Simulation Analysis of Engraving Process of Cartridge Belt Under Condition of Ablation and Wear of Gun Barrel
To investigate the force and dynamic response of the gun barrel rifling during the process of belt engraving under different wear states,based on the Johnson Cook Constitutive equation model,the barrel model under different wear conditions was established,and the finite element display analysis was used to solve the missile gun coupling model.The results of the force on the belt and the motion response of the projectile under different wear states of the barrel were obtained,including the motion curves of the projectile's velocity,acceleration,and normal displacement during the squeezing process.As can be seen from the simulation results:uneven wear of the rifling can cause significant radial displacement and vibration during the process of projectile engraving,and the erosion pits and cracks caused by erosion will exacerbate this phenomenon.But the axial velocity and displacement change smoothly,and the acceleration is greatly affected by the bottom pressure.
万方数据
维普
