Shear creep analysis of solid rocket motor bonding interface and rapid prediction model**

IF 1.7 4区工程技术 Q3 CHEMISTRY, APPLIED

Propellants, Explosives, Pyrotechnics Pub Date : 2023-12-12 DOI:10.1002/prep.202300070

Guanlin Ye, Kuangwei Deng, Weijing Wu, Dong Yang, Zhibin Shen

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引用次数: 0

Abstract

During vertical storage of solid rocket motors, shear creep behavior occurred at the sidewall bonding interface due to self-weight load, threatening the structural safety and storage life of the motor. To study the shear creep characteristics of the bonding interface, shear creep tests were conducted on a shear interface test piece of a motor under various temperatures and stresses. An engineering criterion for the onset of nonlinear viscoelastic stage of the bonding interface was proposed, and a rapid prediction model for shear creep of motor bonding interface in linear viscoelastic stage was devised. Furthermore, the stress-time master curve of shear creep compliance at the bonding interface was established, revealing the variation trend of shear creep compliance during long-term creep process. The results showed that this rapid prediction model had simple construction, high accuracy and wide applicability, and could well predict short-term creep behaviour of bonding interface in linear viscoelastic stage. A method for structural integrity assessment of vertically stored solid rocket motors could be provided by using these research methods and results.

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固体火箭发动机结合界面的剪切蠕变分析和快速预测模型**

固体火箭发动机在垂直存放过程中，由于自重载荷的作用，在侧壁粘结界面处发生剪切蠕变行为，威胁到发动机的结构安全和存放寿命。为研究粘接界面的剪切蠕变特性，对某电机剪切界面试件在不同温度和应力下进行了剪切蠕变试验。提出了键合界面非线性粘弹性阶段开始的工程判据，建立了键合界面线性粘弹性阶段剪切蠕变的快速预测模型。建立了粘结界面剪切蠕变柔度的应力-时间主曲线，揭示了长期蠕变过程中剪切蠕变柔度的变化趋势。结果表明，该快速预测模型结构简单、精度高、适用性广，能较好地预测黏结界面在线粘弹性阶段的短期蠕变行为。利用这些研究方法和成果，可以为垂直存储固体火箭发动机的结构完整性评估提供一种方法。

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来源期刊

Propellants, Explosives, Pyrotechnics 工程技术-工程：化工

CiteScore

4.20

自引率

16.70%

发文量

235

审稿时长

2.7 months

期刊介绍： Propellants, Explosives, Pyrotechnics (PEP) is an international, peer-reviewed journal containing Full Papers, Short Communications, critical Reviews, as well as details of forthcoming meetings and book reviews concerned with the research, development and production in relation to propellants, explosives, and pyrotechnics for all applications. Being the official journal of the International Pyrotechnics Society, PEP is a vital medium and the state-of-the-art forum for the exchange of science and technology in energetic materials. PEP is published 12 times a year. PEP is devoted to advancing the science, technology and engineering elements in the storage and manipulation of chemical energy, specifically in propellants, explosives and pyrotechnics. Articles should provide scientific context, articulate impact, and be generally applicable to the energetic materials and wider scientific community. PEP is not a defense journal and does not feature the weaponization of materials and related systems or include information that would aid in the development or utilization of improvised explosive systems, e.g., synthesis routes to terrorist explosives.