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Erschienen in:
2009 | OriginalPaper | Buchkapitel
Numerical Analysis of Blast Loads inside Buildings
verfasst von : Xiaojing Yin, Xianglin Gu, Feng Lin, Xinxin Kuang
Erschienen in: Computational Structural Engineering
Verlag: Springer Netherlands
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The determination of pressure produced by blast loads was carried out with the aid of hydrocode LS-DYNA. The simulations of the blast wave both in air and encountering a solid target were discussed. Numerical results were compared with those obtained from the empirical expressions for different scaled distances. The material parameters of explosive and air were studied. In order to accurately evaluate the incident pressure distributions within building structures, the Arbitrary Lagrangian Eulerian (ALE) coupling was adopted to simulate the blast loading and its interaction with the structure. The blast wave was predicted by the Jones-Wilkins-Lee (JWL) equation of state for high explosives. The effect of mesh size on pressure evaluation and the appropriate boundary conditions were also studied. The results show that the material parameters and the numerical algorithm are applicable for the blast loads determination.