带药缠绕壳体固化对药柱结构完整性的影响

舒慧明; 潘浩东; 尹艳华

doi:10.15892/j.cnki.djzdxb.2021.05.020

弹箭与制导学报 >

2021 , Vol. 41 >Issue 5: 100 - 105

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2021.05.020

带药缠绕壳体固化对药柱结构完整性的影响

舒慧明 ,
潘浩东 ,
尹艳华

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¹ 西安近代化学研究所,西安 710065
² 北京理工大学化学与化工学院,北京 100081

舒慧明(1979—),男,湖北恩施人,高级工程师,研究方向:火炸药性能.

收稿日期: 2021-02-23

网络出版日期: 2025-05-30

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Effect of Curing Wound Shell with Charge on Structural Integrity of Charge Column

SHU Huiming ,
PAN Haodong ,
YIN Yanhua

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¹ Xi'an Modern Chemistry Research Institute, Xi'an 710065, China
² School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China

Received date: 2021-02-23

Online published: 2025-05-30

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摘要

基于固体推进剂一体化包覆技术工艺流程,研究带药缠绕壳体固化对药柱结构完整性的影响。提出了6种推进剂药型结构,利用有限元软件Ansys构建了数学模型和几何模型,对各药型结构在40℃恒温固化下的应力应变场进行了计算,分析了在固化过程中药柱的热应力状态以及各药型固化应力场的区别;对其中一种药型进行了20~60℃不同温度固化计算以及常温20℃的样机实验对比。计算结果表明,药柱在固化过程中主要应力产生于复合缠绕层,主要应变产生于隔热层;药柱与封头硬接触处有较大的应力集中,最大值达到15MPa,而封头延伸并留有一定空隙可以有效控制此应力,最大应力值可减小为4.8MPa;花芯尺寸和药柱长短对于固化应力有较小影响,实际工艺过程中可结合成品要求微调尺寸。

关键词： 固体推进剂; 包覆工艺; 药型结构; 树脂基复合材料; 热应力

本文引用格式

舒慧明 , 潘浩东 , 尹艳华 . 带药缠绕壳体固化对药柱结构完整性的影响[J]. 弹箭与制导学报, 2021 , 41(5) : 100 -105 . DOI: 10.15892/j.cnki.djzdxb.2021.05.020

Abstract

Based on the process flow of solid propellant integrated coating technology, the influence of solidification of wound shell with propellant on structural integrity of propellant column is studied. Six propellant structures are proposed, and mathematical and geometric models are built by using finite element software ANSYS. The stress and strain fields of each propellant structure are calculated under 40 C constant temperature curing. The thermal stress states of the TCM column and the differences of curing stress fields of each propellant are analyzed. The curing calculation at 20 ~ 60 °C and the prototype experiment at 20 °C are carried out for one of the drugs. The calculation results show that the main stress is generated in the composite winding layer and the main strain is generated in the heat insulation layer during the curing process. There is a large stress concentration at the hard contact between the charge column and the head, and the maximum stress reaches 15 MPa. The extension of the head and a certain void can effectively control the stress, and the maximum stress can be reduced to 4. 8 MPa. The size of the flower core and the length of the charge column have little effect on the curing stress. The size can be adjusted according to the requirements of the finished product in the actual process.

Key words： solid propellant; coating process; structures; resin matrix composites; the thermal stress

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