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| 引用本文： | 李永池,吴立朋,罗春涛.????????????????????????[J].力学与实践,2009,31(2):22-26. |
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| 作者姓名： | 李永池 吴立朋 罗春涛 |
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| 作者单位： | 中国科学技术大学力学和机械工程系，合肥，230027 |
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| 基金项目： | 国家自然科学基金重点项目(10632080);;弹道国防科技重点实验室基金项目(51453040101zk0103)资助. |
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| 摘 要： | 对穿甲弹准定常侵彻半无限厚靶
板的问题，提出了一个考虑应变率效应的包括带有蘑菇头的未碎弹体、弹的破碎及扩孔区、
靶的破坏和扩孔区的简化侵彻模型. 通过侵彻过程中简化模型各部分的力学守恒定律，得到
了侵彻问题的简化常微分方程组，并以分析和数值计算相结合的方法分析了弹、靶强度的应
变率效应及弹破碎应变的应变率效应对侵彻效果的影响. 数值计算结果跟实验结果对比基本
一致.
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| 关 键 词： | 穿甲弹 侵彻 简化力学模型 应变率效应 |
| 收稿时间： | 2007-11-12 |
| 修稿时间： | 2008-6-10 |
A NEW THEORETICAL MODEL FOR ARMOR-PIERCING MECHANICS |
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| LI Yongchi
,
WU Lipeng
,
LUO Chuntao.A NEW THEORETICAL MODEL FOR ARMOR-PIERCING MECHANICS[J].Mechanics and Engineering,2009,31(2):22-26. |
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| Authors: | LI Yongchi WU Lipeng LUO Chuntao |
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| Institution: | 2;3;Department of Modern Mechanics;University of Science and Technology of China;Hefei 230026;China |
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| Abstract: | Penetration mechanics is important both as a science
and in practice of military engineering. For a quasi-steady penetration of long rod
projectile into semi-infinite thick target, a simplified model is
developed, where
the bullet incorporated mushroom head consists of unbroken
zone, crush zone and hole dilating zone, and the target consists of hole
dilating zone, crush zone and unbroken zone, with the strain rate effect
being
considered. A set of ODE is obtained through conservation laws of every
part. Through theoretical analysis and calculation, the influences
of the crush strain rate, crash strength of the projectile and the
strain rate effect of the crash strength of the target on penetration depth
are analyzed. The excellent agreement of the calculation results and the
experiment shows the effectiveness of the simplified model. |
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| Keywords: | armor-piercing bullet penetration simplified mechanical model strain rate effect |
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