Modeling and Simulation of Gun Barrel´s Lateral Vibration

Gun´s vibration during its shooting makes projectile impact bore much more fiercely, which cause projectile´s initial disturbance and affect gun´s firing accuracy. Among gun´s multiform vibrations, lateral vibration has the maximal influence to firing accuracy. The paper builds simulation model of gun barrel´s lateral vibration based on finite element method and ascertain the equations of gun barrel´s lateral vibration under multi-load. Using some type gun as the example of simulation test, displacement response curves of gun barrel´s lateral vibration are obtained. It can be found that simulation results are accordant with measured response curve of muzzle´s displacement. Therefore, the simulation results can be used for trajectory´s correction of this type gun, while those results can help us estimate initial disturbance´s influence to gun´s firing accuracy.