Dynamic Response and Failure Mechanism of Pre-holed Q235 Steel Plate under Foam Projectile Impact Loading

Jiatong HAN; Xin WANG; Lei ZHANG; Zhen LI; Pengfei WANG; Zhenyu ZHAO; Tianjian LU

doi:10.12382/bgxb.2023.0359

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Dynamic Response and Failure Mechanism of Pre-holed Q235 Steel Plate under Foam Projectile Impact Loading

更新时间：2025-08-18

- Dynamic Response and Failure Mechanism of Pre-holed Q235 Steel Plate under Foam Projectile Impact Loading
- Acta Armamentarii Vol. 44, Issue 12, Pages: 3654-3666(2023)
- 作者机构：
  
  1. 南京航空航天大学航空航天结构力学及控制全国重点实验室,江苏南京 210016
  2. 中国航天科技创新研究院先进材料与能源中心,北京 100176
  3. 海军研究院,北京 100161
- 作者简介：
- 基金信息：
- DOI：10.12382/bgxb.2023.0359
  CLC：
- Received：20 April 2023，
  
  Published Online：12 January 2024，
  
  Published：30 December 2023
- 稿件说明：
移动端阅览
Jiatong HAN, Xin WANG, Lei ZHANG, et al. Dynamic Response and Failure Mechanism of Pre-holed Q235 Steel Plate under Foam Projectile Impact Loading[J]. Acta Armamentarii, 2023, 44(12): 3654-3666.
DOI：

Jiatong HAN, Xin WANG, Lei ZHANG, et al. Dynamic Response and Failure Mechanism of Pre-holed Q235 Steel Plate under Foam Projectile Impact Loading[J]. Acta Armamentarii, 2023, 44(12): 3654-3666. DOI： 10.12382/bgxb.2023.0359.

摘要

为评估带壳装药产生的爆炸冲击波和高速破片联合作用的毁伤效应

针对泡沫铝子弹冲击预制圆孔Q235钢板开展了数值模拟研究。采用实验结果验证数值计算的准确性

并系统分析靶板的动态变形、破坏模式、孔周位移等力学响应;基于描述应力状态的应力三轴度与Lode参数

揭示预制圆孔引发靶板孔周撕裂破坏的力学机理

厘清圆孔直径及板厚对结构抗毁伤性能的影响规律。研究结果表明:预制圆孔显著降低了结构的抗毁伤性能:随着孔径增大或板厚减小

靶板的孔周位移上升

引发撕裂破坏的临界载荷相应下降。

Abstract

A pre-holed Q235 steel plate subjected to foam projectile impact is numerically investigated to assess the structural damage caused by combined blast and fragment loading upon detonation of cased explosives. The validity of the numerical model is checked against experimental measurements. The validated model is then employed to investigate the dynamic response

deformation/failure modes and hole-edge deflection of the pre-holed plate. The physical mechanisms of tearing failure initiated around the pre-hole are revealed using the stress triaxiality and Lode parameter for describing the state of stress. The influences of hole diameter and plate thickness on the impact resistance and failure mechanism are also quantified. Results show that the presence of a pre-formed hole significantly curtails the impact resistance of the steel plate: With increase in hole diameter or decrease in plate thickness

the hole-edge deflection of the steel plate grows

while the projectile momentum causing tearing failure drops.

关键词

Keywords

references

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