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论文:2022,Vol:40,Issue(1):56-61 |
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引用本文： |
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陈科, 任全彬, 程吉明, 王健儒, 雷家豪. HTPB推进剂装药发动机立式贮存结构响应分析[J]. 西北工业大学学报 |
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CHEN Ke, REN Quanbin, CHENG Jiming, WANG Jianru, LEI Jiahao. Structural response analysis of a solid rocket motor with HTPB propellant grain under vertical storage condition[J]. Northwestern polytechnical university |
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| HTPB推进剂装药发动机立式贮存结构响应分析 |
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| 陈科1, 任全彬2, 程吉明1, 王健儒2, 雷家豪2 |
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1. 西北工业大学 燃烧、热结构与内流场重点实验室, 陕西 西安 710072;
2. 西安航天动力技术研究所, 陕西 西安 710025 |
| 摘要: |
| 为了获得固体发动机在立式贮存条件下药柱的结构响应特性，针对HTPB复合固体推进剂开展了不同应力水平下的蠕变试验，并拟合了蠕变本构模型。采用建立的推进剂蠕变本构模型对某发动机开展了立式贮存条件下的结构响应分析，获得了贮存过程中发动机药柱应力应变变化规律。针对该发动机设计开展了为期2周的立式贮存试验，测试获得了贮存过程中药柱前后端面的下沉位移变化，并与仿真结果进行了对比。结果表明，建立的推进剂蠕变本构模型可以较好地模拟药柱立贮过程中的蠕变响应，贮存过程中前人工脱黏层根部位置处为药柱的结构薄弱位置，立式贮存1年后其药柱底部端面轴向下沉位移约为1.38 mm。 |
| 关键词:
固体发动机
HTPB推进剂
蠕变
立式贮存
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| Structural response analysis of a solid rocket motor with HTPB propellant grain under vertical storage condition |
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| CHEN Ke1, REN Quanbin2, CHENG Jiming1, WANG Jianru2, LEI Jiahao2 |
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1. Science and Technology on Combustion, Internal Flow and Thermal-Structure Laboratory, Northwestern Polytechnical University, Xi'an 710072, China;
2. Xi'an Institute of Aerospace Propulsion Technology, Xi'an 710025, China |
| Abstract: |
| Aiming at the structural response characteristics of solid rocket motor (SRM) under vertical storage conditions, the creep tests of HTPB propellant under different stress levels were carried out, and the creep constitutive model of the propellant was fitted. Then the creep model of the HTPB propellant was used to analyze the structural response of a solid rocket motor with HTPB propellant grain. At the same time, a two-week vertical storage experiment was conducted for the SRM with HTPB propellant grain, and the creep displacement of the front and rear end of the propellant grain was measured and compared with the simulation results. The results show that the creep model of the HTPB propellant can well simulate the structural response of the propellant grain under vertical storage condition. During the storage process, the position near the root of the front artificial relief flaps is the high stress area of propellant grain. After 1 year of vertical storage, the axial sinking displacement at the rear end face of propellant grain is about 1.38 mm. |
| Key words:
solid rocket motor (SRM)
HTPB propellant
creep
vertical storage
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| 收稿日期: 2021-07-13
修回日期:
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| DOI: 10.1051/jnwpu/20224010056 |
| 基金项目: 国防科技重点实验室基金（6142701190204）资助 |
| 通讯作者: 程吉明(1989—),西北工业大学助理研究员,主要从事固体推进剂力学性能研究。e-mail:chengjiming@nwpu.edu.cn
Email：chengjiming@nwpu.edu.cn |
| 作者简介: 陈科(1989—),西北工业大学博士研究生,主要从事发动机结构完整性研究。
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