爆炸载荷对混凝土毁伤效应分析

Damage Analysis of Concrete Subject to Explosive Loading

利用LS-DYNA有限元软件模拟装药爆炸对混凝土介质毁伤效应,模拟结果表明爆炸冲击波超压是混凝土毁伤的主要因素,爆炸破片只产生局部效应,对结构的整体毁伤效应较小。爆炸气体对裂纹的产生和已有裂纹的扩展具有重要的影响。数值计算最大爆腔半径与经验预估基本一致。

Blast damage efficiency of concrete was simulated by LS-DYNA software. Blastting fragments damage was minim and pressure of shock wave was main damage factor. Gas of explosion produce has important affect on producing and expanding of crack. Empirical prediction and numerical simulaion was consistent.