穿爆弹丸装药摩擦起爆特性数值模拟  

Numerical simulation of friction initiation characteristics of armour-piercing explosive projectile

作　　者：章猛华 阮文俊[3] 于霜[1] ZHANG Menghua;RUAN Wenjun;YU Shuang(Suzhou Institute of Industrial Technology,Suzhou 215104,China;School of Physical Science and Technology,Soochow University,Suzhou 215006,China;School of Energy and Power Engineering,Nanjing University of Science and Technology,Nanjing 210094,China)

机构地区：[1]苏州工业职业技术学院,江苏苏州215104 [2]苏州大学物理科学与技术学院,江苏苏州215006 [3]南京理工大学能源与动力工程学院,南京210094

出　　处：《兵器装备工程学报》2024年第12期33-38,52,共7页Journal of Ordnance Equipment Engineering

基　　金：江苏省高等学校基础科学(自然科学)研究重大项目(22KJA460008);江苏省高职院校教师企业实践培训项目(2024QYSJ078)。

摘　　要：为了优化穿爆弹丸靶后延迟释能特性,建立了装药摩擦起爆的温升模型,并结合非线性有限元分析软件和FEM-SPH算法对装药摩擦温升进行求解,得到使用不同弹芯和装药时弹丸穿靶的装药摩擦温升曲线。结果显示:在弹芯结构不变的情况下,使用钨合金弹芯时装药温升与钢弹芯相差不大,但钨合金弹芯使装药的摩擦温升速率更慢,起爆时间更晚,更有利于达成靶后延迟释能的目标;装药的摩擦温升速率随炸药的导热系数增大而变快,使用导热系数小的装药更有利于实现靶后的延迟释能;针对双锥形弹芯,在双锥角度和质量不变的情况下,增加弹芯直径,更有利于实现装药起爆及靶后延迟释能。In order to optimize the delayed energy release characteristics of the armour-piercing explosive projectile,a temperature rise model for the frictional initiation of the charge was established.Nonlinear finite element analysis software and the FEM-SPH algorithm were used to solve the frictional temperature rise of the charge.The frictional temperature rise curves of the charge were obtained when the projectile penetrates the target with different bullet cores and charges.The results show that with a constant core structure,the temperature rise of the charge using tungsten alloy cores is comparable to that of steel cores.However,tungsten alloy cores exhibit a slower rate of temperature rise due to friction and a later ignition time,which is more conducive to achieving the goal of delayed energy release after penetration.The rate of temperature rise due to friction in the charge increases with the thermal conductivity of the explosive;therefore,using explosives with lower thermal conductivity is more beneficial for achieving delayed energy release after penetration.For the case of a double-conical projectile core,under conditions of constant cone angle and mass,increasing the diameter of the core facilitates explosive ignition and enhances the potential for delayed energy release after penetration.

关 键 词：热爆炸 摩擦热 数值模拟 延迟起爆 

分 类 号：TJ410.3[兵器科学与技术—火炮、自动武器与弹药工程]