The dynamic response of a high-density polyethylene slow-release structure under launching overload

作     者：Ke-Bin Zhang Wen-Bin Li Yu Zheng Wen-Jin Yao Chang-Fang Zhao Ke-Bin Zhang;Wen-Bin Li;Yu Zheng;Wen-Jin Yao;Chang-Fang Zhao

作者机构：School of Mechanical EngineeringNanjing University of Science and TechnologyNanjing210094China 

出 版 物：《Defence Technology（防务技术）》 (Defence Technology)

年 卷 期：2023年第26卷第8期

页      面：143-156页

核心收录：

学科分类：1101[军事学-军事思想及军事历史] 08[工学] 0826[工学-兵器科学与技术] 082603[工学-火炮、自动武器与弹药工程] 

主　　题：Artillery ammunition HDPE Finite element analysis Slow-release structure Threaded connection 

摘      要：Based on the 60 mm artillery grenade,a slow-release structure was designed to reduce the severity of ammunitions response to accidental thermal stimulation and improve the thermal stability of ammunitions.The slow-release structure was made of high-density polyethylene(HDPE) and connected the fuse and the projectile body through internal and external threads.To study the safety of the slowrelease structure under artillery launching overload,mechanical analysis of the slow-release structure was simulated via finite element analysis(FEA).The impacts of various factors(e.g.,fuse mass,number of threads,and nominal diameter of internal threads of the slow-release structure) on the connection strength of the slow-release structure were studied.A strength-prediction model based on the fuse mass and internal thread parameters was established by fitting the maximum effective stress of the slowrelease structure.This led to good prediction results.In conclusion,this study provides references and theoretical support for the design of thermal protection structures insensitive to ammunition.