摘要
建立了平头弹正侵彻Weldox 460 E钢靶的SPH模型,通过实验数据对模型进行了验证。应用验证的SPH模型模拟了2~12 mm厚单层靶的侵彻过程,建立了弹道极限速度与靶板厚度关系的经验公式;开展了平头弹正侵彻多层靶的数值模拟,分析了靶板的层数、总厚度、厚度组合对其抗侵彻性能的影响。基于单层靶弹道极限速度的经验公式,得到了预测多层靶的弹道极限速度的解析模型。将解析模型的弹道极限速度计算结果与SPH的模拟结果进行了比较,结果表明两者比较接近,相对误差基本都在10%以内。
A SPH model for blunt projectiles normally penetrating into Weldox 460 E steel targets was established.The model was verified with test data.The verified SPH model was used to simulate penetration processes of mono-layer targets with thickness of 2 to 12 mm to establish an empirical formula for the relation between ballistic limit velocitiesy and thickness.Also numerical simulations for blunt projectiles penetrating into multi-layer targets were performed to analyze effects of number of layers,total thickness and thickness combination on targets’anti-penetration performance.Based on the established empirical formula for ballistic limit velocities of monolayer targets,an analytical model for predicting ballistic limit velocities of multi-layer targets was derived.The calculated results of ballistic limit velocity with the analytical model were compared with those obtained with SPH simulations.The comparison showed that both of them are close to each other,and their relative error is basically within 10%.
作者
肖毅华
董晃晃
周建民
XIAO Yihua;DONG Huanghuang;ZHOU Jianmin(School of Mechatronics and Vehicle Engineering,East China Jiaotong University,Nanchang 330013,China)
出处
《振动与冲击》
EI
CSCD
北大核心
2018年第19期166-173,210,共9页
Journal of Vibration and Shock
基金
国家自然科学基金项目(11302077)
江西省教育厅科技项目(GJJ170370)
关键词
侵彻
SPH模拟
解析模型
penetration
SPH simulation
analytical model
