SPH方法在超高速撞击问题中的应用研究

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下的弹丸主体部分破碎,弹丸速度较小时,内部冲击波强度低,弹丸后表面材料并未剥落。
关键词: SPH 方法; 超高速撞击; 空间防护; 应力波; 球形弹丸; 薄板
本文引用格式: 王小峰,陶钢,闻鹏,等. SPH 方法在超高速撞击问题中的应用研究[J]. 兵器装备工程学报,2019,40
( 9) : 7 - 11,54.
Citation format: WANG Xiaofeng,TAO Gang,WEN Peng,et al. Application Research of SPH Method in Hypervelocity
Impact[J]. Journal of Ordnance Equipment Engineering,2019,40( 9) : 7 - 11,54.
寸等数据进行对比,定量研究了不同靶板厚度时弹丸内部应力波分布。结果表明,模拟结果与实验数据基本吻合。
相同弹丸速度时,靶板越薄弹丸内部冲击波越容易被卸载,速度较低的弹丸后半部分未出现明显塑性变形。弹丸内
部冲击波在弹丸后表面反射形成的拉伸波与冲击波相互作用,弹丸后半部分材料剥落,弹丸速度较大时甚至会使剩
( School of Energy and Power Engineering,Nanjing University of Science and Technology,Nanjing 210094,China)
Abstract: Based on the self-programming SPH program,this paper simulated the problem of hypervelocity impact thin plate of spherical projectile. The simulation results were compared with the experimental X photos,the axial radial dimensions of the projectile after deformation. The internal stress wave distribution of the projectile was measured quantitatively for different target thicknesses. The results show that the simulation results are basically consistent with the experimental data,indicating that it is feasible to simulate the hypervelocity impact problem involving the plastic deformation and fracture of the projectile based on the SPH method. At the same projectile speed,the thinner the target plate,the easier the internal shock wave of the projectile is unloaded,resulting in no obvious plastic deformation in the latter half of the lower velocity projectile. The interaction between the shock wave and the tensile wave formed by the internal shock wave of the projectile reflected on the surface of the projectile,which causes the material of the second half of the projectile to peel off. When the velocity of the projectile is large,the main part of the projectile will be broken. When the velocity of the projectile is small,the shock wave intensity is low and the surface material of the projectile does not peel off. Key words: SPH method; hypervelocity impact; space protection; stress wave; spherical projectile; thin plate
中图分类号: V423. 4 + 2; O385
文献标识码: A
文章编号: 2096 - 2304( 2019) 0பைடு நூலகம் - 0007 - 05
Application Research of SPH Method in Hypervelocity Impact
WANG Xiaofeng,TAO Gang,WEN Peng,REN Baoxiang,PANG Chunqiang
第 40 卷 第 9 期
兵器装备工程学报
2019 年 9 月
【装备理论与装备技术】
doi: 10. 11809 / bqzbgcxb2019. 09. 002
SPH 方法在超高速撞击问题中的应用研究
王小峰,陶 钢,闻 鹏,任保祥,庞春桥
( 南京理工大学 能源与动力工程学院,南京 210094)
摘要: 基于自编 SPH 程序,模拟了球形弹丸超高速撞击薄板。将模拟结果与实验 X 照片、弹丸变形后的轴向径向尺
收稿日期: 2019 - 02 - 21; 修回日期: 2019 - 03 - 11 作者简介: 王小峰( 1993—) ,男,博士研究生,主要从事终点弹道毁伤研究,E-mail: w_xiaofeng12@ sina. com。 通讯作者: 陶钢( 1962—) ,男,博士,研究员,主要从事弹药设计及终点弹道毁伤研究,E-mail: taogang@ njust. edu. cn。
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