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Damage Models for Hypervelocity Impact of Ti-based High-entropy Alloy Rod-shaped Projectiles on Multi-layered Thin Steel Targets
- Acta Armamentarii (2026)
- 作者机构：
1. 上海交通大学机械系统与振动全国重点实验室,上海,200240
2. 西北核技术研究所,陕西,西安,710024
- 作者简介：
- 基金信息：
DOI：10.12382/bgxb.2025.0879
CLC： O385Received：25 September 2025，
Online First：10 February 2026，
- 稿件说明：
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张孟珂，陈春林，曹进，等. 钛基高熵合金杆式弹超高速撞击多层薄钢板破坏模型研究[J/OL]. 兵工学报, 2026(2026-02-10). https://doi.org/10.12382/bgxb.2025.0879.
ZHANG M N, CHEN C N, MA K N, et al. Damage models for hypervelocity impact of ti-based high-entropy alloy rod-shaped projectiles on multi-layered thin steel targets[J/OL]. Acta Armamentarii, 2026(2026-02-10). https://doi.org/10.12382/bgxb.2025.0879. (in Chinese)
张孟珂，陈春林，曹进，等. 钛基高熵合金杆式弹超高速撞击多层薄钢板破坏模型研究[J/OL]. 兵工学报, 2026(2026-02-10). https://doi.org/10.12382/bgxb.2025.0879. DOI：
ZHANG M N, CHEN C N, MA K N, et al. Damage models for hypervelocity impact of ti-based high-entropy alloy rod-shaped projectiles on multi-layered thin steel targets[J/OL]. Acta Armamentarii, 2026(2026-02-10). https://doi.org/10.12382/bgxb.2025.0879. (in Chinese) DOI：
摘要
为研究TiZrNbVAl高熵合金弹超高速撞击多层间隔薄钢板的弹靶破坏问题，在1.30~2.50km/s速度范围内开展实验与数值模拟研究。系统分析弹靶破坏特征及机制，以揭示等板间距条件下，撞击速度、弹体长径比、靶板厚度对剩余弹长、穿孔直径等关键毁伤特征的影响规律。基于量纲分析，构建多层穿甲剩余弹长经验模型，同时修正适用于杆式弹撞击单层薄板的穿孔直径经验模型，并将其拓展至多层薄板体系。研究结果表明：化学能释放对薄钢板中心穿孔与毁伤范围的贡献较小，薄板毁伤机制仍以动能毁伤为主导。基于Johnson-Cook本构与失效模型的数值模拟能准确再现实验现象，包括钢板的毁伤模式、穿孔直径及贯穿层数。首层钢板表现为圆形穿孔，非首层钢板呈中心穿孔伴随机分布的行星穿孔及成坑的破坏形貌，最大穿孔直径通常出现在第2层或第3层钢板。无量纲分析显示：首层钢板穿孔直径与撞击速度、长径比和靶板厚度正相关，而非首层钢板穿孔直径与靶板厚度负相关；剩余弹长与撞击速度和靶板厚度负相关，与长径比正相关，且首层钢板对弹体的侵蚀作用最为显著。所构建的剩余弹长经验模型和多层穿孔直径经验模型适用于等板间距薄钢板的多层穿甲分析，预测结果与实验或数值模拟结果的误差小于10%。
Abstract
To investigate the penetration and damage caused byTiZrNbVAlhigh-entropyalloy rod-shapedprojectiles impacting multi-layered thin steel targets at hypervelocity
experimental and numerical simulation studies were conducted at velocities ranging from 1.30to 2.50km/s.The erosion of the projectiles and the damage morphology of the thin steel targets weresystematically analyzed.Furthermore
under constant interlayer spacing conditions
the influence of impact velocity
projectile aspect ratio
and target thickness on damage characterization parameters was elucidated.Based on dimensional analysis
theempirical modelsfor the residual projectile length after perforating spacedmulti-layered targets were developed.Additionally
the empirical model for the perforation diameter of a rod-shapedprojectile in hypervelocityimpactinga thin target was revised and extended to themulti-layeredthintargets system.The results demonstrate thatchemical energy release contributes negligibly to both the central perforation and the overall damage zone. Therefore
the failure of themulti-layeredthintargetsis primarily governed by the kinetic energy of the residual projectileandfragment group.Numerical simulations utilizing the Johnson-Cook constitutive and failure models accurately reproduced the experimental observations.The simulated damage characteristics
including the damage morphology of the steel plates
hole diameter
andthenumber of penetrated layers
are in good agreement with experimental observations.The multi-layeredthinQ345steeltargets damage modes: the first layer develops regular circular perforations
while subsequent layers show central perforations accompanied by multiplerandomly distributedplanetary perforations and distinct cratering morphology
and the maximum perforation diameter consistentlyoccursin the second or third layer.The dimensionless analysis reveals that the perforation diameterof the first layer of multi-layeredthin Q345 steeltargets is positively correlated with projectilevelocity
projectile aspectratio
and target thickness. However
for subsequent layers
the dimensionless hole diameter is negatively correlated with target thickness.The dimensionless residual projectile length decreases with increasing impact velocity and target thickness
and increases with increasing projectile aspect ratio. The erosion length of the rod-shapedprojectile by the first layer of multi-layeredthinQ345steeltargets is significantly greater than that by subsequent layers.Empirical models have been established to predict theresidual projectile length andperforation diameter in multi-layered thinQ345steeltargetswith equal spacing
with errors of less than 10% compared to experimental and numerical simulation results.
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references
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