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. ©2009 IEEE.