靶板在弹丸低速冲击作用下的弹性恢复规律  

Elastic recovery in targets impacted by low-velocity projectiles

作　　者：黄广炎[1] 冯顺山[1] 吴广[1] 

机构地区：[1]北京理工大学爆炸科学与技术国家重点实验室,北京100081

出　　处：《爆炸与冲击》2011年第1期43-48,共6页Explosion and Shock Waves

基　　金：爆炸科学与技术国家重点实验室基金项目(KFJJ09-07)

摘　　要：为了对不同靶板被尖头弹丸低速侵彻条件下的弹性恢复机理进行研究,同时考虑弹丸低速冲击靶板过程中靶板整体塑性变形及弹性变形恢复,更好地反映弹丸对靶板低速侵彻过程中的变形及材料失效问题,使用非线性动力学分析软件ANSYS/LS-DYNA计算分析了弹丸以相同速度冲击不同边长、厚度靶板时,弹丸反弹速度以及靶板回弹速度随着靶板厚度的变化情况。得到了靶板厚度、靶板边长和冲击速度对靶板的弹性恢复和弹丸反弹的影响规律,为低速穿甲弹对靶板侵彻的工程与实验设计研究提供参考。By taking into account the whole plastic deformation and elastic deformation recovery of targets during the penetration of the rigid,sharp-nose projectiles,the ANSYS/LS-DYNA code was used to calculate the rebound velocities of the projectiles and targets in the cases that the projectiles at the same velocities penetrated into the targets with different widths and thicknesses.Influences of the sizes of the targets and the impact velocities of the projectiles on the elastic recovery of the targets and the rebound of the projectiles were analyzed.The researched results are helpful for the engineering and experimental designs of the projectiles with low velocities penetrating into the targets.

关 键 词：固体力学 弹性恢复 弹道冲击 反弹 

分 类 号：O385[理学—流体力学] TJ410[理学—力学]