基于Youngs界面技术的混凝土中爆炸三维动力计算

Three-Dimensional Dynamic Computation of Explosion in Concrete Based on Youngs' Interface Reconstruction Algorithm

为了研究混凝土中爆炸的物理机制,基于三维Youngs界面重构技术,编制了MMIC-3 D程序,模拟了半无限混凝土中爆炸空腔的形成、发展、鼓包运动规律等过程,得到了半无限混凝土中爆炸的三维数值模拟结果.研究结果表明,计算结果与实验现象和物理规律一致,本文中的计算方法和程序代码是正确的,可以为工程设计提供依据.

In order to study the physical mechanism of explosion field in concrete, a code MMIC- 3D is proposed based on the 3D Youngs＇ interface reconstruction algorithm. The formation and development process of the cavity and the law of bulge motion during the explosion in semi- infinite concrete are simulated. The three-dimensional numerical results of the explosion field in the semi-infinite concrete medium are obtained. The results showed that the computational data agree with the experimental phenomena and the physical law, which indicates that the algorithm and the hydrocode presented in this paper are correct, and can provide instruction for engineering designs.