复合固体推进剂细观损伤扫描电镜实验及数值模拟

推进技术 ›› 2011, Vol. 32 ›› Issue (3): 412-416.

复合固体推进剂细观损伤扫描电镜实验及数值模拟

刘著卿,李高春,邢耀国,董可海,陈晓明

海军航空工程学院飞行器工程系,山东烟台 264001;海军航空工程学院飞行器工程系,山东烟台 264001;海军航空工程学院飞行器工程系,山东烟台 264001;海军航空工程学院飞行器工程系,山东烟台 264001;内蒙古动力机械研究所,内蒙古呼和浩特 010010

发布日期:2021-08-15
作者简介:刘著卿(1983—),男,硕士,研究领域为复合固体推进剂损伤特性。E-mail:flowwwild@yahoo.com.cn
基金资助:
学院青年基金(HYQN200903)。

Numerical simulation and SEM study on the microstructuraldamage of composite solid propellants

Dept. of Aircraft Engineering, Naval Aeronautical Engineering Academy, Yantai 264001, China;Dept. of Aircraft Engineering, Naval Aeronautical Engineering Academy, Yantai 264001, China;Dept. of Aircraft Engineering, Naval Aeronautical Engineering Academy, Yantai 264001, China;Dept. of Aircraft Engineering, Naval Aeronautical Engineering Academy, Yantai 264001, China;Inner Mongolia Power Machinery Research Inst., Huhehot 010010, China

Published:2021-08-15

摘要/Abstract

摘要： 对复合固体推进剂进行单向拉伸载荷条件下的原位扫描电镜观察实验,分析其受载条件下的细观损伤发生及扩展特性。基于原位电镜图片,运用数字图像处理技术提取推进剂细观形貌,建立了推进剂椭圆形颗粒填充模型,对受载条件下颗粒与基体之间的脱粘行为进行数值模拟。研究表明,数值分析结果能反映推进剂受载条件下的细观损伤发生及扩展特性。

关键词: 复合固体推进剂; 细观损伤;界面单元; 脱粘

Abstract: Microstructural damage initiation and propagation of composite solid propellants under uniaxial tension was analyzed by means of in-situ electron microscopy scanning. Using the digital image processing technology, the micro-morphology of propellant was gained from the SEM image. The elliptic filler packing model were generated based on these information. Numerical simulation was applied to study the debonding of the particles and matrix under load. The results showed that numerical simulation results were in good agreement with the SEM results. The initiation and propagation of composite solid propellants under uniaxial tensile was obtained.

Key words: Composite solid propellant；Microstructural damage；Interfacial element；Debonding

刘著卿,李高春,邢耀国,董可海,陈晓明. 复合固体推进剂细观损伤扫描电镜实验及数值模拟[J]. 推进技术, 2011, 32(3): 412-416.