基于W/Pb/Fe-石蜡复合介质弹丸动态力学性能试验与本构模型对比
Comparative Study on Dynamic Mechanical Property Tests and Constitutive Models of W/Pb/Fe-Paraffin Composite Medium Projectile
- 兵工学报 2025年46卷第S2期 页码：250921
- 作者机构：
1. 北京理工大学 爆炸科学与技术国家重点实验室, 北京 100081
2. 瞬态冲击全国重点实验室, 北京 102202
3. 中国兵器工业第二○八研究所, 北京 102202
- 作者简介：
* 邮箱: zhang.06nl@163.com
- 基金信息：省部级核心关键技术项目(HXJS-2023-014);国家自然科学基金“叶企孙”科学基金项目(U2241273)
DOI：10.12382/bgxb.2025.0921
中图分类号：收稿：2025-10-15，
网络首发：2026-02-03，
纸质出版：2025
- 稿件说明：
移动端阅览
张振辉, 黄广炎, 王勇, 等. 基于W/Pb/Fe-石蜡复合介质弹丸动态力学性能试验与本构模型对比[J]. 兵工学报, 2025,46(S2):250921.
Zhenhui ZHANG, Guangyan HUANG, Yong WANG, et al. Comparative Study on Dynamic Mechanical Property Tests and Constitutive Models of W/Pb/Fe-Paraffin Composite Medium Projectile[J]. Acta Armamentarii, 2025, 46(S2): 250921.
张振辉, 黄广炎, 王勇, 等. 基于W/Pb/Fe-石蜡复合介质弹丸动态力学性能试验与本构模型对比[J]. 兵工学报, 2025,46(S2):250921. DOI： 10.12382/bgxb.2025.0921.
Zhenhui ZHANG, Guangyan HUANG, Yong WANG, et al. Comparative Study on Dynamic Mechanical Property Tests and Constitutive Models of W/Pb/Fe-Paraffin Composite Medium Projectile[J]. Acta Armamentarii, 2025, 46(S2): 250921. DOI： 10.12382/bgxb.2025.0921.
摘要
针对反恐处突、特警突击等场景中高效破除门锁的作战需求
为解决传统刚性弹丸附带损伤控制不足的技术难题
研发基于金属粉末复合介质的低附带损伤破除门锁弹药
并通过实验、仿真与理论分析系统研究其性能。以W/Pb/Fe金属粉末与石蜡为核心原料
设计并制备基础试样(试样Ⅰ)及“碳纤维外封装”(试样Ⅱ)、“3D打印骨架内嵌+碳纤维外封装”(试样Ⅲ)2种增强试样
通过实验、理论分析与数值仿真研究其性能。单轴压缩实验结果表明
试样Ⅲ(22.72MPa)与试样Ⅱ(15.47MPa)的峰值强度分别为试样Ⅰ(4.77MPa)的4.76倍与3.24倍
且三者均呈现“初始压缩钝粗-屈服微裂-滑移损伤-压致拉裂”4阶段失效特征。弹道测试实验结果表明
发射2发试样Ⅲ弹丸可使门锁4个锁舌全部脱落
毁伤效能显著优于其他2种试样。基于Mie-Grüneisen方程与SPH方法建立的仿真模型
较好地预测了试样应力演化与失效形貌
仿真与实验von Mises应力峰值误差<0.3%。构建的综合易损性指标可完整表征材料损伤特性
为复合介质弹丸结构优化和选型提供理论与数据支撑。
Abstract
In response to the need for efficient breaching of door locks with minimal collateral damage to surrounding personnel and facilities in scenarios such as counter-terrorism operations and SWAT assaults
this study addresses the technical challenge of inadequate collateral damage control inherent in traditional rigid projectiles.We developed a low-collateral-damage door lock-breaching munition based on a metal powder composite medium and systematically investigated its performance through experiments
simulations
and theoretical analyses.Using W/Pb/Fe metal powders and paraffin as core materials
we designed and fabricated a baseline specimen (Specimen Ⅰ)
as well as two reinforced specimens:“carbon fiber external encapsulation” (Specimen Ⅱ) and “3D-printed skeleton embedded+carbon fiber external encapsulation” (Specimen Ⅲ).Their performance was studied using experiments
theoretical analyses
and numerical simulations.Results of uniaxial compression tests show that the peak strengths of Specimen Ⅲ (22.72MPa) and Specimen Ⅱ (15.47MPa) are 4.76 and 3.24 times that of Specimen Ⅰ (4.77MPa)
respectively
with all three exhibiting a four-stage failure mode:“initial blunt compression-microcrack yield-slip damage-compression-induced tensile cracking.” The ballistic test results indicated that firing two Specimen Ⅲ projectiles completely disengaged all four lock bolts
demonstrating a significantly greater destructive efficiency than the other two specimens.The simulation model
established using the Mie-Grüneisen equation and SPH method
accurately predicted the stress evolution and failure morphology of the specimens
with a simulation-to-experiment von Mises stress peak error of less than 0.3%.The constructed comprehensive vulnerability index fully characterizes the damage properties of a material
providing theoretical and data support for the structural optimization and selection of composite medium projectiles.
关键词
Keywords
references
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