基于SPH的分层钢板抗半球头弹侵彻的数值模拟  

Numerical Simulation of Anti-Penetration of Laminated Steel Plate by Hemispherical-Nosed Projectile Using SPH

作　　者：强洪夫 孙新亚 王广 陈福振 石超 黄拳章 QIANG Hongfu;SUN Xinya;WANG Guang;CHEN Fuzhen;SHI Chao;HUANG Quanzhang(Rocket Army Engineering University,Xi an 710025,China)

机构地区：[1]火箭军工程大学,陕西西安710025

出　　处：《高压物理学报》2018年第5期108-116,共9页Chinese Journal of High Pressure Physics

基　　金：国家自然科学基金(51276192);国家重点基础研究发展计划(973计划)基金项目(61338)

摘　　要：随着高强度、高抗冲击特性钢结构在防护装甲、武器库防护门等军事领域得到广泛应用,钢结构的抗冲击性能成为研究的重点和热点。采用光滑粒子流体动力学方法(Smoothed Particle Hydrodynamics,SPH)对半球头弹撞击多层钢板的过程进行了数值模拟,并与实验对比,分析了半球头弹撞击后钢板的失效形式,得到了撞击点处钢板盘式隆起、蝶形破坏等过程,得到了钢板的von Mises应力分布以及半球头弹的剩余速度,验证了SPH方法在模拟钢板侵彻变形问题上的有效性。通过数值模拟,研究了钢体层数、钢体厚度对其抗侵彻特性的影响,研究表明:3mm时单层钢板比多层钢板的防护能力强,9mm时多层钢板比单层钢板的防护能力强,12mm时多层钢板和单层钢板的防护能力相当。With the wide application of high strength and high impact-resistant steel structures in armor protection of armor,arsenal protective doors and other military facilities,the impact-resistant properties of steel structures become a major focus and hot spot in defense research.In this paper,we simulated the process of hemispherical-nosed projectile penetration through a multilayer steel plate using smooth particle hydrodynamics,compared its results with those from experiment,and analyzed the failure form of the steel plate after being penetrated by hemispherical-nosed projectile,thereby obtaining the von Mises stress distribution and the residual velocity for the hemispherical-nosed projectile and verifying the effectiveness of SPH in the study of the steel plate penetration by a hemispherical-nosed projectile.We investigated the influence of the number of target plates and the thickness of the steel body on the target s penetration-resistant performance using numerical simulation.The results show that the protective strength of the single-layer steel plate is stronger than that of the multi-layer steel plate with a 3 mm thickness;that when the thickness is 9 mm,the multi-layer steel plate has a better protective capability than the single-layer steel plate;and that when the thickness is 12 mm,the multi-layer steel plate and the single-layer steel plate have similar protective strength.

关 键 词：金属靶板 靶体结构 侵彻 SPH 

分 类 号：O385[理学—流体力学]