, expansion angle and broken radius of the armature, and the time and location of contact between the armature and stator coils were calculated. The factors affecting the metal armature expansion characteristics were discussed. The study results show that the peak value of the radial expansion velocities is not change. The expansion characteristics of the aluminum armature are better than that of copper.
magnetic flux compression generator armatures expansion explosives numerical simulation
WU Junying CAI Wenjian CHEN Lang FENG Changgen
State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China
国际会议
西安
英文
709-714
2007-10-23（万方平台首次上网日期，不代表论文的发表时间）