Influence of Stiffened Structure of Steel Plate on the Hypervelocity Penetration Ability of Cylindrical Projectile

Kun MA; Mingrui LI; Chunlin CHEN; Lixin YIN; Na FENG; Zikai SHEN

doi:10.12382/bgxb.2022.0420

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Influence of Stiffened Structure of Steel Plate on the Hypervelocity Penetration Ability of Cylindrical Projectile

更新时间：2025-08-18

- Influence of Stiffened Structure of Steel Plate on the Hypervelocity Penetration Ability of Cylindrical Projectile
- Acta Armamentarii Vol. 44, Issue 8, Pages: 2441-2452(2023)
- 作者机构：
  
  1. 西北核技术研究所, 陕西西安 710024
  2. 清华大学工程物理系, 北京 100084
- 作者简介：
- 基金信息：
- DOI：10.12382/bgxb.2022.0420
  CLC：
- Received：22 May 2022，
  
  Published Online：06 September 2023，
  
  Published：30 August 2023
- 稿件说明：
移动端阅览
Kun MA, Mingrui LI, Chunlin CHEN, et al. Influence of Stiffened Structure of Steel Plate on the Hypervelocity Penetration Ability of Cylindrical Projectile[J]. Acta Armamentarii, 2023, 44(8): 2441-2452.
DOI：

Kun MA, Mingrui LI, Chunlin CHEN, et al. Influence of Stiffened Structure of Steel Plate on the Hypervelocity Penetration Ability of Cylindrical Projectile[J]. Acta Armamentarii, 2023, 44(8): 2441-2452. DOI： 10.12382/bgxb.2022.0420.

摘要

为在柱形弹体超高速撞击靶板问题基础上进一步研究加筋结构对弹体侵彻能力的影响

在数值模拟方面

结合GRAY物态方程固相-液相模型、Johnson Cook(JC)强度模型以及JC失效模型作为金属本构模型

利用光滑粒子流体动力学方法开展计算。在实验方面

分别开展圆柱形弹体超高速撞击单层加筋钢板和3层加筋钢板的实验研究。结合数值模拟及实验结果

分析弹体超高速撞击加筋结构的物理机制

研究弹体倾角、弹体攻角、加筋类型、弹体直径与筋厚比对圆柱形弹体侵彻能力的影响

分析圆柱形弹体超高速撞击单层加筋钢板和3层加筋钢板问题中弹道的横向偏移。研究结果表明:在对称撞击下

在单主筋基础上增加垂直方向的主筋或副筋对弹体侵蚀长度的影响较小

弹体侵蚀长度与筋宽比随弹体直径与筋厚比的增加呈指数衰减趋势;在非对称撞击下

弹体轴线与主筋中面夹角大是引起弹体姿态发生明显变化甚至发生断裂的主要原因

而剩余弹体横向运动速度相对入射方向的剩余速度为小量;在连续撞击3层加筋钢板情况下

当主筋边界(相对弹轴远侧)与弹体边界相对弹轴的比例关系在0.6以内时

弹体仍能保持较好的侵彻能力。即使弹体相对主筋存在初始横向偏移

侵彻弹道也不会发生较大的横向偏移。

Abstract

In order to further study the influence of stiffened structure on the penetration ability of the projectile based on the problem of cylindrical projectile impacting the target plate at hypervelocity. In numerical simulations

the GRAY solid-liquid phase equation of state model

the JC strength model and the JC failure model are collectively taken as the metal constitutive model. The typical problems are calculated by the smooth particle hydrodynamics method. In the experiment

the single-layer stiffened steel plate and the three-layer stiffened steel plate are impacted by the cylindrical projectile at hypervelocity. Combined with the simulation and experimental results

the physical mechanism of the cylindrical projectile impacting the stiffened structure at hypervelocity is analyzed. The influence of the oblique angle

the attack angle

the type of stiffener

the radio of the projectile diameter and the stiffener thickness on the penetration ability of the cylindrical projectile is investigated. The lateral displacement of the trajectory of the cylindrical projectile as it impacts the stiffened steel plates at hypervelocity is analyzed. The results show that: in the case of symmetric impact

adding a main stiffener or auxiliary stiffener in the vertical direction on the basis of the single main stiffener has little effect on the erosion length of the projectile

and the radio of projectile erosion length to stiffener width decreases exponentially with the increase of the ratio of projectile diameter to stiffener thickness; in the case of asymmetric impact

the large angle between the axis of the projectile and the middle plane of the main stiffener is the main reason for the obvious attitude change of the projectile and even the fracture of the projectile

and the lateral motion velocity of the remaining projectile is small relative to the residual velocity in the impact direction; in the case of the projectile impacting the three-layer stiffened steel plate at hypervelocity

when the ratio of the main stiffener boundary far from the projectile axis to the projectile boundary relative to the projectile axis is within 0.6

the projectile can still maintain a good penetration ability. The penetration trajectory will not deviate greatly even if the projectile has an initial lateral displacement relative to the main stiffener.

关键词

Keywords

references

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马坤 , 陈春林 , 冯娜 , 等 . 柱形93钨弹体超高速撞击薄钢板穿孔及破片群扩展特征 [J ] . 兵工学报 , 2021 , 42 ( 11 ): 2350 - 2359 . DOI: 10.3969/j.issn.1000-1093.2021.11.008 http://doi.org/10.3969/j.issn.1000-1093.2021.11.008 为进一步研究柱形弹体超高速撞击靶板的破片群扩展、弹体侵蚀等问题，开展柱形93钨弹体超高速撞击薄钢板实验研究。通过量纲分析方法给出柱形弹体穿靶的穿孔直径经验公式；利用高速摄像技术获得靶后破片群运动图像，分析破片群扩展规律以及弹体的侵蚀规律；基于微观组织分析，探索超高速撞击中弹靶材料的熔化问题。结果表明：通过对实验数据的拟合，认为在弹靶材料不变的情况下，靶板穿孔直径、靶后破片群轴向扩展最大速度、横向扩展最大速度近似和弹体直径、靶板厚度、撞击速度相关，而对于弹体侵蚀长度，除上述参数外还与弹体长径比相关；在柱形弹体超高速撞击靶板问题中，靶板背表面产生层裂并在破片群前部形成速度大于剩余弹体速度的“尖端”，可近似由靶板厚度小于弹体直径的0.72倍来确定；当柱形93钨弹体以2~3 km/s速度撞击靶板时，靶后破片群尚未发生大范围熔化，但当破片群、剩余弹体撞击第2层靶板时，受到二次加载作用，撞击区附近将发生大范围的材料熔化。

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马坤 , 李名锐 , 陈春林 , 等 . 93钨合金弹体超高速撞击钢板破片群分布数值模拟 [J ] . 兵工学报 , 2019 , 40 ( 10 ): 2022 - 2031 . DOI: 10.3969/j.issn.1000-1093.2019.10.007 http://doi.org/10.3969/j.issn.1000-1093.2019.10.007 为研究93钨合金弹体超高速撞击钢板形成破片群的特征参数分布规律，基于有限元分析软件AUTODYN的光滑粒子流体动力学方法，加入GRAY物态方程固相-液相模型，数值模拟了不同撞击速度和弹体直径条件下的超高速撞击过程，并利用实验结果验证了数值模拟结果的准确性。通过破片识别广度优先搜索算法，获得了破片群质量、数量、动量、温度等参数的分布特征。研究结果表明：破片数量及质量主要集中于破片群前端，中间部分较少，而尾端有所上升，大质量破片主要集中于破片群前端以及尾端，其横向速度较低；破片群前端具有高质量、高轴向动量以及高横向动量，这部分破片代表了破片群毁伤威力；高温破片主要分布在破片群中间偏前部，而在破片群前后两端均有较多的低温破片，高温破片的合速度在所有破片中处于中等偏上水平，高合速度破片在各温度段都有分布；弹体直径的增加相对撞击速度的提升可以产生数量更多、总质量更高的破片群。弹体直径、撞击速度的改变对破片群前端的相关参数影响显著，因此能够有效提高破片群毁伤威力。

MA K , LI M R , CHEN C L , et al . Simulation analysis of distribution of fragments of hypervelocity 93W projectile impacting on a steel plate target [J ] . Acta Armamentarii , 2019 , 40 ( 10 ): 2022 - 2031 . (in Chinese) DOI: 10.3969/j.issn.1000-1093.2019.10.007 http://doi.org/10.3969/j.issn.1000-1093.2019.10.007 In order to study the distribution of fragments of hypervelocity 93W projectile impacting on a steel plate target, the AUTODYN software is used to do the smoothed particle hydrodynamics simulation, and the GRAY solid-liquid phase equation of state is added as a user subroutine in the software. The hypervelocity impact process under the conditions of different impact velocities and body diameters was simulated, and the simulated results were verified by the experimental results. The distribution characteristics of mass, quantity, momentum, temperature and other parameters of the fragments were obtained based on the breadth-first search algorithm for fragments recognition. The study results show that the quantity and quality of fragments are mainly concentrated at the front part of fragment group, are less at its middle part, and are increased at its tail part. The big mass fragments are mainly concentrated at the front and tail parts of fragment group, and their lateral velocities are low. The front part of the fragment group has higher quality, and higher axial and lateral momenta, which represents the damage power of fragment group. High temperature fragments mainly distribute in the middle to front part of the fragments group, and there are many low temperature fragments at the front and tail part of the fragment group. The resultant velocity of high temperature fragments is above the medium velocity of all fragments, and the fragments with high resultant velocity are distributed in all temperature sections. A fragment group with more fragments and higher total mass can be produced by increasing the diameter of projectile than increasing the impact velocity. The change of diameter of projectile or impact velocity has a more significant effect on the front part of fragment group, so the damage power of fragment group can be effectively improved. Key

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