摘要
为研究硝基胍发射药配方和压伸工艺对挤出成型尺寸的影响问题,建立了不同配方硝基胍发射药压伸过程数学模型及边界条件,用有限元方法仿真计算,得到了不同配方条件下流动过程的剪切速率场、压力场以及速度场分布情况。结果表明,发射药实际外径尺寸(8.03 mm)与仿真尺寸(8.38 mm)基本一致,误差为4.36%,外弧厚误差为7.89%,内弧厚为3.10%,孔径误差为9.26%,中心孔径误差为5.36%,误差均小于10%。
To investigate the problem about effect of formulations and extrusion process of nitroguanidine gun propellant on the extrusion molding size,the mathematical model and boundary conditions of extrusion process for nitroguanidine gun propellant with different formulations were established. The distribution siteration of shear rate field,pressure field and velocity field in different flow process under the condition of different formulations were simulated,calculated and obtained by the finite element method. The results show tha the actual outer diameter of 8. 03 mm and simulation size of 8. 38 mm of the propellant is basically the same,its error is 4. 36%. The error of outer web size（ 7.89%）,inner web size（ 3. 10%）,pore size（ 9. 26%） and center pore size（ 5. 36%） etc parameters is within 10%.
出处
《含能材料》
EI
CAS
CSCD
北大核心
2017年第2期106-112,共7页
Chinese Journal of Energetic Materials
基金
国防科工局基础产品创新计划(火炸药专项A26201333007)
国防基础科研计划
关键词
硝基胍发射药
数值仿真
压力和速度分布
剪切速率
压伸工艺
nitroguanidine gun propellant
numerical simulation
shear rate
pressure and velocity field
extrusion process
