Abstract: In order to study gas explosion destructive effect, we established an equivalent model according to the analyzed accident key characteristics. With mainly parameters calculated, high pressure gas method was established. Then, by using Shell/Euler coupling algorithm of AUTODYN, a numerical simulation of methane destructive effect was performed. According to the simulation data for one dimethylbenzene explosion accident, dimethylbenzene explosion caused a certain degree of structural damage to the box-type beam. Welding points joint the roof and side of the beam were partially ruptured whilst welding points joint the side and floor were completely broken. High-pressure product rushed out of the floor. Simulation results agreed well with accident destruction features. As analyzed, this simulation method was verified. Evidently, simulation calculation process directly described explosion dynamic evolution process. Besides, high pressure gas method reliably considered gas properties, and could accurately works out gas type, content and filling position. Obtained from details of destruction, inner ribs strengthened the box-type beam shell. As this research further determined the explosion risk of dimethylbenzene, it possible promotes norm-setting for places involving dimethylbenzene, and provides references for similar safety design
钱新明,赵焕娟,南宇翔,黄平,刘振翼. 薄壳结构内气体爆炸破坏后果数值模拟研究[J]. 振动与冲击, 2015, 34(9): 82-87.
QIAN Xin-ming, ZHAO Huan-juan, NAN Yu-xiang, HUANG Ping, LIU Zeng-yi. Simulation Analysis of Destructive Effect for Gas Explosion Happened in Thin-shell Construction. JOURNAL OF VIBRATION AND SHOCK, 2015, 34(9): 82-87.
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