An Equivalent Circuit Model of a Solenoidal Compressed Magnetic Field Generator

Abstract

Small explosively driven solenoidal compressed magnetic field units can transduce appreciable pulses of electrical energy. A reasonably “fast” computer model represents an extremely valuable tool in the search for parameter optimization because experiments are time consuming, destructive and expensive.

The model described is of equivalent circuit form. Magnetic energy loss to the expanding armature is evaluated through solutions of the nonlinear magnetic diffusion equation and loss to the solenoid by way of coil ac theory. Basic armature dynamics are derived from experiments or hydrocode study. Perturbation of the dynamics and deformation of the coil occurs through the generation of appreciable magnetic pressures.

Examples of code results are given together with comparisons with experimental data.