弹体斜侵彻混凝土过程中弹道偏转仿真分析

doi:10.16182/j.issn1004731x.joss.201708021

摘要/Abstract

摘要： 针对弹体斜侵彻半无限混凝土过程中发生弹道偏转的问题,基于刚体运动学理论和动态空腔膨胀理论,建立了卵形弹侵彻混凝土靶的运动微分方程。通过MATLAB编程和ANSYS-LYNA仿真得到弹体在给定不同侵彻初始条件下的侵彻深度和偏转角的变化规律。计算结果与试验结果吻合较好。结果表明,倾角越大,倾角对侵彻深度和偏转角的影响越明显;侵彻速度对弹道偏转的影响随着速度的增大呈现减小的趋势;卵形弹弹道偏转角小,抗弹道姿态劣化的能力强,侵彻弹道相对稳定性好。研究结果可为弹体对混凝土靶的斜侵彻弹道分析和弹体结构设计提供一定帮助。

关键词: 弹体, 斜侵彻, 混凝土靶, 数值模拟, 弹道偏转

Abstract: In order to study the trajectory deflection law of projectiles obliquely penetrating into concrete targets, based on the theory of rigid body kinematics and cavity expansion, the penetration motion differential equations of ogive-nosed projectile were established. The variation rules of trajectory offset and invasion depth were given in different initial conditions through the programming calculation and numerical simulation by MATALB and ANSYS-LYNA software. The calculation results agree well with experimental data. The results show that the influence of penetration depth and deflection angle increase with the oblique angle increasing. The influence of ballistic deflection decreases with the impact velocity increasing. The ballistic deflection of projectile with ogive-nose is smaller, its performance against the ballistic degradation is high and its penetration trajectory is stable. The research results can provide some help for the oblique penetration trajectory analysis and the design of the projectile.

Key words: projectile body, oblique penetration, concrete target, numerical simulation, ballistic deflection

中图分类号:

TP391.9

薛建锋, 沈培辉, 王晓鸣. 弹体斜侵彻混凝土过程中弹道偏转仿真分析[J]. 系统仿真学报, 2017, 29(8): 1801-1808.

Xue Jianfeng, Shen Peihui, Wang Xiaoming. Simulation Analysis on Ballistic Deflection of Projectile Obliquely Penetrating into Concrete[J]. Journal of System Simulation, 2017, 29(8): 1801-1808.

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