Our website uses cookies. By using the website you agree ot its use. More information can be found in our privacy policy.


A railgun consists of two parallel metal rails connected to an electric power supply. The projectile completes the circuit. The current flowing through the rails and projectile generates a magnetic field which in turn generates a Lorentz force propelling the projectile out of the barrel at a very high speed. This problem serves as an example to illustrate the EM contact. Current is allowed to flow through conductors by 'stitching the BEM meshes of the various parts together. As such, it is highly recommended to re-compute the BEM matrix often to ensure stability.