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弹箭与制导学报 >

2022 , Vol. 42 >Issue 3: 24 - 27

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2022.03.005

随机轴向冲击下粘弹性药柱动力响应的数值模拟与分析

  • 常皓 ,
  • 方帆 ,
  • 胡迪 ,
  • 孙亚东 ,
  • 陈俩兴 ,
  • 赵腾
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  • 32382部队,北京 100039

常皓(1979—),男,吉林吉林人,高级工程师,研究方向:炮兵防空兵装备试验鉴定。

收稿日期: 2020-09-18

  网络出版日期: 2025-02-03

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Numerical Model and Analysis of Dynamic Response of Viscoelastic Charge under Random Axial Impact

  • CHANG Hao ,
  • FANG Fan ,
  • HU Di ,
  • SUN Yadong ,
  • CHEN Liaxing ,
  • ZHAO Teng
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  • No.32382 Unit,Beijing 100039,China

Received date: 2020-09-18

  Online published: 2025-02-03

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摘要

建立了自由装填固体发动机三维模型,并基于药柱的积分型粘弹性本构关系对三维模型进行了有限元方法分析。研究过程利用随机冲击响应分析,分别讨论了飞行过程和级间分离工况下的动载荷历程,得到了自由装填固体火箭发动机及药柱的应变分布结果和危险部位。结果表明,发动机整体可靠性取决于药柱中端强度,设计过程中要综合考虑药柱形态及安装方式。所得结论和分析方法为自由装填发动机设计提供了有益参考。

关键词： 随机轴向冲击; 自由装填固体发动机; 有限元分析; 动力响应; 模态

本文引用格式

常皓 , 方帆 , 胡迪 , 孙亚东 , 陈俩兴 , 赵腾 . 随机轴向冲击下粘弹性药柱动力响应的数值模拟与分析[J]. 弹箭与制导学报, 2022 , 42(3) : 24 -27 . DOI: 10.15892/j.cnki.djzdxb.2022.03.005

Abstract

The three-dimensional model of free loading solid motor is established, and the three-dimensional model is analyzed by finite element method based on the integral viscoelastic constitutive relation of grain. By analyzing the dynamic response under the random axial vibration, the stress distribution and dangerous position of the rocket motor during flying and stage separation are discussed.The analysis results present that the strength at the middle of the rocket grain has significant influence on structural integrity and reliability of the rocket motor. Thus, the grain structure and assemble method of the rocket grain should be well considered in the design procedure. The analysis method and result provide beneficial reference for the design of free filling rocket motor.

Key words： random axial impact; free filling solid rocket motor; finite element analysis; dynamic response; modal

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参考文献

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