固体发动机跌落导致异物侵彻过程数值仿真研究
Numerical simulation of foreign body penetration process caused by solid motor drop
杨钧森 1武毅 1马正正 1范颖楠 1金丰凯 1吴海波1
作者信息
- 1. 北京理工大学 宇航学院,北京 100081
- 折叠
摘要
含能材料在撞击、摩擦等刺激下易发生点火甚至爆炸等危险现象,而固体火箭发动机内部含有大量推进剂装药,在导弹发射失败、吊装过程跌落、生产运输过程中的翻覆与碰撞等实际场景中存在安全事故风险,此时发动机受到剧烈撞击,引起装药内部压力变化,甚至造成燃烧爆炸,将会对周围环境和人员造成严重的威胁.针对固体发动机安全性问题,使用数值模拟方法进行研究,特别开展了跌落至凸起地面和跌落伴随金属杆件侵彻等更贴近实际情景的仿真计算,得出了在不同工况条件下固体发动机装药的压力、应力、反应度等结果,经安全性评估认为,本研究中计算的所有工况均不会发生爆炸.
Abstract
Energetic materials are prone to ignition and even explosion under stimuli such as impact and friction,while solid rocket motor contains a large amount of propellant charges.In practical scenarios such as missile launch failure,falling during lifting,overturning and collision during production and transportation,there is a risk of safety accidents.At this time,the motor is severely impacted,causing changes in internal pressure of the charge,and even causing combustion and explosion,it will pose a serious threat to the surrounding environment and personnel.This study focuses on the safety issues of solid rocket motor and uses numerical simulation methods to conduct research.In particular,simulation calculations that are closer to actual scenarios such as falling to raised ground and falling accompanied by metal rod penetration were carried out.The pressure,stress,reactivity,and other results of the solid rocket motor charge under different operating conditions were obtained.After safety evaluation,it is believed that all operating conditions calculated in this study will not explode.
关键词
固体发动机/跌落安全性/有限元分析/侵彻/点火增长模型Key words
solid motor/dropping safety/finite element analysis/penetration/ignition growth model引用本文复制引用
出版年
2024
NETL
NSTL
万方数据