Experimental Study and Theoretical Analysis of the Size Effect for Scale Model Projectile Penetrating into Rock Target

Fei GAO; Shuxin DENG; Guokai ZHANG; Yuguo JI; Chenkang LIU; Mingyang WANG

doi:10.12382/bgxb.2023.0014

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Experimental Study and Theoretical Analysis of the Size Effect for Scale Model Projectile Penetrating into Rock Target

更新时间：2025-08-18

- Experimental Study and Theoretical Analysis of the Size Effect for Scale Model Projectile Penetrating into Rock Target
- Acta Armamentarii Vol. 44, Issue 12, Pages: 3601-3612(2023)
- 作者机构：
  
  1. 南京理工大学机械工程学院, 江苏南京 210094
  2. 陆军工程大学爆炸冲击防灾减灾国家重点实验室, 江苏南京 210007
- 作者简介：
- 基金信息：
- DOI：10.12382/bgxb.2023.0014
  CLC：
- Received：07 January 2023，
  
  Published Online：12 January 2024，
  
  Published：30 December 2023
- 稿件说明：
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Fei GAO, Shuxin DENG, Guokai ZHANG, et al. Experimental Study and Theoretical Analysis of the Size Effect for Scale Model Projectile Penetrating into Rock Target[J]. Acta Armamentarii, 2023, 44(12): 3601-3612.
DOI：

Fei GAO, Shuxin DENG, Guokai ZHANG, et al. Experimental Study and Theoretical Analysis of the Size Effect for Scale Model Projectile Penetrating into Rock Target[J]. Acta Armamentarii, 2023, 44(12): 3601-3612. DOI： 10.12382/bgxb.2023.0014.

摘要

为研究弹体侵彻岩体介质尺寸效应产生的内在机理

开展两种弹形几何相似的钢质弹体对高强度花岗岩靶的侵彻效应试验。根据侵彻深度试验结果

评估常用的经验公式对于高强度岩石侵彻深度预测的适用性

发展以弹形系数和弹径系数为控制变量的侵彻深度计算方法

建立不同缩尺比下模型弹与原型弹侵彻深度换算关系。研究结果表明:模型弹与原型弹的比例侵彻深度存在弹体口径放大效应

该效应系数不仅与缩比系数有关

也与原型弹直径以及靶体材料参数有关

且随着原型弹直径的增大而增大

随着缩比系数的增大而减小;建立的侵彻深度换算关系解释了采用传统模型试验方法导致模型与原型试验结果之间产生误差的原因

揭示了弹体侵彻岩石类介质中尺寸效应产生的机理。

Abstract

The penetration effects of geometrically similar projectiles on high-strength granite targets are tests to study the inherent mechanism of the size effect of the projectile penetrating into rock medium. According to the penetration test results

the applicability of typical empirical formulae for predicting the penetration depth of projectile into high strength rock is evaluated

a penetration depth calculation method with the shape and diameter coefficients as the control variables is developed

and the conversion relationship between the penetration depths of model projectile and prototype projectile under different scale ratios is established. The research results show that the proportional penetration depth of model projectile and the prototype projectile has the caliber effect. The effect coefficient is not only related to the scale ratios

but also related to the diameter of prototype projectile and the material parameters of target. It increases with the increase in the prototype projectile diameter

and decreases with the increase in the scale ratio. The established conversion relation of penetration depth explains the reason for the error between the model test result and the prototype test result caused by the traditional model test method

and reveals the mechanism of the size effect of projectile penetrating into rock-like materials.

关键词

Keywords

references

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