A Study on the Projectile-barrel Coupling Based on Contact Model

A dynamic model for the projectile-barrel coupling was established based on the theory of contact.The barrel was divided into some rigid segments,which are linked by massless beams at the center of mass.Forces and moments were calculated based on the beam theory of Timoshenko.The contacts of band with rifle and of foreside with rifle and the action of rifle torsion on band were considered.Under the above-mentioned conditions,the motion of projectile in the bore was simulated by numerical method.The results show that the dynamic model can reflect the dynamic behavior of the projectile moving in the barrel and be used to investigate the projectile-barrel coupling problem.