核反应堆预应力钢筋混凝土安全壳内爆炸数值分析

现代高技术战争和反恐怖战争中,核电站极有可能遭受精确制导弹药的打击。根据核反应堆预应力钢筋混凝土安全壳的结构形式,建立了安全壳有限元模型,采用土壤/混凝土材料模型,应用显式动力有限元程序LS-DYNA的流-固耦合算法,对预应力钢筋混凝土安全壳进行了内爆炸工况下的数值模拟分析,分析了在内爆炸荷载下安全壳结构的力学特性。结果表明:运用流-固耦合算法对安全壳进行内爆炸全过程三维数值模拟,能够揭示安全壳结构在内爆炸冲击波作用下的力学行为。

NUMERICAL SIMULATION FOR PRE-STRESSED CONCRETE CONTAINMENT UNDER INTERNAL EXPLOSIVE LOADING

As a nuclear power station might be attacked by pinpointed bombs in the modem war; numerical simulation for nuclear power plant owning pre-stressed reinforced concrete containment subjected to internal explosive loading is presented by employing fluid-structure coupling algorithm LS-DYNA. The material model used is Soil/Concrete constitutive model. The mechanics performance of containment under internal explosive loading is analyzed. The weak parts of the containment under internal explosive loading can clearly be shown by numerical method, and it is implied that the fluid-structure algorithm is effective to analyze mechanical performance of the containment.