RESEARCH ON THE DEFORMATION OF DIE PINS DURING PROPELLANT’S EXTRUSION PROCESS

机译：推进剂挤压过程中模针变形的研究

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The phenomenon that the holes change the position caused by the pins moving exists in7-perforation propellant extruded by the solvent mothed. In this paper, the analysis of theforming process based on fluid-structure interaction method of mode pins moving wasstudied. The pressure distribution of extrusion process was analyzed and the effect oftemperature and velocity on the pins deformation was analyzed. Three dimension videomicroscopy was used to measure the web sizes of the propellant grains. The results show thatmaximum deformation of die pins present a quasi-linear increase trend with the speedincrease. When the entrance velocity is faster than 0.4mm·s-1, increase rate of deformation isreduced. Deformation presents linear decreasing trend with the propellant doughtemperature increase. The Nitroguanidine propellant is extruded by seven-perforation die indifferent experiment conditions. The experimental data and numerical simulation results fitwell.

机译：孔改变引脚移动引起的位置的现象存在7-穿孔推进剂被溶剂挤出。在本文中，分析了基于流体结构相互作用方法的形成过程研究过。分析了挤出过程的压力分布，效果分析了别针变形上的温度和速度。三维视频显微镜检查用于测量推进剂颗粒的幅材尺寸。结果表明模具引脚的最大变形呈现了速度的准线性增加趋势增加。当入射速度快于0.4mm·S-1时，增加变形率减少。变形呈现线性降低趋势与推进剂面团温度升高。硝基胍推进剂通过七穿模具挤出不同的实验条件。实验数据和数值模拟结果适合好。

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《International symposium on ballistics》|2017年|xxxi 1327 p.|共8页
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Ji Dan-dan; Chen Fei-yun; Lv Sheng-tao;
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中图分类枪炮弹道学;
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RESEARCH ON THE DEFORMATION OF DIE PINS DURING PROPELLANT’S EXTRUSION PROCESS

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