某爆炸分离装置分离过程仿真研究与设计改进  

Simulation Research and Design Improvement of the Separation Process of an Explosive Separation Device

作　　者：秦玉灵 渠弘毅 荆江[1] 王巨民[1] 李晓东 Qin Yu-ling;Qu Hong-yi;Jing Jiang;Wang Ju-min;Li Xiao-dong(Beijing Institute of Space Long March Vehicle,Beijing,100076)

机构地区：[1]北京航天长征飞行器研究所,北京100076

出　　处：《导弹与航天运载技术》2021年第1期50-55,共6页Missiles and Space Vehicles

基　　金：总装共性技术(41410050202)。

摘　　要：爆炸分离装置分离过程仿真需考虑材料破坏过程,将材料本构关系由弹塑性扩展至渐进式损伤断裂模型。为了模拟爆炸分离过程中各组件损伤破坏进程,首先将金属材料动态损伤本构引入Abaqus有限元分析平台,然后建立爆炸分离装置有限元分析模型,开展爆炸分离过程中各组件损伤破坏进程的精确模拟,复现地面试验情况,确定设计薄弱环节,预示结果与试验结果一致,证实了响应预示方法及计算结果的可靠性,为后续同类产品的设计与动态损伤破坏进程模拟提供了参考。The material failure process should be considered in the separation process simulation of explosive separation device,and the material constitutive relation should be extended from elastic-plastic to progressive damage fracture model in this process.Firstly,the dynamic damage constitutive of metallic materials is studied.Secondly,the damage constitutive generator is developed in abaqus platform.Finally,the finite element analysis method based on the elasto-plastic damage constitutive model is used to reproduce the ground test of the explosive separation device and determine the weak points in the design,which provides a reference for the follow-up similar product design and dynamic damage simulation process.

关 键 词：弹塑性 强度校核 损伤本构 爆炸分离装置 损伤破坏进程模拟 

分 类 号：V423.9[航空宇航科学与技术—飞行器设计]