线膛身管建模方案及弹炮耦合问题研究

Study on FEM Model Built Method of Rifle Barrel with Initial Bend and Projectile-barrel Coupling Problem

为解决线膛身管有限元建模依赖专业软件Hypermesh的问题,提出基于ABAQUS和Matlab软件的联合建模方案,研究具有初始挠度线膛身管有限元建模流程。基于Von Misses屈服准则和Johnson-cook强化模型,建立考虑弹带弹塑性和身管初始挠度的弹炮耦合模型,分析弹丸在膛内的运动规律。结果表明:考虑身管自重弯曲后,弹炮耦合作用加剧,身管弯曲对弹丸横向和纵向运动均有明显影响。

Aimed at the fact of finite element method(FEM)building of rifled barrel relying on the professional software Hypermesh,the combination FEM model building scheme based on ABAQUS and Matlab software was proposed,and the FEM building flow process of rifled barrel with initial bend was researched.Based on Von Misses yield criterion and Johnson-cook plastic strengthen criterion,the projectile-barrel coupling model considering bearing band with elastic-plastics and rifled barrel with initial bend was built,and the movement of projectile in barrel was analyzed,the result shows that:considering the barrel self weight bend,the function of projectile-barrel coupling became serious,and both level and vertical orientation were effect by the bend of barrel.