尖卵形弹丸侵彻薄靶板数值模拟

摘要

The current study examined the final velocity and the failure mode of sharp-ogival-nose projectile penetration on thin target. LS-DYNA dynamic analysis software was used to simulate the process of the projectile penetration with different Nose Performance Coefficient and striking velocity on various targets with different thickness; the residual velocity,failure mode of target as well as the energy and overload curve were obtained. Results showed that the residual velocity and overload value were influenced by striking velocity; and when target thickness and Nose Performance Coefficient decreased, the failure mode of target transfers from petaleling to failure mode of plugging and ductile hole enlargement.%为研究尖卵形弹丸侵彻薄板时弹丸的剩余速度及靶板的失效形式,运用AN-SYS/LS-DYNA动力显示分析软件对不同头部形状系数和着速的弹丸侵彻不同厚度薄板的过程进行数值模拟,得到弹丸剩余速度、靶板破坏形式、能量和过载曲线.分析结果表明弹丸的剩余速度和过载受着速影响,靶板厚度和弹丸头部形状系数减小,剩余速度增大,靶板破坏形式由单一花瓣型转变为伴随冲塞和韧性穿孔的形式.