中北大学学报（自然科学版）2025，Vol.46Issue(1)：35-44,10.DOI:10.62756/jnuc.issn.1673-3193.2024.01.0005
椭圆截面弹体侵彻多层混凝土靶的数值仿真
Numerical Simulation of Elliptical Cross-Section Projectile Penetrating into Multi-Layer Concrete Target
薛颖杰 1陈智刚 2杨芮 3崔晋 4康彦姝 5付建平2
作者信息
- 1. 中北大学 机电工程学院,山西 太原 030051||中北大学 地下目标毁伤技术国防重点学科实验室,山西 太原 030051
- 2. 中北大学 地下目标毁伤技术国防重点学科实验室,山西 太原 030051
- 3. 中北大学 机电工程学院,山西 太原 030051
- 4. 国营803厂,陕西 西安 710043
- 5. 晋西工业集团有限公司,山西 太原 030027
- 折叠
摘要
Abstract
In order to investigate whether the stability of the elliptical cross-section projectile penetrating a multi-layer spaced concrete target is better than that of the traditional sharp ogival-nose projectile with equal cross-section,the optimized elliptical cross-section projectile and the control projectile(sharp ogival-nose projectile)were used to penetrate a five-layer concrete target plate with an initial velocity from 700 m/s to 1 100 m/s,and the overloads and the stresses of the projectile were analyzed.Meanwhile,the tar-get attitude angle,angle of attack and the velocity change of two kinds of projectile were extracted as the judgement.The results show that the stresses of two kinds of projectile shapes do not exceed the strength limit of the projectile material under each working condition,and the projectile body does not undergo bending deformation.The penetration overload in the Z-axis direction of the sharp ogival-nose projectile is larger than that of the elliptical projectile under all working conditions,and its peak load is double that of the elliptical projectile.The velocities of two kinds of projectile shapes out of the five-layer target are simi-lar at all initial velocities.When the initial velocities of the projectile are 700 m/s and 800 m/s,the atti-tude angle and angle of attack of two kinds of projectile are similar,and the ability to penetrate the multi-layer concrete target is comparable.At initial velocities of 900 m/s,1000 m/s and 1100 m/s,the ellipti-cal cross-section projectile's attitude angle out of the target decreases by 63.59%and the angle of attack decreases by 75.29%compared with that of the circular cross-section projectile.At the velocity from 900m/s to 1100m/s,the mass erosion rate of the projectile is less than 5%,and the stability of the ellipti-cal cross-section projectile penetrating the multi-layer concrete target is better than that of the circular cross-section projectile,which verifies the better penetration performance of the elliptical cross-section pro-jectile.And the accuracy of the simulation results is verified by the calculation formula.关键词
侵彻弹药/多层混凝土靶/椭圆截面弹体/姿态角/攻角Key words
penetrating ammunition/multi-layer concrete target/elliptical cross-section projectile/atti-tude angle/attack angle分类
力学引用本文复制引用
薛颖杰,陈智刚,杨芮,崔晋,康彦姝,付建平..椭圆截面弹体侵彻多层混凝土靶的数值仿真[J].中北大学学报（自然科学版）,2025,46(1):35-44,10.
