摘要
在拟合冲击波散逸能量的分布的基础上,利用散逸能量密度、衰减系数等,给出了两个装药延时起爆时冲击载荷的计算方法。通过引入一种新型冲击因子,提出了两个装药延时起爆时水下目标的毁伤评估方法,最后利用试验数据估计出目标毁伤时冲击因子的临界值。结果表明,冲击载荷计算方法正确,冲击因子能较好的反映目标的毁伤情况。
On the basis of fitting the emission distribution of shock wave＇s energy,a method to calculate the impulsive loads of two charges＇ shock wave was given by using the emission energy density,damping coefficient,etc.Then,a damage evaluation method was proposed through introducing a new impulsive factor.According to testing data,the critical value of impulsive factor about damage of target was estimated.The result shows the method to calculate the impulsive loads is correct,and the target＇s damage state can be reflected well by the impulsive factor.
出处
《振动与冲击》
EI
CSCD
北大核心
2012年第4期92-95,127,共5页
Journal of Vibration and Shock
基金
国防预研基金项目
关键词
水下爆炸
冲击波
毁伤
冲击因子
underwater explosion
shock wave
damage
impulsive factor
