高能固体推进剂刺入载荷的多物理量诊断和点火机制

朱俊伍; 吴艳青; 刘旻霖; 鞠同; 杨昆

doi:10.12382/bgxb.2026.0009

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高能固体推进剂刺入载荷的多物理量诊断和点火机制

更新时间：2026-08-25

- 高能固体推进剂刺入载荷的多物理量诊断和点火机制
- Multiphysics Diagnostics and Ignition Mechanism Investigation of High-energy Solid Propellants under Puncture Loading
- 兵工学报 2026年
- 作者机构：
  
  北京理工大学爆炸科学与安全防护全国重点实验室, 北京 100081
- 作者简介：
  
  邮箱：wuyqing@bit.edu.cn.
- 基金信息：
  
  国家自然科学基金重点项目(U2441213)
- DOI：10.12382/bgxb.2026.0009
  中图分类号： TJ55
- 收稿：2026-01-04，
  
  修回：2026-08-14，
  
  录用：2026-05-13，
- 稿件说明：
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朱俊伍, 吴艳青, 刘旻霖, 等. 高能固体推进剂刺入载荷的多物理量诊断和点火机制[J/OL]. 兵工学报, 2026.

ZHU Junwu, WU Yanqing, LIU Minlin, et al. Multiphysics Diagnostics and Ignition Mechanism Investigation of High-energy Solid Propellants under Puncture Loading[J/OL]. Acta Armamentarii, 2026.
朱俊伍, 吴艳青, 刘旻霖, 等. 高能固体推进剂刺入载荷的多物理量诊断和点火机制[J/OL]. 兵工学报, 2026. DOI： 10.12382/bgxb.2026.0009.

ZHU Junwu, WU Yanqing, LIU Minlin, et al. Multiphysics Diagnostics and Ignition Mechanism Investigation of High-energy Solid Propellants under Puncture Loading[J/OL]. Acta Armamentarii, 2026. DOI： 10.12382/bgxb.2026.0009.

摘要

为探索高能固体推进剂异物刺入条件下的响应过程和点火机制

设计并构建一套耦合多物理场原位观测系统的可视化穿刺点火实验装置。该系统集成高速摄像、红外热成像、数字图像相关（Digital Image Correlation，DIC）应变测量、分布式压力传感及原位扫描电镜（Scanning Electron Microscope，SEM）、能谱分析（Energy Dispersive Spectroscopy，EDS）等功能，实现了对样品在穿刺过程中变形、温升、流动及点火行为的同步、多维度观测。以三种不同厚度（5 mm、10 mm、15 mm）的GAP基高能固体推进剂为研究对象，开展了系列穿刺实验，重点分析了样品厚度对点火敏感性的影响、点火发生的临界条件、点火点的空间分布特征及其与局部力学场的关联。实验结果表明：在无侧向约束条件下，点火仅在样品厚度被压缩至最大固相颗粒尺寸（约330 μm）以下时发生；点火起源于高氯酸铵（Ammonium Perchlorate，AP）颗粒；点火点并非随机分布，而是集中出现在穿刺杆截面内侧的环形区域（

为 2.5~4.0 mm），该区域具有高剪切应变、高剪切应变率、高应力梯度与高径向流速的协同特征；进一步通过摩擦功率密度计算与残骸微观形貌分析，揭示颗粒‑界面摩擦生热是引发推进剂点火的主要机制。

Abstract

To investigate the response and ignition mechanism of high‑energy solid propellants under puncture loading

a visualized experimental system with a multi‑physics in‑situ diagnostic platform is designed. The system has the functions of high‑speed imaging

infrared thermal imaging

digital image correlation (DIC) strain measurement

distributed pressure sensing

in‑situ scanning electron microscopy (SEM)

and energy dispersive spectroscopy (EDS)

thus enabling the synchronous and multi-dimensional observation of deformation

temperature evolution

flow fields and ignition behaviors of the samples during puncturing. A series of puncture experiments are conducted on 5 mm

10 mm and 15 mm-thick GAP‑based propellant samples. This paper focuses on analyzing the influence of sample thickness on ignition sensitivity

the critical conditions for ignition

the spatial distribution characteristics of ignition point

and its correlation with the local mechanical field. The results show that the ignition consistently occurs only after the sample thickness is compressed below the maximum solid particle size (approximately 330 μm). Ignition originates from the ammonium

perchlorate (AP) particles

and the ignition points are concentrated in an annular region (

is approximately 2.5 to 4 millimeters) inside the puncture rod’s cross‑section

which exhibits high shear strain

high shear strain rate

notable stress gradients

and pronounced radial flow. The calculation of friction power density and the analysis of micro‑morphology of residues indicates that interfacial frictional heating coupled with adiabatic shear localization constitutes the primary mechanism for ignition under such puncture conditions.

关键词

Keywords

references

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