枪械击发点火系统的点火可靠性仿真分析  

Simulation Analysis of Ignition Reliability of Firearm Firing⁃ignition Systems

作　　者：张树霞[1] 李一蕊 魏志芳[1] 王志军[1] 张克斌 朱亚辉 ZHANG Shu-xia;LI Yi-rui;WEI Zhi-fang;WANG Zhi-jun;ZHANG Ke-bin;ZHU Ya-hui(School of Mechanical and Electrical Engineering,North University of China,Taiyuan 030000,China;No.208,Research Institute of China Ordnance Industries,Beijing 102202,China)

机构地区：[1]中北大学机电工程学院,山西太原030000 [2]中国兵器工业第二〇八研究所,北京102202

出　　处：《含能材料》2024年第11期1194-1205,共12页Chinese Journal of Energetic Materials

基　　金：国家自然科学基金(62003314)。

摘　　要：为了提高枪械击发点火系统的点火可靠性,研究以一种小口径步枪击发点火系统为研究对象,设计系统模拟试验装置,开展了系统点火性能和可靠性试验研究。在此基础上,采用拉格朗日-欧拉流固耦合方法(ALE)建立了击发点火系统的点火模型,并搭建了参数化仿真平台,以压力启动时间为点火输出性能表征参数,建立了枪械击发点火系统的点火可靠性分析模型。通过将模型计算结果与试验数据进行对比验证,并模拟研究了击发点火系统结构和装配参数变化影响下的可靠性。结果表明:枪械击发点火可靠性分析模型计算结果与试验结果误差为0.72%,模型具有较好的准确性;各因素均值变化对系统可靠性的影响规律为:击针突出量>闭锁间隙>火台头部直径>底火壳厚度>底火装入深度>击针头部直径;标准差变化对系统可靠性影响较小。这些研究结果可为枪械击发点火系统的可靠性设计提供参考。To improve the ignition reliability of firearm firing-ignition systems,the Lagrangian-Eulerian fluid-structure coupling method(ALE)was used to establish the ignition model of the firing-ignition systems,and a parametric simulation platform was built.The pressure start time was used as the ignition output performance characteristic parameter to establish the ignition reliability proxy model of the firearm firing-ignition system.The reliability of the firing-ignition systems under the influence of changes in structure and assembly parameters was simulated and studied.At the same time,based on small-caliber rifle firing-ignition system,an ignition system simulation test device was designed,and experimental research on the ignition performance and reliability of the ignition system was carried out to verify the ignition model.The results show that the error between the calculation results of the firearm firing-ignition reliability analysis model and the experimental results is 0.72%,indicating that the model has good accuracy.The influence rule of the average change of each factor on the system reliability is as follows:striking pin protrusion>locking gap>fire table head diameter>primer shell thickness>primer loading depth>firing pin head diameter.The standard deviation change has little impact on system reliability.This study provides theoretical and technical guidance for the reliability design of firearm firing-ignition systems.

关 键 词：枪械击发点火系统 点火性能 代理模型 可靠性仿真 

分 类 号：TJ5[兵器科学与技术—军事化学与烟火技术] TJ20