【摘要】 依据空穴膨胀理论 ,对航空钻地炸弹垂直侵彻混凝土靶时的弹塑性应变区的应变进行了分析 ,并用边界条件 ,确定了空穴表面的法向应力与空穴表面膨胀速度之间的关系式 .并根据炸弹侵彻混凝土介质的模型及假设 ,推导出钻地炸弹垂直侵彻混凝土介质的阻力公式和侵彻深度的工程计算公式 .依此公式对国外已装备的航空钻地炸弹的侵彻威力进行了计算 ,计算结果与国外公布的试验结果符合良好更多还原

【Abstract】 According to the analysis of strain in elasto plasticity strain area when bomb prep penetrating into concrete target and by using boundary conditions, the formula is determined on the relationship between the normal stress and expansion speed of the cavity surface. Based on the resistance formula when air bombs penetrate vertically into concrete and the computing formula of penetrating depth. The penetrating power of our equipped earth penetration Bombs are calculated by the formula and the calculating results well contrast with the experimental results released abroad.更多还原