钨合金长杆弹侵彻玻璃靶板的SPH方法数值模拟  

Numerical Simulation with SPH Method for Long-rod Tungsten Alloy Projectile Penetration into Glass

作　　者：徐金中[1] 汤文辉[1] 

机构地区：[1]国防科学技术大学理学院,长沙410073

出　　处：《弹箭与制导学报》2008年第6期95-98,108,共5页Journal of Projectiles,Rockets,Missiles and Guidance

摘　　要：采用光滑粒子流体动力学(SPH)方法对钨合金长杆弹侵彻玻璃靶板作了数值模拟,给出了侵彻过程的物理图像。分析了玻璃层板间距对计算结果的影响。比较了玻璃的本构模型对数值结果的影响。通过对比实验数据,JH-2模型的计算结果明显大于实验结果,而Mohr-Coulomb盖帽模型得到的侵彻深度与实验更加吻合。进一步研究了侵彻深度对弹丸速度的依赖性,给出了钨合金长杆弹侵彻玻璃靶板的侵彻深度经验表达式。The numerical simulation of long-rod tungsten alloy projectile penetration into glass was presented using SPH method. The effects of space between glass plates on simulation results were analyzed. The effects of constitutive models of glass on simulation results were compared. The simulation results were compared with experimental data. The results show that DOP obtained by Mohr-Coulomb cap model is in accord ance with the experiment, whereas the simulative DOP obtained by JH-2 model is larger than the experimental data obviously. The change of DOP with initial velocity of projectiles was investigated,and an experiential DOP expression was presented.

关 键 词：爆炸力学 侵彻 光滑粒子流体动力学 数值模拟 

分 类 号：O385[理学—流体力学]