典型民用建筑内爆炸波传播机理

以爆炸力学为理论基础,利用有限元软件ANSYS/LS-DYNA研究了典型民用建筑内爆炸波的传播机理及内壁上超压的分布规律。按其工作原理,预先应用ANSYS/LS-DYNA软件建立标准尺寸的民用建筑模型,在建筑内选取有代表性的位置分别布置基准药量W0=1 kg单位TNT。通过ANSYS/LS-DYNA的可视化过程研究了爆炸波在建筑内的传播机理,然后采集由其爆炸而引起的内壁各结点上超压峰值数据,并且借助于绘图软件Origin制成包络图,研究了典型民用建筑内壁超压的分布规律。

The Spreading Mechanism of Explosion Waves in Typical Civil Building

Based on the theory of explosion mechanics and using the ANSYS/LS-DYNA software, the authors made a numerical analysis for the spreading mechanism of explosion waves and distribution law of overpressures on internal walls of typical civil building. According to its working principle, the ANSYS/LS-DYNA software was used to establish a model for a civil building with a standard size. The basic explosives about W= 1 kg TNT were set at typical nodes selected in the building respectively, and the spreading mechanism of the explosion waves in the building was studied by the visualized process of ANSYS/LS-DYNA software. Then, the data for peak values of overpressures on all nodes of internal walls due to explosion were collected together and the envelope diagram was made by means of the origin graph software and the distribution laws of the induced overpressures on internal walls of the typical civil building were analyzed.