摘要
针对火炮膛线随着发弹数量不断磨损的问题,基于Johnson-Cook本构模型建立两种不同磨损量的某火炮膛线磨损有限元模型,运用有限元仿真软件LS-dyna的显式数值积分算法进行数值模拟仿真计算,得到了弹带在挤进不同程度的火炮膛线磨损量时的阻力和运动状态一般规律。仿真结果表明:膛线磨损后阻力的敏感点主要在挤进阶段,挤进位置处膛线的磨损对火炮的发射稳定与装药安全起重要作用。计算结果可为火炮的设计、保养、清洗和发射稳定性与安全性提供重要的参考。
Aiming at the problem of continuous wear of the rifling of the artillery with the increase in the number of fired ammunition,based on the Johnson-Cook constitutive model,two finite element models of the rifling wear of a certain artillery with different amounts of wear were constructed.The explicit numerical integration algorithm of the finite element simulation software LS-dyna is used for numerical simulation calculation,and the general law of the resistance and movement state of the belt when squeezed into different degrees of artillery rifling wear is obtained.The simulation results show that the sensitive points of resistance after rifling wear are mainly in the squeezing phase,and the rifling wear at the squeezing position plays an important role in the firing stability of the artillery and the safety of charging.The calculation results can provide important references for the design,maintenance,cleaning,and launch stability and safety of the artillery.
作者
姜啸天
郝永平
张嘉易
JIANG Xiao-tian;HAO Yong-ping;ZHANG Jia-yi(School of Mechanical Engineering,Shenyang Ligong University,Shenyang 110159,China;Liaoning Province Key Laboratory of Advanced Manufacturing Technology and Equipment,Shenyang Ligong University,Shenyang 110159,China)
出处
《机械工程与自动化》
2021年第5期85-87,共3页
Mechanical Engineering & Automation
关键词
火炮磨损
挤进过程
数值分析
仿真
artillery wear
extrusion process
numerical analysis
simulation
