A NOVEL RAILGUN SIMULATION MODEL BASED ON A QUASISTATIC

This paper presents a novel simulation model for railguns, derived from a quasistatic study performed in COMSOL Multiphysics. Simulating railgun dynamics is complex due to significant magnetic field gradients and large geometries. Previous research work on analytical and Finite Element Method (FEM) models presents some limitations, which the presented methodology addresses by developing a more precise and flexible model. A parametric analysis is performed to evaluate the flux linkage, the force exerted over the armature, and the system’s resistance and inductance for various positions and currents. Once the railgun has been characterized, the transient problem is solved coupling the results from the parametric study with the equivalent circuit of the system