摘要
为了研究保护罩内冲击波的衰减规律,将理论分析得到的弹性柱面波衰减规律与弹塑性平面冲击波衰减规律的经验公式相结合,得到了计算保护罩内冲击波衰减规律的工程化公式。利用LS-DYNA有限元程序对保护罩内的衰减规律进行数值模拟,得到了一种铝合金和一种合金钢的衰减系数。结果表明,该公式能较好地反映保护罩内冲击波峰值压力的衰减规律。
In order to investigate of shock wave attenuation in the retainer of separation system, an engineering formula that describes the law of peak pressure attenuation was established by theoretical analysis and empirical formula. The attenuation coefficients of aluminum alloy and steel alloy were obtained with the simulated attenuation law. The formula reflects the shock Wave attenuation of peak pressure in the retainer.
出处
《弹箭与制导学报》
CSCD
北大核心
2008年第5期267-270,共4页
Journal of Projectiles,Rockets,Missiles and Guidance
关键词
冲击波
保护罩
数值模拟
衰减系数
shock wave
retainer
numerical simulation
attenuation coefficient
