弹道学报2024，Vol.36Issue(2)：82-89,8.DOI:10.12115/j.issn.1004-499X(2024)02-011
嵌入后退式子母弹高速分离安全性评价方法
Security Evaluation Method of High-speed Separation for Embedded-backward Ejection Submunition
摘要
Abstract
During the separation process of embedded-backward submunition,the bullet enters a semi-constrained state when the rear and middle hangings detach from the guideway.Therefore,the movement attitude of the bullet is significantly affected by the carrier vehicle.The contact collision between the hanging and the guideway,as well as the aerodynamic interference of the carrier vehicle on the bullet,have great influences on the separation process.In order to provide important theoretical support for the design of the submunition high-speed separation system and achieve safe separation of the submunition,a high-precision space-time numerical simulation security evaluation method of the high-speed separation for submunition were proposed.Based on the constructed aerodynamic response surface model and the variable-configuration variable-mass multibody dynamics model of the submunition,the multibody-aerodynamic fluid-structure coupling high-precision space-time numerical simulation platform for the variable-configuration variable-mass combination of the separation process for submunition was established.Different initial boundary conditions were applied to the fluid-structure coupling dynamics model and simulation was carried out to obtain the attitude parameter of the submunition separation process Then,the separation safety of the submunition dynamically evaluated,and the safety initial boundary conditions of the submunition separation was obtained.It can provide a quantitative design basis for formulating technical measures that are conducive to improving the safety of high-speed separation of submunition.Through simulation example and test,it is shown that the constructed high-precision space-time numerical simulation platform for high-speed separation of submunition has high accuracy and credibility.The research results provide important engineering value for the security design of high-speed separation for submunition.关键词
子母弹/高速分离/变构型/变质量/流固耦合/安全性评价Key words
submunition/high-speed separation/variable-configuration/variable-mass/fluid-structure coupling/security evaluation分类
军事科技引用本文复制引用
刘广,俞刘建,李微微,许斌,张保刚,葛志闪..嵌入后退式子母弹高速分离安全性评价方法[J].弹道学报,2024,36(2):82-89,8.基金项目
国家自然科学联合基金(U20B2007) （U20B2007）
