摘要
针对现役小口径炮弹引信大着角碰靶发火率偏低、未爆弹存在隐患的可靠性与安全性问题,开展现役小口径炮弹引信大着角碰靶发火机构响应特性研究.建立了大着角碰靶发火机构的动力学模型,得到了发火机构作用的简易判据,基于有限元数值模拟方法,模拟了不同着速、着角、滚转角度及靶板厚度多工况下大着角碰靶发火机构的动态响应过程,数值模型有效性通过实弹试验对比验证.分析结果表明,着发球珠随机滚转角度为大着角碰靶时影响发火机构功能可靠的重要因素之一;随滚转角度增大,发火击针感受到轴向合力的幅值越小、时间越滞后,不利于大着角碰靶发火机构可靠作用;同时研究发现随着角、靶板厚度的增加,出现了导套“卡住”发火击针的故障模式.
Aiming at the reliability and safety problems of low firing rate and hidden dangers of UXO at large incident angle of active small caliber projectile fuze, the response characteristics of firing mechanism of small caliber projectile impact fuze were studied. In this paper, the dynamic model of the firing mechanism with large incident angle was established, and the simple criterion of the action of the firing mechanism was obtained.Based on the numerical simulation method, the dynamic response process of the firing mechanism with large incident angle under multiple working conditions, including different impact speeds, incident angles, rolling angles and target plate thicknesses, was simulated. The effectiveness of the numerical model was verified by shooting tests. The analysis results show that the random rolling angle of the hitting ball is one of the important factors affecting the functional reliability of the firing mechanism when hitting the target at a large incident angle;the smaller the amplitude of the counter impact force, the slower the response time of the axial resultant force, which is unfavorable to the reliable function of the firing mechanism. Meanwhile, it is found that with the increase of the incident angle of the fuze and the thickness of the target plate, the failure mode of “jamming” of the guide sleeve and the firing pin appears.
作者
娄文忠
何博
秦进
杨庭琪
冯恒振
吕斯宁
苏文亭
张明荣
LOU Wenzhong;HE Bo;QIN Jin;YANG Tingqi;FENG Hengzhen;LÜ Sining;SU Wenting;ZHANG Mingrong(School of Mechatronical Engineering,Beijing Institute of Technology,Beijing 100081,China;Chongqing Innovation Center,Beijing Institute of Technology,Chongqing 401120,China;Chongqing Changan Wangjiang Industrial Group Co.,LTD.,Chongqing 401120,China;School of Mechatronical Engineering,North University of China,Taiyuan,Shanxi 030051,China)
出处
《北京理工大学学报》
EI
CAS
CSCD
北大核心
2023年第2期118-125,共8页
Transactions of Beijing Institute of Technology
基金
国家部委基础科研计划项目(JCKY2019602B004)
中国博士后科学基金资助项目(2021M700419)。
关键词
小口径炮弹引信
大着角
发火机构
响应特性
动力学模型
数值模拟
small caliber projectile fuze
large incident angle
firing mechanism
response characteristics
dy-namic model
numerical simulation
