线膛复合身管无坐力炮的非金属弹带挤进过程数值分析  

Numerical Analysis of Process of Nonmetal Belt Extrusion of Rifled Composite Barrel Recoilless Gun

作　　者：苗军 陶钢[1] 王鹏[2] 徐宁[2] 李召[3] 王星红 王小峰 MIAO Jun;TAO Gang;WANG Peng;XU Ning;LI Zhao;WANG Xinghong;WANG Xiaofeng(School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China;The No.32381 st Troop of PLA,Beijing 100072,China;The No.63961 st Troop of PLA,Beijing 100012,China)

机构地区：[1]南京理工大学能源与动力工程学院,南京210094 [2]中国人民解放军32381部队,北京100072 [3]中国人民解放军63961部队,北京100012

出　　处：《兵器装备工程学报》2021年第8期14-21,共8页Journal of Ordnance Equipment Engineering

摘　　要：利用有限元软件LS-DYNA构建了非金属弹带挤进某复合材料身管无坐力炮的有限元模型,对几种不同材料弹带挤进过程进行了对比分析,并对弹丸发射过程中的身管应变以及扭力矩进行了动态测试,得到如下结果:非金属弹带有较好的闭气效果。改性的聚四氟乙烯弹带对挤进过程产生的阻力、弹丸运动影响均介于尼龙和聚四氟乙烯之间;弹带凹槽设计能够降低身管的应变;轻型线膛复合身管无坐力炮弹丸发射过程中,身管环向应变由膛压和弹带的冲击共同引起并且叠加形成;理论、仿真和实验得到的身管扭转冲量矩,可为身管设计提供重要的参考。In view of the performance and life problems caused by the lightweight of composite barrel gun,the finite element model of nonmetal rotating band extruding into a composite barrel recoilless gun was constructed by using the finite element software LS-DYNA.The process of various types of rotating band extrusion was compared and analyzed,and the barrel strain and torsion moment in the process of projectile launching were tested dynamically.The results are as follows conclusion:nonmetal rotating band has a good airtight effect;the influence of the modified PTFE rotating band on the resistance and projectile motion during the extrusion process was between that of nylon and PTFE;the groove design of the rotating band can reduce the strain of the barrel compared with the non slot design;the hoop strain of barrel was caused by the pressure of bore and the impact of the rotating band during the launching process of the recoilless projectile with light wire bore compound barrel.The calculation results of torsion impulse moment of gun barrel have high accuracy,which can provide reference for the design of projectile belt and barrel.

关 键 词：弹带 复合材料 无坐力炮 挤进过程 应变 冲量矩 

分 类 号：TJ32[兵器科学与技术—火炮、自动武器与弹药工程]