带壳装药壳体厚度对混凝土爆破毁伤效果的影响Effect of Shell Thickness of Shell Charge on Explosion and Damage Effect in Concrete
张世豪,韩晶,张欣欣,王华,牛新立
摘要(Abstract)：
根据混凝土中爆炸冲击波初始压力经验公式和C-J爆轰理论,用AUTODYN软件对带壳装药在混凝土中爆炸进行数值模拟,计算了不同壳厚下爆炸冲击波的初始压力值,得到带壳装药混凝土中爆炸冲击波初始压力的拟合公式,分析了冲击波初始压力随壳体厚度与装药半径比的变化规律。另外,从爆炸能量和爆炸冲击波的比冲量两个角度分别研究了壳体厚度对混凝土毁伤效果的影响。结果表明:当壳厚为0.5～2 mm时,爆坑体积较裸装药时增大,毁伤效果也较好;但当壳厚大于2 mm时,爆坑体积逐渐变小,毁伤效果也将变差。
关键词(KeyWords)： 爆炸力学;混凝土;爆坑体积;壳体厚度;数值模拟
基金项目(Foundation): 国家部委基础研究计划(B1020110002)
作者(Author): 张世豪,韩晶,张欣欣,王华,牛新立
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