弹丸形状对超高速撞击厚合金铝靶成坑影响数值模拟

张伟; 管公顺; 贾斌; 庞宝君

doi:10.11858/gywlxb.2008.04.002

弹丸形状对超高速撞击厚合金铝靶成坑影响数值模拟

doi: 10.11858/gywlxb.2008.04.002

哈尔滨工业大学高速撞击研究中心，黑龙江哈尔滨 150080

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通讯作者:
张伟

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出版历程
- 收稿日期: 2007-10-26
- 修回日期: 2008-06-21
- 发布日期: 2008-12-05

Numerical Simulation of Projectile Shape Effects on Craters in Hypervelocity Impact on Thick Alloy Aluminum Target

Hypervelocity Impact Research Center, Harbin Institute of Technology, Harbin 150080, China

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Corresponding author: ZHANG Wei

摘要

摘要: 采用AUTODYN软件进行了弹丸形状对超高速正撞击厚合金铝靶成坑过程影响的数值模拟。给出了二维及三维模拟的结果。研究了在相同质量和速度的条件下，不同形状弹丸长径比、撞击方向等对超高速撞击厚合金铝靶所产生弹坑损伤特性尺寸和成坑形状的影响，并与球形弹丸撞击所产生的坑进行了比较。结果表明：弹丸的长径比越大，弹丸的撞击成坑深度越大；非球弹丸的形状和撞击方向不同，成坑的形状和损伤的特征尺寸是不同的。
- 固体力学 /
- 超高速撞击 /
- 数值模拟 /
- 形状效应
Abstract: The numerical simulation of projectile shape effects on craters in hypervelocity impact on thick alloy aluminum target at normal angles has been carried out using the AUTODYN hydro-codes in this paper. The results of 2D and 3D simulation are given. The effect of projectile aspect ratios with different shapes and impact orientations etc. on damage characteristics sizes and shapes of craters produced by hypervelocity impact on alloy aluminum targets have been investigated with the same mass and velocity. The simulation results are compared with the crater created by spherical projectiles. It is shown that projectile has a larger aspect ratio, it has a larger crater depth; the damage characteristics sizes and shapes of craters created by non-spherical projectiles impact are different with the projectile shapes and impact orientations.
- solid mechanics /
- hypervelocity impact /
- numerical simulation /
- shape effect

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参考文献(12)

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