Evaluation of friction due to deformed behaviour of rail in the electromagnetic railgun: numerical investigation

Abstract

The dynamic behaviour and evaluation of friction due to deformed behaviour of rail in the electromagnetic rail gun under accelerating loading are investigated by us-ing the finite element method. The simplified uncoupled rail-projectile contact model is applied, where action of the projectile is described as given moving loading. The di-mension-less friction ratio is suggested to evaluate the in-crease of the friction during motion of the load.