航空学报 > 2025, Vol. 46 Issue (8): 31083-031083   doi: 10.7527/S1000-6893.2024.31083

固体发动机药柱结构固化残余应力分析与控制技术

于宝石1,2, 雷勇军1,2,3, 申志彬1,2, 张大鹏1,2()   

  1. 1.国防科技大学 空天科学学院,长沙 410073
    2.空天任务智能规划与仿真湖南省重点实验室,长沙 410073
    3.火箭军工程大学,西安 710025
  • 收稿日期:2024-08-20 修回日期:2024-09-18 接受日期:2024-10-14 出版日期:2024-10-16 发布日期:2024-10-15
  • 通讯作者: 张大鹏 E-mail:zhangdapeng@nudt.edu.cn
  • 基金资助:
    国家自然科学基金(61671233);国防科技大学空天科学学院青年人才自主研究培育项目

Review on analysis and control technology of curing residual stress in solid motor propellants

Baoshi YU1,2, Yongjun LEI1,2,3, Zhibin SHEN1,2, Dapeng ZHANG1,2()   

  1. 1.College of Aerospace Science and Engineering,National University of Defense Technology,Changsha 410073,China
    2.Hunan Key Laboratory of Intelligent Planning and Simulation for Aerospace Missions,Changsha 410073,China
    3.Rocket Force University of Engineering,Xi’?an 710025,China
  • Received:2024-08-20 Revised:2024-09-18 Accepted:2024-10-14 Online:2024-10-16 Published:2024-10-15
  • Contact: Dapeng ZHANG E-mail:zhangdapeng@nudt.edu.cn
  • Supported by:
    National Natural Science Foundation of China(61671233);Independent Research and Cultivation Project for Young Talents of College of Aerospace Science and Engineering, National University of Defense Technology

摘要:

固体发动机药柱结构在固化降温过程中会累积一定的残余应力,进而影响其结构完整性,分析药柱结构固化残余应力并探究有效的控制方法,对保证航天运载的可靠性及武器装备的安全性具有重要意义。从药柱结构固化残余应力的产生机理、释放方法、检测技术、反演预测等4个方面的研究进展进行综述,总结了目前考虑药柱固化残余应力的固体发动机结构完整性研究现状与存在的不足,并基于药柱结构固化残余应力形成原因与释放机制提出相应的控制方法及工程应用发展构想。分析认为,结合固化工艺调控与结构构型优化的协同设计方法将有效控制药柱结构的固化残余应力,同时建立标准的测试系统是验证控制方法的关键。

关键词: 固体火箭发动机, 固化残余应力, 结构完整性, 力学性能检测, 工艺设计方法

Abstract:

A certain residual stress will accumulate during the curing and cooling process of Solid Rocket Motor (SRM) grain, which will affect the structural integrity of the SRM. Therefore, it is of great significance to analyze the Cure-induced Residual Stress (CRS) of the propellant grain and explore effective control methods for ensuring the reliability of space vehicles and the safety of weapons and equipment. In this paper, the research progress on the generation mechanism, release method, detection technique and inversion prediction of the CRS of propellant grain is reviewed. This paper summarizes the current status and shortcomings of the structural integrity research of SRM, considering the CRS of propellant grain, as well as the development of its control methods and engineering applications. Based on the formation causes and release mechanism of the CRS and the release mechanisms in propellant grain structures, corresponding control methods and ideas for engineering application development are proposed. The analysis shows that the co-design method combining curing process control and structural configuration optimization can effectively control the CRS of the propellant grain, and establishing a standard test system is the key to validate the control method.

Key words: solid rocket motor, cure-induced residual stress, structural integrity, mechanical properties testing, process design method

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