Multi-physical Field Environment Characterization of Projectiles in Large-Caliber Railgun Launching
The current research on railguns is mainly focused on small-caliber railguns,lacking an un-derstanding of the multi-physical field environment characterization of projectiles during the launching process of large-caliber railguns.Therefore,this paper develops a dynamic simulation model for the inte-grated projectile launching by large-caliber railgun,fully considering practical factors such as contact char-acteristics,material property changes and structural deformations among components.The spatial and temporal distribution characteristics of the electromagnetic,temperature,and structural fields of the launching components during the launch process are also discussed.Finally,based on the simulation re-sults,the reliability of the projectile is evaluated.The research results indicate that the 130 mm railgun can accelerate a 26 kg projectile to 1 023 m/s,with a maximum overload of approximately 6 700g.In ad-dition,at the moment when the projectile exits the muzzle,the induced current of the fuse and the stress on the TNT powder charge will sharply increase,posing possible safety hazards to the projectile.Howev-er,the temperature field has a relatively insignificant impact on the projectile.
large-caliber railgunintegrated projectiledynamic launchmulti-physical field
NETL
NSTL
万方数据
维普
